On 2018-09-20 16:19:26 -0700, Andres Freund wrote:
> On 2018-09-20 19:03:16 -0400, Tom Lane wrote:
> > Andres Freund <and...@anarazel.de> writes:
> > > On 2018-09-20 18:38:36 -0400, Tom Lane wrote:
> > >> hmmm ... but even with variadic, C's macro facility is so weak that
> > >> I'm not sure we can reimplement these with it.  What would the
> > >> expansion look like?
> > 
> > > There's a dirty hack to count arguments in vararg macros:
> > > https://groups.google.com/d/msg/comp.std.c/d-6Mj5Lko_s/5fW1bP6T3RIJ
> > 
> > Doesn't seem to help for this case.  What we really want is to expand
> > a given pattern once for each variadic argument, and I don't see how
> > to get there from here.
> 
> Depends on whether your goal is to simplify *using* the macro, or the
> infrastructure for the macro.  Afaict it should be relatively
> straightforward to use a, possibly simplified, macro like referenced
> above to have TailMatches(...), TailMatchesCS(...), Matches(...) that
> then expand to the current *N macros.
> 
> 
> > Although maybe I'm thinking too much inside-the-box.  The expansion
> > doesn't necessarily have to be identical to the code the macros
> > generate today.  In fact, that code is kinda bulky.  I wonder if
> > we could go over to something involving a variadic function, or
> > maybe an array of string-pointer constants?
> 
> Yea, that might be a way to simplify both the macros and the use of the
> macros.  Assuming we have something like PP_NARG, ISTM it should be
> relatively straightforward to define something like
> 
> #define Matches(...) CheckMatchesFor(PP_NARG(__VA_ARGS__), __VA_ARGS__)
> 
> and then have a CheckMatchesFor() first check previous_words_count, and
> then just have a simple for loop through previous_words[] - afaict the
> number of arguments ought to suffice to make that possible?

Here's a very quick-and-dirty implementation of this approach. Some very
very brief testing seems to indicate it works, although I'm sure not
perfectly.

The current duplication of the new functions doing the actual checking
(like CheckMatchesFor(), CheckTailMatchesFor()) would probably need to
be reduced. But I don't want to invest actual time before we decide that
this could be something we'd actually want to pursue.

Greetings,

Andres Freund
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index 47a1a19688f..21a4a807d93 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -1220,6 +1220,110 @@ ends_with(const char *s, char c)
 	return (length > 0 && s[length - 1] == c);
 }
 
+static bool
+CheckTailMatchesFor(int previous_words_count, char **previous_words, int narg, ...)
+{
+	va_list		args;
+
+	if (previous_words_count < narg)
+		return false;
+
+	va_start(args, narg);
+
+	for (int argno = 0; argno < narg; argno++)
+	{
+		const char *arg = va_arg(args, const char *);
+
+		if (!word_matches(arg, previous_words[narg - argno - 1]))
+		{
+			va_end(args);
+			return false;
+		}
+	}
+
+	va_end(args);
+
+	return true;
+}
+
+static bool
+CheckMatchesFor(int previous_words_count, char **previous_words, int narg, ...)
+{
+	va_list		args;
+
+	if (previous_words_count != narg)
+		return false;
+
+	va_start(args, narg);
+
+	for (int argno = 0; argno < narg; argno++)
+	{
+		const char *arg = va_arg(args, const char *);
+
+		if (!word_matches(arg, previous_words[narg - argno - 1]))
+		{
+			va_end(args);
+			return false;
+		}
+	}
+
+	va_end(args);
+
+	return true;
+}
+
+static bool
+CheckTailMatchesCSFor(int previous_words_count, char **previous_words, int narg, ...)
+{
+	va_list		args;
+
+	if (previous_words_count < narg)
+		return false;
+
+	va_start(args, narg);
+
+	for (int argno = 0; argno < narg; argno++)
+	{
+		const char *arg = va_arg(args, const char *);
+
+		if (!word_matches_cs(arg, previous_words[narg - argno - 1]))
+		{
+			va_end(args);
+			return false;
+		}
+	}
+
+	va_end(args);
+
+	return true;
+}
+
+static bool
+CheckHeadMatchesFor(int previous_words_count, char **previous_words, int narg, ...)
+{
+	va_list		args;
+
+	if (previous_words_count < narg)
+		return false;
+
+	va_start(args, narg);
+
+	for (int argno = 0; argno < narg; argno++)
+	{
+		const char *arg = va_arg(args, const char *);
+
+		if (!word_matches(arg, previous_words[previous_words_count - (argno + 1)]))
+		{
+			va_end(args);
+			return false;
+		}
+	}
+
+	va_end(args);
+
+	return true;
+}
+
 /*
  * The completion function.
  *
@@ -1260,149 +1364,23 @@ psql_completion(const char *text, int start, int end)
 #define prev8_wd  (previous_words[7])
 #define prev9_wd  (previous_words[8])
 
+		/* Macros for matching the last N words before point, case-insensitively. */
+#define TailMatches(...) CheckTailMatchesFor(previous_words_count, previous_words, PP_NARG(__VA_ARGS__), __VA_ARGS__)
+
 	/* Macros for matching the last N words before point, case-insensitively. */
-#define TailMatches1(p1) \
-	(previous_words_count >= 1 && \
-	 word_matches(p1, prev_wd))
-
-#define TailMatches2(p2, p1) \
-	(previous_words_count >= 2 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd))
-
-#define TailMatches3(p3, p2, p1) \
-	(previous_words_count >= 3 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd) && \
-	 word_matches(p3, prev3_wd))
-
-#define TailMatches4(p4, p3, p2, p1) \
-	(previous_words_count >= 4 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd) && \
-	 word_matches(p3, prev3_wd) && \
-	 word_matches(p4, prev4_wd))
-
-#define TailMatches5(p5, p4, p3, p2, p1) \
-	(previous_words_count >= 5 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd) && \
-	 word_matches(p3, prev3_wd) && \
-	 word_matches(p4, prev4_wd) && \
-	 word_matches(p5, prev5_wd))
-
-#define TailMatches6(p6, p5, p4, p3, p2, p1) \
-	(previous_words_count >= 6 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd) && \
-	 word_matches(p3, prev3_wd) && \
-	 word_matches(p4, prev4_wd) && \
-	 word_matches(p5, prev5_wd) && \
-	 word_matches(p6, prev6_wd))
-
-#define TailMatches7(p7, p6, p5, p4, p3, p2, p1) \
-	(previous_words_count >= 7 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd) && \
-	 word_matches(p3, prev3_wd) && \
-	 word_matches(p4, prev4_wd) && \
-	 word_matches(p5, prev5_wd) && \
-	 word_matches(p6, prev6_wd) && \
-	 word_matches(p7, prev7_wd))
-
-#define TailMatches8(p8, p7, p6, p5, p4, p3, p2, p1) \
-	(previous_words_count >= 8 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd) && \
-	 word_matches(p3, prev3_wd) && \
-	 word_matches(p4, prev4_wd) && \
-	 word_matches(p5, prev5_wd) && \
-	 word_matches(p6, prev6_wd) && \
-	 word_matches(p7, prev7_wd) && \
-	 word_matches(p8, prev8_wd))
-
-#define TailMatches9(p9, p8, p7, p6, p5, p4, p3, p2, p1) \
-	(previous_words_count >= 9 && \
-	 word_matches(p1, prev_wd) && \
-	 word_matches(p2, prev2_wd) && \
-	 word_matches(p3, prev3_wd) && \
-	 word_matches(p4, prev4_wd) && \
-	 word_matches(p5, prev5_wd) && \
-	 word_matches(p6, prev6_wd) && \
-	 word_matches(p7, prev7_wd) && \
-	 word_matches(p8, prev8_wd) && \
-	 word_matches(p9, prev9_wd))
-
-	/* Macros for matching the last N words before point, case-sensitively. */
-#define TailMatchesCS1(p1) \
-	(previous_words_count >= 1 && \
-	 word_matches_cs(p1, prev_wd))
-#define TailMatchesCS2(p2, p1) \
-	(previous_words_count >= 2 && \
-	 word_matches_cs(p1, prev_wd) && \
-	 word_matches_cs(p2, prev2_wd))
-#define TailMatchesCS3(p3, p2, p1) \
-	(previous_words_count >= 3 && \
-	 word_matches_cs(p1, prev_wd) && \
-	 word_matches_cs(p2, prev2_wd) && \
-	 word_matches_cs(p3, prev3_wd))
-#define TailMatchesCS4(p4, p3, p2, p1) \
-	(previous_words_count >= 4 && \
-	 word_matches_cs(p1, prev_wd) && \
-	 word_matches_cs(p2, prev2_wd) && \
-	 word_matches_cs(p3, prev3_wd) && \
-	 word_matches_cs(p4, prev4_wd))
+#define TailMatchesCS(...) CheckTailMatchesCSFor(previous_words_count, previous_words, PP_NARG(__VA_ARGS__), __VA_ARGS__)
 
 	/*
 	 * Macros for matching N words beginning at the start of the line,
 	 * case-insensitively.
 	 */
-#define Matches1(p1) \
-	(previous_words_count == 1 && \
-	 TailMatches1(p1))
-#define Matches2(p1, p2) \
-	(previous_words_count == 2 && \
-	 TailMatches2(p1, p2))
-#define Matches3(p1, p2, p3) \
-	(previous_words_count == 3 && \
-	 TailMatches3(p1, p2, p3))
-#define Matches4(p1, p2, p3, p4) \
-	(previous_words_count == 4 && \
-	 TailMatches4(p1, p2, p3, p4))
-#define Matches5(p1, p2, p3, p4, p5) \
-	(previous_words_count == 5 && \
-	 TailMatches5(p1, p2, p3, p4, p5))
-#define Matches6(p1, p2, p3, p4, p5, p6) \
-	(previous_words_count == 6 && \
-	 TailMatches6(p1, p2, p3, p4, p5, p6))
-#define Matches7(p1, p2, p3, p4, p5, p6, p7) \
-	(previous_words_count == 7 && \
-	 TailMatches7(p1, p2, p3, p4, p5, p6, p7))
-#define Matches8(p1, p2, p3, p4, p5, p6, p7, p8) \
-	(previous_words_count == 8 && \
-	 TailMatches8(p1, p2, p3, p4, p5, p6, p7, p8))
-#define Matches9(p1, p2, p3, p4, p5, p6, p7, p8, p9) \
-	(previous_words_count == 9 && \
-	 TailMatches9(p1, p2, p3, p4, p5, p6, p7, p8, p9))
+#define Matches(...) CheckMatchesFor(previous_words_count, previous_words, PP_NARG(__VA_ARGS__), __VA_ARGS__)
 
 	/*
 	 * Macros for matching N words at the start of the line, regardless of
 	 * what is after them, case-insensitively.
 	 */
-#define HeadMatches1(p1) \
-	(previous_words_count >= 1 && \
-	 word_matches(p1, previous_words[previous_words_count - 1]))
-
-#define HeadMatches2(p1, p2) \
-	(previous_words_count >= 2 && \
-	 word_matches(p1, previous_words[previous_words_count - 1]) && \
-	 word_matches(p2, previous_words[previous_words_count - 2]))
-
-#define HeadMatches3(p1, p2, p3) \
-	(previous_words_count >= 3 && \
-	 word_matches(p1, previous_words[previous_words_count - 1]) && \
-	 word_matches(p2, previous_words[previous_words_count - 2]) && \
-	 word_matches(p3, previous_words[previous_words_count - 3]))
+#define HeadMatches(...) CheckHeadMatchesFor(previous_words_count, previous_words, PP_NARG(__VA_ARGS__), __VA_ARGS__)
 
 	/* Known command-starting keywords. */
 	static const char *const sql_commands[] = {
@@ -1492,38 +1470,38 @@ psql_completion(const char *text, int start, int end)
 
 /* CREATE */
 	/* complete with something you can create */
-	else if (TailMatches1("CREATE"))
+	else if (TailMatches("CREATE"))
 		matches = completion_matches(text, create_command_generator);
 
 /* DROP, but not DROP embedded in other commands */
 	/* complete with something you can drop */
-	else if (Matches1("DROP"))
+	else if (Matches("DROP"))
 		matches = completion_matches(text, drop_command_generator);
 
 /* ALTER */
 
 	/* ALTER TABLE */
-	else if (Matches2("ALTER", "TABLE"))
+	else if (Matches("ALTER", "TABLE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables,
 								   "UNION SELECT 'ALL IN TABLESPACE'");
 
 	/* ALTER something */
-	else if (Matches1("ALTER"))
+	else if (Matches("ALTER"))
 		matches = completion_matches(text, alter_command_generator);
 	/* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx */
-	else if (TailMatches4("ALL", "IN", "TABLESPACE", MatchAny))
+	else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny))
 		COMPLETE_WITH_LIST2("SET TABLESPACE", "OWNED BY");
 	/* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx OWNED BY */
-	else if (TailMatches6("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY"))
+	else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
 	/* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx OWNED BY xxx */
-	else if (TailMatches7("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY", MatchAny))
+	else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY", MatchAny))
 		COMPLETE_WITH_CONST("SET TABLESPACE");
 	/* ALTER AGGREGATE,FUNCTION,PROCEDURE,ROUTINE <name> */
-	else if (Matches3("ALTER", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
+	else if (Matches("ALTER", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
 		COMPLETE_WITH_CONST("(");
 	/* ALTER AGGREGATE,FUNCTION,PROCEDURE,ROUTINE <name> (...) */
-	else if (Matches4("ALTER", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny))
+	else if (Matches("ALTER", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny))
 	{
 		if (ends_with(prev_wd, ')'))
 			COMPLETE_WITH_LIST3("OWNER TO", "RENAME TO", "SET SCHEMA");
@@ -1531,107 +1509,107 @@ psql_completion(const char *text, int start, int end)
 			COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
 	}
 	/* ALTER PUBLICATION <name> */
-	else if (Matches3("ALTER", "PUBLICATION", MatchAny))
+	else if (Matches("ALTER", "PUBLICATION", MatchAny))
 		COMPLETE_WITH_LIST5("ADD TABLE", "DROP TABLE", "OWNER TO", "RENAME TO", "SET");
 	/* ALTER PUBLICATION <name> SET */
-	else if (Matches4("ALTER", "PUBLICATION", MatchAny, "SET"))
+	else if (Matches("ALTER", "PUBLICATION", MatchAny, "SET"))
 		COMPLETE_WITH_LIST2("(", "TABLE");
 	/* ALTER PUBLICATION <name> SET ( */
-	else if (HeadMatches3("ALTER", "PUBLICATION", MatchAny) && TailMatches2("SET", "("))
+	else if (HeadMatches("ALTER", "PUBLICATION", MatchAny) && TailMatches("SET", "("))
 		COMPLETE_WITH_CONST("publish");
 	/* ALTER SUBSCRIPTION <name> */
-	else if (Matches3("ALTER", "SUBSCRIPTION", MatchAny))
+	else if (Matches("ALTER", "SUBSCRIPTION", MatchAny))
 		COMPLETE_WITH_LIST7("CONNECTION", "ENABLE", "DISABLE", "OWNER TO",
 							"RENAME TO", "REFRESH PUBLICATION", "SET");
 	/* ALTER SUBSCRIPTION <name> REFRESH PUBLICATION */
-	else if (HeadMatches3("ALTER", "SUBSCRIPTION", MatchAny) &&
-			 TailMatches2("REFRESH", "PUBLICATION"))
+	else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
+			 TailMatches("REFRESH", "PUBLICATION"))
 		COMPLETE_WITH_CONST("WITH (");
 	/* ALTER SUBSCRIPTION <name> REFRESH PUBLICATION WITH ( */
-	else if (HeadMatches3("ALTER", "SUBSCRIPTION", MatchAny) &&
-			 TailMatches4("REFRESH", "PUBLICATION", "WITH", "("))
+	else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
+			 TailMatches("REFRESH", "PUBLICATION", "WITH", "("))
 		COMPLETE_WITH_CONST("copy_data");
 	/* ALTER SUBSCRIPTION <name> SET */
-	else if (Matches4("ALTER", "SUBSCRIPTION", MatchAny, "SET"))
+	else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, "SET"))
 		COMPLETE_WITH_LIST2("(", "PUBLICATION");
 	/* ALTER SUBSCRIPTION <name> SET ( */
-	else if (HeadMatches3("ALTER", "SUBSCRIPTION", MatchAny) && TailMatches2("SET", "("))
+	else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) && TailMatches("SET", "("))
 		COMPLETE_WITH_LIST2("slot_name", "synchronous_commit");
 	/* ALTER SUBSCRIPTION <name> SET PUBLICATION */
-	else if (HeadMatches3("ALTER", "SUBSCRIPTION", MatchAny) && TailMatches2("SET", "PUBLICATION"))
+	else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) && TailMatches("SET", "PUBLICATION"))
 	{
 		/* complete with nothing here as this refers to remote publications */
 	}
 	/* ALTER SUBSCRIPTION <name> SET PUBLICATION <name> */
-	else if (HeadMatches3("ALTER", "SUBSCRIPTION", MatchAny) &&
-			 TailMatches3("SET", "PUBLICATION", MatchAny))
+	else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
+			 TailMatches("SET", "PUBLICATION", MatchAny))
 		COMPLETE_WITH_CONST("WITH (");
 	/* ALTER SUBSCRIPTION <name> SET PUBLICATION <name> WITH ( */
-	else if (HeadMatches3("ALTER", "SUBSCRIPTION", MatchAny) &&
-			 TailMatches5("SET", "PUBLICATION", MatchAny, "WITH", "("))
+	else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
+			 TailMatches("SET", "PUBLICATION", MatchAny, "WITH", "("))
 		COMPLETE_WITH_LIST2("copy_data", "refresh");
 	/* ALTER SCHEMA <name> */
-	else if (Matches3("ALTER", "SCHEMA", MatchAny))
+	else if (Matches("ALTER", "SCHEMA", MatchAny))
 		COMPLETE_WITH_LIST2("OWNER TO", "RENAME TO");
 
 	/* ALTER COLLATION <name> */
-	else if (Matches3("ALTER", "COLLATION", MatchAny))
+	else if (Matches("ALTER", "COLLATION", MatchAny))
 		COMPLETE_WITH_LIST3("OWNER TO", "RENAME TO", "SET SCHEMA");
 
 	/* ALTER CONVERSION <name> */
-	else if (Matches3("ALTER", "CONVERSION", MatchAny))
+	else if (Matches("ALTER", "CONVERSION", MatchAny))
 		COMPLETE_WITH_LIST3("OWNER TO", "RENAME TO", "SET SCHEMA");
 
 	/* ALTER DATABASE <name> */
-	else if (Matches3("ALTER", "DATABASE", MatchAny))
+	else if (Matches("ALTER", "DATABASE", MatchAny))
 		COMPLETE_WITH_LIST7("RESET", "SET", "OWNER TO", "RENAME TO",
 							"IS_TEMPLATE", "ALLOW_CONNECTIONS",
 							"CONNECTION LIMIT");
 
 	/* ALTER DATABASE <name> SET TABLESPACE */
-	else if (Matches5("ALTER", "DATABASE", MatchAny, "SET", "TABLESPACE"))
+	else if (Matches("ALTER", "DATABASE", MatchAny, "SET", "TABLESPACE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
 
 	/* ALTER EVENT TRIGGER */
-	else if (Matches3("ALTER", "EVENT", "TRIGGER"))
+	else if (Matches("ALTER", "EVENT", "TRIGGER"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
 
 	/* ALTER EVENT TRIGGER <name> */
-	else if (Matches4("ALTER", "EVENT", "TRIGGER", MatchAny))
+	else if (Matches("ALTER", "EVENT", "TRIGGER", MatchAny))
 		COMPLETE_WITH_LIST4("DISABLE", "ENABLE", "OWNER TO", "RENAME TO");
 
 	/* ALTER EVENT TRIGGER <name> ENABLE */
-	else if (Matches5("ALTER", "EVENT", "TRIGGER", MatchAny, "ENABLE"))
+	else if (Matches("ALTER", "EVENT", "TRIGGER", MatchAny, "ENABLE"))
 		COMPLETE_WITH_LIST2("REPLICA", "ALWAYS");
 
 	/* ALTER EXTENSION <name> */
-	else if (Matches3("ALTER", "EXTENSION", MatchAny))
+	else if (Matches("ALTER", "EXTENSION", MatchAny))
 		COMPLETE_WITH_LIST4("ADD", "DROP", "UPDATE", "SET SCHEMA");
 
 	/* ALTER EXTENSION <name> UPDATE */
-	else if (Matches4("ALTER", "EXTENSION", MatchAny, "UPDATE"))
+	else if (Matches("ALTER", "EXTENSION", MatchAny, "UPDATE"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions_with_TO);
 	}
 
 	/* ALTER EXTENSION <name> UPDATE TO */
-	else if (Matches5("ALTER", "EXTENSION", MatchAny, "UPDATE", "TO"))
+	else if (Matches("ALTER", "EXTENSION", MatchAny, "UPDATE", "TO"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions);
 	}
 
 	/* ALTER FOREIGN */
-	else if (Matches2("ALTER", "FOREIGN"))
+	else if (Matches("ALTER", "FOREIGN"))
 		COMPLETE_WITH_LIST2("DATA WRAPPER", "TABLE");
 
 	/* ALTER FOREIGN DATA WRAPPER <name> */
-	else if (Matches5("ALTER", "FOREIGN", "DATA", "WRAPPER", MatchAny))
+	else if (Matches("ALTER", "FOREIGN", "DATA", "WRAPPER", MatchAny))
 		COMPLETE_WITH_LIST5("HANDLER", "VALIDATOR", "OPTIONS", "OWNER TO", "RENAME TO");
 
 	/* ALTER FOREIGN TABLE <name> */
-	else if (Matches4("ALTER", "FOREIGN", "TABLE", MatchAny))
+	else if (Matches("ALTER", "FOREIGN", "TABLE", MatchAny))
 	{
 		static const char *const list_ALTER_FOREIGN_TABLE[] =
 		{"ADD", "ALTER", "DISABLE TRIGGER", "DROP", "ENABLE", "INHERIT",
@@ -1642,35 +1620,35 @@ psql_completion(const char *text, int start, int end)
 	}
 
 	/* ALTER INDEX */
-	else if (Matches2("ALTER", "INDEX"))
+	else if (Matches("ALTER", "INDEX"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
 								   "UNION SELECT 'ALL IN TABLESPACE'");
 	/* ALTER INDEX <name> */
-	else if (Matches3("ALTER", "INDEX", MatchAny))
+	else if (Matches("ALTER", "INDEX", MatchAny))
 		COMPLETE_WITH_LIST6("ALTER COLUMN", "OWNER TO", "RENAME TO", "SET",
 							"RESET", "ATTACH PARTITION");
-	else if (Matches4("ALTER", "INDEX", MatchAny, "ATTACH"))
+	else if (Matches("ALTER", "INDEX", MatchAny, "ATTACH"))
 		COMPLETE_WITH_CONST("PARTITION");
-	else if (Matches5("ALTER", "INDEX", MatchAny, "ATTACH", "PARTITION"))
+	else if (Matches("ALTER", "INDEX", MatchAny, "ATTACH", "PARTITION"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
 	/* ALTER INDEX <name> ALTER COLUMN <colnum> */
-	else if (Matches6("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny))
+	else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny))
 		COMPLETE_WITH_CONST("SET STATISTICS");
 	/* ALTER INDEX <name> SET */
-	else if (Matches4("ALTER", "INDEX", MatchAny, "SET"))
+	else if (Matches("ALTER", "INDEX", MatchAny, "SET"))
 		COMPLETE_WITH_LIST2("(", "TABLESPACE");
 	/* ALTER INDEX <name> RESET */
-	else if (Matches4("ALTER", "INDEX", MatchAny, "RESET"))
+	else if (Matches("ALTER", "INDEX", MatchAny, "RESET"))
 		COMPLETE_WITH_CONST("(");
 	/* ALTER INDEX <foo> SET|RESET ( */
-	else if (Matches5("ALTER", "INDEX", MatchAny, "RESET", "("))
+	else if (Matches("ALTER", "INDEX", MatchAny, "RESET", "("))
 		COMPLETE_WITH_LIST8("fillfactor", "recheck_on_update",
 							"vacuum_cleanup_index_scale_factor",	/* BTREE */
 							"fastupdate", "gin_pending_list_limit", /* GIN */
 							"buffering",	/* GiST */
 							"pages_per_range", "autosummarize"	/* BRIN */
 			);
-	else if (Matches5("ALTER", "INDEX", MatchAny, "SET", "("))
+	else if (Matches("ALTER", "INDEX", MatchAny, "SET", "("))
 		COMPLETE_WITH_LIST8("fillfactor =", "recheck_on_update =",
 							"vacuum_cleanup_index_scale_factor =",	/* BTREE */
 							"fastupdate =", "gin_pending_list_limit =", /* GIN */
@@ -1679,21 +1657,21 @@ psql_completion(const char *text, int start, int end)
 			);
 
 	/* ALTER LANGUAGE <name> */
-	else if (Matches3("ALTER", "LANGUAGE", MatchAny))
+	else if (Matches("ALTER", "LANGUAGE", MatchAny))
 		COMPLETE_WITH_LIST2("OWNER_TO", "RENAME TO");
 
 	/* ALTER LARGE OBJECT <oid> */
-	else if (Matches4("ALTER", "LARGE", "OBJECT", MatchAny))
+	else if (Matches("ALTER", "LARGE", "OBJECT", MatchAny))
 		COMPLETE_WITH_CONST("OWNER TO");
 
 	/* ALTER MATERIALIZED VIEW */
-	else if (Matches3("ALTER", "MATERIALIZED", "VIEW"))
+	else if (Matches("ALTER", "MATERIALIZED", "VIEW"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews,
 								   "UNION SELECT 'ALL IN TABLESPACE'");
 
 	/* ALTER USER,ROLE <name> */
-	else if (Matches3("ALTER", "USER|ROLE", MatchAny) &&
-			 !TailMatches2("USER", "MAPPING"))
+	else if (Matches("ALTER", "USER|ROLE", MatchAny) &&
+			 !TailMatches("USER", "MAPPING"))
 	{
 		static const char *const list_ALTERUSER[] =
 		{"BYPASSRLS", "CONNECTION LIMIT", "CREATEDB", "CREATEROLE",
@@ -1707,7 +1685,7 @@ psql_completion(const char *text, int start, int end)
 	}
 
 	/* ALTER USER,ROLE <name> WITH */
-	else if (Matches4("ALTER", "USER|ROLE", MatchAny, "WITH"))
+	else if (Matches("ALTER", "USER|ROLE", MatchAny, "WITH"))
 	{
 		/* Similar to the above, but don't complete "WITH" again. */
 		static const char *const list_ALTERUSER_WITH[] =
@@ -1722,58 +1700,58 @@ psql_completion(const char *text, int start, int end)
 	}
 
 	/* ALTER DEFAULT PRIVILEGES */
-	else if (Matches3("ALTER", "DEFAULT", "PRIVILEGES"))
+	else if (Matches("ALTER", "DEFAULT", "PRIVILEGES"))
 		COMPLETE_WITH_LIST2("FOR ROLE", "IN SCHEMA");
 	/* ALTER DEFAULT PRIVILEGES FOR */
-	else if (Matches4("ALTER", "DEFAULT", "PRIVILEGES", "FOR"))
+	else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR"))
 		COMPLETE_WITH_CONST("ROLE");
 	/* ALTER DEFAULT PRIVILEGES IN */
-	else if (Matches4("ALTER", "DEFAULT", "PRIVILEGES", "IN"))
+	else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN"))
 		COMPLETE_WITH_CONST("SCHEMA");
 	/* ALTER DEFAULT PRIVILEGES FOR ROLE|USER ... */
-	else if (Matches6("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
+	else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
 					  MatchAny))
 		COMPLETE_WITH_LIST3("GRANT", "REVOKE", "IN SCHEMA");
 	/* ALTER DEFAULT PRIVILEGES IN SCHEMA ... */
-	else if (Matches6("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
+	else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
 					  MatchAny))
 		COMPLETE_WITH_LIST3("GRANT", "REVOKE", "FOR ROLE");
 	/* ALTER DEFAULT PRIVILEGES IN SCHEMA ... FOR */
-	else if (Matches7("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
+	else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
 					  MatchAny, "FOR"))
 		COMPLETE_WITH_CONST("ROLE");
 	/* ALTER DEFAULT PRIVILEGES FOR ROLE|USER ... IN SCHEMA ... */
 	/* ALTER DEFAULT PRIVILEGES IN SCHEMA ... FOR ROLE|USER ... */
-	else if (Matches9("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
+	else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
 					  MatchAny, "IN", "SCHEMA", MatchAny) ||
-			 Matches9("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
+			 Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
 					  MatchAny, "FOR", "ROLE|USER", MatchAny))
 		COMPLETE_WITH_LIST2("GRANT", "REVOKE");
 	/* ALTER DOMAIN <name> */
-	else if (Matches3("ALTER", "DOMAIN", MatchAny))
+	else if (Matches("ALTER", "DOMAIN", MatchAny))
 		COMPLETE_WITH_LIST6("ADD", "DROP", "OWNER TO", "RENAME", "SET",
 							"VALIDATE CONSTRAINT");
 	/* ALTER DOMAIN <sth> DROP */
-	else if (Matches4("ALTER", "DOMAIN", MatchAny, "DROP"))
+	else if (Matches("ALTER", "DOMAIN", MatchAny, "DROP"))
 		COMPLETE_WITH_LIST3("CONSTRAINT", "DEFAULT", "NOT NULL");
 	/* ALTER DOMAIN <sth> DROP|RENAME|VALIDATE CONSTRAINT */
-	else if (Matches5("ALTER", "DOMAIN", MatchAny, "DROP|RENAME|VALIDATE", "CONSTRAINT"))
+	else if (Matches("ALTER", "DOMAIN", MatchAny, "DROP|RENAME|VALIDATE", "CONSTRAINT"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_constraint_of_type);
 	}
 	/* ALTER DOMAIN <sth> RENAME */
-	else if (Matches4("ALTER", "DOMAIN", MatchAny, "RENAME"))
+	else if (Matches("ALTER", "DOMAIN", MatchAny, "RENAME"))
 		COMPLETE_WITH_LIST2("CONSTRAINT", "TO");
 	/* ALTER DOMAIN <sth> RENAME CONSTRAINT <sth> */
-	else if (Matches6("ALTER", "DOMAIN", MatchAny, "RENAME", "CONSTRAINT", MatchAny))
+	else if (Matches("ALTER", "DOMAIN", MatchAny, "RENAME", "CONSTRAINT", MatchAny))
 		COMPLETE_WITH_CONST("TO");
 
 	/* ALTER DOMAIN <sth> SET */
-	else if (Matches4("ALTER", "DOMAIN", MatchAny, "SET"))
+	else if (Matches("ALTER", "DOMAIN", MatchAny, "SET"))
 		COMPLETE_WITH_LIST3("DEFAULT", "NOT NULL", "SCHEMA");
 	/* ALTER SEQUENCE <name> */
-	else if (Matches3("ALTER", "SEQUENCE", MatchAny))
+	else if (Matches("ALTER", "SEQUENCE", MatchAny))
 	{
 		static const char *const list_ALTERSEQUENCE[] =
 		{"INCREMENT", "MINVALUE", "MAXVALUE", "RESTART", "NO", "CACHE", "CYCLE",
@@ -1782,79 +1760,79 @@ psql_completion(const char *text, int start, int end)
 		COMPLETE_WITH_LIST(list_ALTERSEQUENCE);
 	}
 	/* ALTER SEQUENCE <name> NO */
-	else if (Matches4("ALTER", "SEQUENCE", MatchAny, "NO"))
+	else if (Matches("ALTER", "SEQUENCE", MatchAny, "NO"))
 		COMPLETE_WITH_LIST3("MINVALUE", "MAXVALUE", "CYCLE");
 	/* ALTER SERVER <name> */
-	else if (Matches3("ALTER", "SERVER", MatchAny))
+	else if (Matches("ALTER", "SERVER", MatchAny))
 		COMPLETE_WITH_LIST4("VERSION", "OPTIONS", "OWNER TO", "RENAME TO");
 	/* ALTER SERVER <name> VERSION <version> */
-	else if (Matches5("ALTER", "SERVER", MatchAny, "VERSION", MatchAny))
+	else if (Matches("ALTER", "SERVER", MatchAny, "VERSION", MatchAny))
 		COMPLETE_WITH_CONST("OPTIONS");
 	/* ALTER SYSTEM SET, RESET, RESET ALL */
-	else if (Matches2("ALTER", "SYSTEM"))
+	else if (Matches("ALTER", "SYSTEM"))
 		COMPLETE_WITH_LIST2("SET", "RESET");
-	else if (Matches3("ALTER", "SYSTEM", "SET|RESET"))
+	else if (Matches("ALTER", "SYSTEM", "SET|RESET"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_alter_system_set_vars);
-	else if (Matches4("ALTER", "SYSTEM", "SET", MatchAny))
+	else if (Matches("ALTER", "SYSTEM", "SET", MatchAny))
 		COMPLETE_WITH_CONST("TO");
 	/* ALTER VIEW <name> */
-	else if (Matches3("ALTER", "VIEW", MatchAny))
+	else if (Matches("ALTER", "VIEW", MatchAny))
 		COMPLETE_WITH_LIST4("ALTER COLUMN", "OWNER TO", "RENAME TO",
 							"SET SCHEMA");
 	/* ALTER MATERIALIZED VIEW <name> */
-	else if (Matches4("ALTER", "MATERIALIZED", "VIEW", MatchAny))
+	else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny))
 		COMPLETE_WITH_LIST4("ALTER COLUMN", "OWNER TO", "RENAME TO",
 							"SET SCHEMA");
 
 	/* ALTER POLICY <name> */
-	else if (Matches2("ALTER", "POLICY"))
+	else if (Matches("ALTER", "POLICY"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_policies);
 	/* ALTER POLICY <name> ON */
-	else if (Matches3("ALTER", "POLICY", MatchAny))
+	else if (Matches("ALTER", "POLICY", MatchAny))
 		COMPLETE_WITH_CONST("ON");
 	/* ALTER POLICY <name> ON <table> */
-	else if (Matches4("ALTER", "POLICY", MatchAny, "ON"))
+	else if (Matches("ALTER", "POLICY", MatchAny, "ON"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_policy);
 	}
 	/* ALTER POLICY <name> ON <table> - show options */
-	else if (Matches5("ALTER", "POLICY", MatchAny, "ON", MatchAny))
+	else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny))
 		COMPLETE_WITH_LIST4("RENAME TO", "TO", "USING (", "WITH CHECK (");
 	/* ALTER POLICY <name> ON <table> TO <role> */
-	else if (Matches6("ALTER", "POLICY", MatchAny, "ON", MatchAny, "TO"))
+	else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "TO"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
 	/* ALTER POLICY <name> ON <table> USING ( */
-	else if (Matches6("ALTER", "POLICY", MatchAny, "ON", MatchAny, "USING"))
+	else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "USING"))
 		COMPLETE_WITH_CONST("(");
 	/* ALTER POLICY <name> ON <table> WITH CHECK ( */
-	else if (Matches7("ALTER", "POLICY", MatchAny, "ON", MatchAny, "WITH", "CHECK"))
+	else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "WITH", "CHECK"))
 		COMPLETE_WITH_CONST("(");
 
 	/* ALTER RULE <name>, add ON */
-	else if (Matches3("ALTER", "RULE", MatchAny))
+	else if (Matches("ALTER", "RULE", MatchAny))
 		COMPLETE_WITH_CONST("ON");
 
 	/* If we have ALTER RULE <name> ON, then add the correct tablename */
-	else if (Matches4("ALTER", "RULE", MatchAny, "ON"))
+	else if (Matches("ALTER", "RULE", MatchAny, "ON"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_rule);
 	}
 
 	/* ALTER RULE <name> ON <name> */
-	else if (Matches5("ALTER", "RULE", MatchAny, "ON", MatchAny))
+	else if (Matches("ALTER", "RULE", MatchAny, "ON", MatchAny))
 		COMPLETE_WITH_CONST("RENAME TO");
 
 	/* ALTER STATISTICS <name> */
-	else if (Matches3("ALTER", "STATISTICS", MatchAny))
+	else if (Matches("ALTER", "STATISTICS", MatchAny))
 		COMPLETE_WITH_LIST3("OWNER TO", "RENAME TO", "SET SCHEMA");
 
 	/* ALTER TRIGGER <name>, add ON */
-	else if (Matches3("ALTER", "TRIGGER", MatchAny))
+	else if (Matches("ALTER", "TRIGGER", MatchAny))
 		COMPLETE_WITH_CONST("ON");
 
-	else if (Matches4("ALTER", "TRIGGER", MatchAny, MatchAny))
+	else if (Matches("ALTER", "TRIGGER", MatchAny, MatchAny))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_trigger);
@@ -1863,17 +1841,17 @@ psql_completion(const char *text, int start, int end)
 	/*
 	 * If we have ALTER TRIGGER <sth> ON, then add the correct tablename
 	 */
-	else if (Matches4("ALTER", "TRIGGER", MatchAny, "ON"))
+	else if (Matches("ALTER", "TRIGGER", MatchAny, "ON"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 
 	/* ALTER TRIGGER <name> ON <name> */
-	else if (Matches5("ALTER", "TRIGGER", MatchAny, "ON", MatchAny))
+	else if (Matches("ALTER", "TRIGGER", MatchAny, "ON", MatchAny))
 		COMPLETE_WITH_CONST("RENAME TO");
 
 	/*
 	 * If we detect ALTER TABLE <name>, suggest sub commands
 	 */
-	else if (Matches3("ALTER", "TABLE", MatchAny))
+	else if (Matches("ALTER", "TABLE", MatchAny))
 	{
 		static const char *const list_ALTER2[] =
 		{"ADD", "ALTER", "CLUSTER ON", "DISABLE", "DROP", "ENABLE", "INHERIT",
@@ -1884,114 +1862,114 @@ psql_completion(const char *text, int start, int end)
 		COMPLETE_WITH_LIST(list_ALTER2);
 	}
 	/* ALTER TABLE xxx ENABLE */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "ENABLE"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE"))
 		COMPLETE_WITH_LIST5("ALWAYS", "REPLICA", "ROW LEVEL SECURITY", "RULE",
 							"TRIGGER");
-	else if (Matches5("ALTER", "TABLE", MatchAny, "ENABLE", "REPLICA|ALWAYS"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "REPLICA|ALWAYS"))
 		COMPLETE_WITH_LIST2("RULE", "TRIGGER");
-	else if (Matches5("ALTER", "TABLE", MatchAny, "ENABLE", "RULE"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "RULE"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_rule_of_table);
 	}
-	else if (Matches6("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "RULE"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "RULE"))
 	{
 		completion_info_charp = prev4_wd;
 		COMPLETE_WITH_QUERY(Query_for_rule_of_table);
 	}
-	else if (Matches5("ALTER", "TABLE", MatchAny, "ENABLE", "TRIGGER"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "TRIGGER"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_trigger_of_table);
 	}
-	else if (Matches6("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "TRIGGER"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "TRIGGER"))
 	{
 		completion_info_charp = prev4_wd;
 		COMPLETE_WITH_QUERY(Query_for_trigger_of_table);
 	}
 	/* ALTER TABLE xxx INHERIT */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "INHERIT"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "INHERIT"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
 	/* ALTER TABLE xxx NO INHERIT */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "NO", "INHERIT"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "NO", "INHERIT"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
 	/* ALTER TABLE xxx DISABLE */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "DISABLE"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE"))
 		COMPLETE_WITH_LIST3("ROW LEVEL SECURITY", "RULE", "TRIGGER");
-	else if (Matches5("ALTER", "TABLE", MatchAny, "DISABLE", "RULE"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE", "RULE"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_rule_of_table);
 	}
-	else if (Matches5("ALTER", "TABLE", MatchAny, "DISABLE", "TRIGGER"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE", "TRIGGER"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_trigger_of_table);
 	}
 
 	/* ALTER TABLE xxx ALTER */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "ALTER"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER"))
 		COMPLETE_WITH_ATTR(prev2_wd, " UNION SELECT 'COLUMN' UNION SELECT 'CONSTRAINT'");
 
 	/* ALTER TABLE xxx RENAME */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "RENAME"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "RENAME"))
 		COMPLETE_WITH_ATTR(prev2_wd, " UNION SELECT 'COLUMN' UNION SELECT 'CONSTRAINT' UNION SELECT 'TO'");
-	else if (Matches5("ALTER", "TABLE", MatchAny, "ALTER|RENAME", "COLUMN"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|RENAME", "COLUMN"))
 		COMPLETE_WITH_ATTR(prev3_wd, "");
 
 	/* ALTER TABLE xxx RENAME yyy */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "RENAME", MatchAnyExcept("CONSTRAINT|TO")))
+	else if (Matches("ALTER", "TABLE", MatchAny, "RENAME", MatchAnyExcept("CONSTRAINT|TO")))
 		COMPLETE_WITH_CONST("TO");
 
 	/* ALTER TABLE xxx RENAME COLUMN/CONSTRAINT yyy */
-	else if (Matches6("ALTER", "TABLE", MatchAny, "RENAME", "COLUMN|CONSTRAINT", MatchAnyExcept("TO")))
+	else if (Matches("ALTER", "TABLE", MatchAny, "RENAME", "COLUMN|CONSTRAINT", MatchAnyExcept("TO")))
 		COMPLETE_WITH_CONST("TO");
 
 	/* If we have ALTER TABLE <sth> DROP, provide COLUMN or CONSTRAINT */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "DROP"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "DROP"))
 		COMPLETE_WITH_LIST2("COLUMN", "CONSTRAINT");
 	/* If we have ALTER TABLE <sth> DROP COLUMN, provide list of columns */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "DROP", "COLUMN"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "DROP", "COLUMN"))
 		COMPLETE_WITH_ATTR(prev3_wd, "");
 
 	/*
 	 * If we have ALTER TABLE <sth> ALTER|DROP|RENAME|VALIDATE CONSTRAINT,
 	 * provide list of constraints
 	 */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "ALTER|DROP|RENAME|VALIDATE", "CONSTRAINT"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|DROP|RENAME|VALIDATE", "CONSTRAINT"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_constraint_of_table);
 	}
 	/* ALTER TABLE ALTER [COLUMN] <foo> */
-	else if (Matches6("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny) ||
-			 Matches5("ALTER", "TABLE", MatchAny, "ALTER", MatchAny))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny) ||
+			 Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny))
 		COMPLETE_WITH_LIST6("TYPE", "SET", "RESET", "RESTART", "ADD", "DROP");
 	/* ALTER TABLE ALTER [COLUMN] <foo> SET */
-	else if (Matches7("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET") ||
-			 Matches6("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET") ||
+			 Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET"))
 		COMPLETE_WITH_LIST5("(", "DEFAULT", "NOT NULL", "STATISTICS", "STORAGE");
 	/* ALTER TABLE ALTER [COLUMN] <foo> SET ( */
-	else if (Matches8("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "(") ||
-			 Matches7("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "("))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "(") ||
+			 Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "("))
 		COMPLETE_WITH_LIST2("n_distinct", "n_distinct_inherited");
 	/* ALTER TABLE ALTER [COLUMN] <foo> SET STORAGE */
-	else if (Matches8("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STORAGE") ||
-			 Matches7("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "STORAGE"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STORAGE") ||
+			 Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "STORAGE"))
 		COMPLETE_WITH_LIST4("PLAIN", "EXTERNAL", "EXTENDED", "MAIN");
 	/* ALTER TABLE ALTER [COLUMN] <foo> DROP */
-	else if (Matches7("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "DROP") ||
-			 Matches6("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "DROP"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "DROP") ||
+			 Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "DROP"))
 		COMPLETE_WITH_LIST3("DEFAULT", "IDENTITY", "NOT NULL");
-	else if (Matches4("ALTER", "TABLE", MatchAny, "CLUSTER"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "CLUSTER"))
 		COMPLETE_WITH_CONST("ON");
-	else if (Matches5("ALTER", "TABLE", MatchAny, "CLUSTER", "ON"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "CLUSTER", "ON"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_index_of_table);
 	}
 	/* If we have ALTER TABLE <sth> SET, provide list of attributes and '(' */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "SET"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "SET"))
 		COMPLETE_WITH_LIST7("(", "LOGGED", "SCHEMA", "TABLESPACE", "UNLOGGED",
 							"WITH", "WITHOUT");
 
@@ -1999,19 +1977,19 @@ psql_completion(const char *text, int start, int end)
 	 * If we have ALTER TABLE <sth> SET TABLESPACE provide a list of
 	 * tablespaces
 	 */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "SET", "TABLESPACE"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "SET", "TABLESPACE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
 	/* If we have ALTER TABLE <sth> SET WITH provide OIDS */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "SET", "WITH"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "SET", "WITH"))
 		COMPLETE_WITH_CONST("OIDS");
 	/* If we have ALTER TABLE <sth> SET WITHOUT provide CLUSTER or OIDS */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "SET", "WITHOUT"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "SET", "WITHOUT"))
 		COMPLETE_WITH_LIST2("CLUSTER", "OIDS");
 	/* ALTER TABLE <foo> RESET */
-	else if (Matches4("ALTER", "TABLE", MatchAny, "RESET"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "RESET"))
 		COMPLETE_WITH_CONST("(");
 	/* ALTER TABLE <foo> SET|RESET ( */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "SET|RESET", "("))
+	else if (Matches("ALTER", "TABLE", MatchAny, "SET|RESET", "("))
 	{
 		static const char *const list_TABLEOPTIONS[] =
 		{
@@ -2050,146 +2028,146 @@ psql_completion(const char *text, int start, int end)
 
 		COMPLETE_WITH_LIST(list_TABLEOPTIONS);
 	}
-	else if (Matches7("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING", "INDEX"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING", "INDEX"))
 	{
 		completion_info_charp = prev5_wd;
 		COMPLETE_WITH_QUERY(Query_for_index_of_table);
 	}
-	else if (Matches6("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING"))
 		COMPLETE_WITH_CONST("INDEX");
-	else if (Matches5("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY"))
 		COMPLETE_WITH_LIST4("FULL", "NOTHING", "DEFAULT", "USING");
-	else if (Matches4("ALTER", "TABLE", MatchAny, "REPLICA"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA"))
 		COMPLETE_WITH_CONST("IDENTITY");
 
 	/*
 	 * If we have ALTER TABLE <foo> ATTACH PARTITION, provide a list of
 	 * tables.
 	 */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "ATTACH", "PARTITION"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "ATTACH", "PARTITION"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
 	/* Limited completion support for partition bound specification */
-	else if (TailMatches3("ATTACH", "PARTITION", MatchAny))
+	else if (TailMatches("ATTACH", "PARTITION", MatchAny))
 		COMPLETE_WITH_LIST2("FOR VALUES", "DEFAULT");
-	else if (TailMatches2("FOR", "VALUES"))
+	else if (TailMatches("FOR", "VALUES"))
 		COMPLETE_WITH_LIST3("FROM (", "IN (", "WITH (");
 
 	/*
 	 * If we have ALTER TABLE <foo> DETACH PARTITION, provide a list of
 	 * partitions of <foo>.
 	 */
-	else if (Matches5("ALTER", "TABLE", MatchAny, "DETACH", "PARTITION"))
+	else if (Matches("ALTER", "TABLE", MatchAny, "DETACH", "PARTITION"))
 	{
 		completion_info_charp = prev3_wd;
 		COMPLETE_WITH_QUERY(Query_for_partition_of_table);
 	}
 
 	/* ALTER TABLESPACE <foo> with RENAME TO, OWNER TO, SET, RESET */
-	else if (Matches3("ALTER", "TABLESPACE", MatchAny))
+	else if (Matches("ALTER", "TABLESPACE", MatchAny))
 		COMPLETE_WITH_LIST4("RENAME TO", "OWNER TO", "SET", "RESET");
 	/* ALTER TABLESPACE <foo> SET|RESET */
-	else if (Matches4("ALTER", "TABLESPACE", MatchAny, "SET|RESET"))
+	else if (Matches("ALTER", "TABLESPACE", MatchAny, "SET|RESET"))
 		COMPLETE_WITH_CONST("(");
 	/* ALTER TABLESPACE <foo> SET|RESET ( */
-	else if (Matches5("ALTER", "TABLESPACE", MatchAny, "SET|RESET", "("))
+	else if (Matches("ALTER", "TABLESPACE", MatchAny, "SET|RESET", "("))
 		COMPLETE_WITH_LIST3("seq_page_cost", "random_page_cost",
 							"effective_io_concurrency");
 
 	/* ALTER TEXT SEARCH */
-	else if (Matches3("ALTER", "TEXT", "SEARCH"))
+	else if (Matches("ALTER", "TEXT", "SEARCH"))
 		COMPLETE_WITH_LIST4("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
-	else if (Matches5("ALTER", "TEXT", "SEARCH", "TEMPLATE|PARSER", MatchAny))
+	else if (Matches("ALTER", "TEXT", "SEARCH", "TEMPLATE|PARSER", MatchAny))
 		COMPLETE_WITH_LIST2("RENAME TO", "SET SCHEMA");
-	else if (Matches5("ALTER", "TEXT", "SEARCH", "DICTIONARY", MatchAny))
+	else if (Matches("ALTER", "TEXT", "SEARCH", "DICTIONARY", MatchAny))
 		COMPLETE_WITH_LIST3("OWNER TO", "RENAME TO", "SET SCHEMA");
-	else if (Matches5("ALTER", "TEXT", "SEARCH", "CONFIGURATION", MatchAny))
+	else if (Matches("ALTER", "TEXT", "SEARCH", "CONFIGURATION", MatchAny))
 		COMPLETE_WITH_LIST6("ADD MAPPING FOR", "ALTER MAPPING",
 							"DROP MAPPING FOR",
 							"OWNER TO", "RENAME TO", "SET SCHEMA");
 
 	/* complete ALTER TYPE <foo> with actions */
-	else if (Matches3("ALTER", "TYPE", MatchAny))
+	else if (Matches("ALTER", "TYPE", MatchAny))
 		COMPLETE_WITH_LIST7("ADD ATTRIBUTE", "ADD VALUE", "ALTER ATTRIBUTE",
 							"DROP ATTRIBUTE",
 							"OWNER TO", "RENAME", "SET SCHEMA");
 	/* complete ALTER TYPE <foo> ADD with actions */
-	else if (Matches4("ALTER", "TYPE", MatchAny, "ADD"))
+	else if (Matches("ALTER", "TYPE", MatchAny, "ADD"))
 		COMPLETE_WITH_LIST2("ATTRIBUTE", "VALUE");
 	/* ALTER TYPE <foo> RENAME	*/
-	else if (Matches4("ALTER", "TYPE", MatchAny, "RENAME"))
+	else if (Matches("ALTER", "TYPE", MatchAny, "RENAME"))
 		COMPLETE_WITH_LIST3("ATTRIBUTE", "TO", "VALUE");
 	/* ALTER TYPE xxx RENAME (ATTRIBUTE|VALUE) yyy */
-	else if (Matches6("ALTER", "TYPE", MatchAny, "RENAME", "ATTRIBUTE|VALUE", MatchAny))
+	else if (Matches("ALTER", "TYPE", MatchAny, "RENAME", "ATTRIBUTE|VALUE", MatchAny))
 		COMPLETE_WITH_CONST("TO");
 
 	/*
 	 * If we have ALTER TYPE <sth> ALTER/DROP/RENAME ATTRIBUTE, provide list
 	 * of attributes
 	 */
-	else if (Matches5("ALTER", "TYPE", MatchAny, "ALTER|DROP|RENAME", "ATTRIBUTE"))
+	else if (Matches("ALTER", "TYPE", MatchAny, "ALTER|DROP|RENAME", "ATTRIBUTE"))
 		COMPLETE_WITH_ATTR(prev3_wd, "");
 	/* ALTER TYPE ALTER ATTRIBUTE <foo> */
-	else if (Matches6("ALTER", "TYPE", MatchAny, "ALTER", "ATTRIBUTE", MatchAny))
+	else if (Matches("ALTER", "TYPE", MatchAny, "ALTER", "ATTRIBUTE", MatchAny))
 		COMPLETE_WITH_CONST("TYPE");
 	/* complete ALTER GROUP <foo> */
-	else if (Matches3("ALTER", "GROUP", MatchAny))
+	else if (Matches("ALTER", "GROUP", MatchAny))
 		COMPLETE_WITH_LIST3("ADD USER", "DROP USER", "RENAME TO");
 	/* complete ALTER GROUP <foo> ADD|DROP with USER */
-	else if (Matches4("ALTER", "GROUP", MatchAny, "ADD|DROP"))
+	else if (Matches("ALTER", "GROUP", MatchAny, "ADD|DROP"))
 		COMPLETE_WITH_CONST("USER");
 	/* complete ALTER GROUP <foo> ADD|DROP USER with a user name */
-	else if (Matches5("ALTER", "GROUP", MatchAny, "ADD|DROP", "USER"))
+	else if (Matches("ALTER", "GROUP", MatchAny, "ADD|DROP", "USER"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
 
 	/*
 	 * If we have ALTER TYPE <sth> RENAME VALUE, provide list of enum values
 	 */
-	else if (Matches5("ALTER", "TYPE", MatchAny, "RENAME", "VALUE"))
+	else if (Matches("ALTER", "TYPE", MatchAny, "RENAME", "VALUE"))
 		COMPLETE_WITH_ENUM_VALUE(prev3_wd);
 
 /* BEGIN */
-	else if (Matches1("BEGIN"))
+	else if (Matches("BEGIN"))
 		COMPLETE_WITH_LIST6("WORK", "TRANSACTION", "ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
 /* END, ABORT */
-	else if (Matches1("END|ABORT"))
+	else if (Matches("END|ABORT"))
 		COMPLETE_WITH_LIST2("WORK", "TRANSACTION");
 /* COMMIT */
-	else if (Matches1("COMMIT"))
+	else if (Matches("COMMIT"))
 		COMPLETE_WITH_LIST3("WORK", "TRANSACTION", "PREPARED");
 /* RELEASE SAVEPOINT */
-	else if (Matches1("RELEASE"))
+	else if (Matches("RELEASE"))
 		COMPLETE_WITH_CONST("SAVEPOINT");
 /* ROLLBACK */
-	else if (Matches1("ROLLBACK"))
+	else if (Matches("ROLLBACK"))
 		COMPLETE_WITH_LIST4("WORK", "TRANSACTION", "TO SAVEPOINT", "PREPARED");
 /* CALL */
-	else if (Matches1("CALL"))
+	else if (Matches("CALL"))
 		COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_procedures, NULL);
-	else if (Matches2("CALL", MatchAny))
+	else if (Matches("CALL", MatchAny))
 		COMPLETE_WITH_CONST("(");
 /* CLUSTER */
-	else if (Matches1("CLUSTER"))
+	else if (Matches("CLUSTER"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm, "UNION SELECT 'VERBOSE'");
-	else if (Matches2("CLUSTER", "VERBOSE"))
+	else if (Matches("CLUSTER", "VERBOSE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm, NULL);
 	/* If we have CLUSTER <sth>, then add "USING" */
-	else if (Matches2("CLUSTER", MatchAnyExcept("VERBOSE|ON")))
+	else if (Matches("CLUSTER", MatchAnyExcept("VERBOSE|ON")))
 		COMPLETE_WITH_CONST("USING");
 	/* If we have CLUSTER VERBOSE <sth>, then add "USING" */
-	else if (Matches3("CLUSTER", "VERBOSE", MatchAny))
+	else if (Matches("CLUSTER", "VERBOSE", MatchAny))
 		COMPLETE_WITH_CONST("USING");
 	/* If we have CLUSTER <sth> USING, then add the index as well */
-	else if (Matches3("CLUSTER", MatchAny, "USING") ||
-			 Matches4("CLUSTER", "VERBOSE", MatchAny, "USING"))
+	else if (Matches("CLUSTER", MatchAny, "USING") ||
+			 Matches("CLUSTER", "VERBOSE", MatchAny, "USING"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_index_of_table);
 	}
 
 /* COMMENT */
-	else if (Matches1("COMMENT"))
+	else if (Matches("COMMENT"))
 		COMPLETE_WITH_CONST("ON");
-	else if (Matches2("COMMENT", "ON"))
+	else if (Matches("COMMENT", "ON"))
 	{
 		static const char *const list_COMMENT[] =
 		{"ACCESS METHOD", "CAST", "COLLATION", "CONVERSION", "DATABASE",
@@ -2204,28 +2182,28 @@ psql_completion(const char *text, int start, int end)
 
 		COMPLETE_WITH_LIST(list_COMMENT);
 	}
-	else if (Matches4("COMMENT", "ON", "ACCESS", "METHOD"))
+	else if (Matches("COMMENT", "ON", "ACCESS", "METHOD"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
-	else if (Matches3("COMMENT", "ON", "FOREIGN"))
+	else if (Matches("COMMENT", "ON", "FOREIGN"))
 		COMPLETE_WITH_LIST2("DATA WRAPPER", "TABLE");
-	else if (Matches4("COMMENT", "ON", "TEXT", "SEARCH"))
+	else if (Matches("COMMENT", "ON", "TEXT", "SEARCH"))
 		COMPLETE_WITH_LIST4("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
-	else if (Matches3("COMMENT", "ON", "CONSTRAINT"))
+	else if (Matches("COMMENT", "ON", "CONSTRAINT"))
 		COMPLETE_WITH_QUERY(Query_for_all_table_constraints);
-	else if (Matches4("COMMENT", "ON", "CONSTRAINT", MatchAny))
+	else if (Matches("COMMENT", "ON", "CONSTRAINT", MatchAny))
 		COMPLETE_WITH_CONST("ON");
-	else if (Matches5("COMMENT", "ON", "CONSTRAINT", MatchAny, "ON"))
+	else if (Matches("COMMENT", "ON", "CONSTRAINT", MatchAny, "ON"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_constraint);
 	}
-	else if (Matches4("COMMENT", "ON", "MATERIALIZED", "VIEW"))
+	else if (Matches("COMMENT", "ON", "MATERIALIZED", "VIEW"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
-	else if (Matches4("COMMENT", "ON", "EVENT", "TRIGGER"))
+	else if (Matches("COMMENT", "ON", "EVENT", "TRIGGER"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
-	else if (Matches4("COMMENT", "ON", MatchAny, MatchAnyExcept("IS")) ||
-			 Matches5("COMMENT", "ON", MatchAny, MatchAny, MatchAnyExcept("IS")) ||
-			 Matches6("COMMENT", "ON", MatchAny, MatchAny, MatchAny, MatchAnyExcept("IS")))
+	else if (Matches("COMMENT", "ON", MatchAny, MatchAnyExcept("IS")) ||
+			 Matches("COMMENT", "ON", MatchAny, MatchAny, MatchAnyExcept("IS")) ||
+			 Matches("COMMENT", "ON", MatchAny, MatchAny, MatchAny, MatchAnyExcept("IS")))
 		COMPLETE_WITH_CONST("IS");
 
 /* COPY */
@@ -2234,92 +2212,92 @@ psql_completion(const char *text, int start, int end)
 	 * If we have COPY, offer list of tables or "(" (Also cover the analogous
 	 * backslash command).
 	 */
-	else if (Matches1("COPY|\\copy"))
+	else if (Matches("COPY|\\copy"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables,
 								   " UNION ALL SELECT '('");
 	/* If we have COPY BINARY, complete with list of tables */
-	else if (Matches2("COPY", "BINARY"))
+	else if (Matches("COPY", "BINARY"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 	/* If we have COPY (, complete it with legal commands */
-	else if (Matches2("COPY|\\copy", "("))
+	else if (Matches("COPY|\\copy", "("))
 		COMPLETE_WITH_LIST7("SELECT", "TABLE", "VALUES", "INSERT", "UPDATE", "DELETE", "WITH");
 	/* If we have COPY [BINARY] <sth>, complete it with "TO" or "FROM" */
-	else if (Matches2("COPY|\\copy", MatchAny) ||
-			 Matches3("COPY", "BINARY", MatchAny))
+	else if (Matches("COPY|\\copy", MatchAny) ||
+			 Matches("COPY", "BINARY", MatchAny))
 		COMPLETE_WITH_LIST2("FROM", "TO");
 	/* If we have COPY [BINARY] <sth> FROM|TO, complete with filename */
-	else if (Matches3("COPY|\\copy", MatchAny, "FROM|TO") ||
-			 Matches4("COPY", "BINARY", MatchAny, "FROM|TO"))
+	else if (Matches("COPY|\\copy", MatchAny, "FROM|TO") ||
+			 Matches("COPY", "BINARY", MatchAny, "FROM|TO"))
 	{
 		completion_charp = "";
 		matches = completion_matches(text, complete_from_files);
 	}
 
 	/* Handle COPY [BINARY] <sth> FROM|TO filename */
-	else if (Matches4("COPY|\\copy", MatchAny, "FROM|TO", MatchAny) ||
-			 Matches5("COPY", "BINARY", MatchAny, "FROM|TO", MatchAny))
+	else if (Matches("COPY|\\copy", MatchAny, "FROM|TO", MatchAny) ||
+			 Matches("COPY", "BINARY", MatchAny, "FROM|TO", MatchAny))
 		COMPLETE_WITH_LIST6("BINARY", "OIDS", "DELIMITER", "NULL", "CSV",
 							"ENCODING");
 
 	/* Handle COPY [BINARY] <sth> FROM|TO filename CSV */
-	else if (Matches5("COPY|\\copy", MatchAny, "FROM|TO", MatchAny, "CSV") ||
-			 Matches6("COPY", "BINARY", MatchAny, "FROM|TO", MatchAny, "CSV"))
+	else if (Matches("COPY|\\copy", MatchAny, "FROM|TO", MatchAny, "CSV") ||
+			 Matches("COPY", "BINARY", MatchAny, "FROM|TO", MatchAny, "CSV"))
 		COMPLETE_WITH_LIST5("HEADER", "QUOTE", "ESCAPE", "FORCE QUOTE",
 							"FORCE NOT NULL");
 
 	/* CREATE ACCESS METHOD */
 	/* Complete "CREATE ACCESS METHOD <name>" */
-	else if (Matches4("CREATE", "ACCESS", "METHOD", MatchAny))
+	else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny))
 		COMPLETE_WITH_CONST("TYPE");
 	/* Complete "CREATE ACCESS METHOD <name> TYPE" */
-	else if (Matches5("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE"))
+	else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE"))
 		COMPLETE_WITH_CONST("INDEX");
 	/* Complete "CREATE ACCESS METHOD <name> TYPE <type>" */
-	else if (Matches6("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE", MatchAny))
+	else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE", MatchAny))
 		COMPLETE_WITH_CONST("HANDLER");
 
 	/* CREATE DATABASE */
-	else if (Matches3("CREATE", "DATABASE", MatchAny))
+	else if (Matches("CREATE", "DATABASE", MatchAny))
 		COMPLETE_WITH_LIST9("OWNER", "TEMPLATE", "ENCODING", "TABLESPACE",
 							"IS_TEMPLATE",
 							"ALLOW_CONNECTIONS", "CONNECTION LIMIT",
 							"LC_COLLATE", "LC_CTYPE");
 
-	else if (Matches4("CREATE", "DATABASE", MatchAny, "TEMPLATE"))
+	else if (Matches("CREATE", "DATABASE", MatchAny, "TEMPLATE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_template_databases);
 
 	/* CREATE EXTENSION */
 	/* Complete with available extensions rather than installed ones. */
-	else if (Matches2("CREATE", "EXTENSION"))
+	else if (Matches("CREATE", "EXTENSION"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_available_extensions);
 	/* CREATE EXTENSION <name> */
-	else if (Matches3("CREATE", "EXTENSION", MatchAny))
+	else if (Matches("CREATE", "EXTENSION", MatchAny))
 		COMPLETE_WITH_LIST3("WITH SCHEMA", "CASCADE", "VERSION");
 	/* CREATE EXTENSION <name> VERSION */
-	else if (Matches4("CREATE", "EXTENSION", MatchAny, "VERSION"))
+	else if (Matches("CREATE", "EXTENSION", MatchAny, "VERSION"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions);
 	}
 
 	/* CREATE FOREIGN */
-	else if (Matches2("CREATE", "FOREIGN"))
+	else if (Matches("CREATE", "FOREIGN"))
 		COMPLETE_WITH_LIST2("DATA WRAPPER", "TABLE");
 
 	/* CREATE FOREIGN DATA WRAPPER */
-	else if (Matches5("CREATE", "FOREIGN", "DATA", "WRAPPER", MatchAny))
+	else if (Matches("CREATE", "FOREIGN", "DATA", "WRAPPER", MatchAny))
 		COMPLETE_WITH_LIST3("HANDLER", "VALIDATOR", "OPTIONS");
 
 	/* CREATE INDEX --- is allowed inside CREATE SCHEMA, so use TailMatches */
 	/* First off we complete CREATE UNIQUE with "INDEX" */
-	else if (TailMatches2("CREATE", "UNIQUE"))
+	else if (TailMatches("CREATE", "UNIQUE"))
 		COMPLETE_WITH_CONST("INDEX");
 
 	/*
 	 * If we have CREATE|UNIQUE INDEX, then add "ON", "CONCURRENTLY", and
 	 * existing indexes
 	 */
-	else if (TailMatches2("CREATE|UNIQUE", "INDEX"))
+	else if (TailMatches("CREATE|UNIQUE", "INDEX"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
 								   " UNION SELECT 'ON'"
 								   " UNION SELECT 'CONCURRENTLY'");
@@ -2328,294 +2306,294 @@ psql_completion(const char *text, int start, int end)
 	 * Complete ... INDEX|CONCURRENTLY [<name>] ON with a list of relations
 	 * that can indexes can be created on
 	 */
-	else if (TailMatches3("INDEX|CONCURRENTLY", MatchAny, "ON") ||
-			 TailMatches2("INDEX|CONCURRENTLY", "ON"))
+	else if (TailMatches("INDEX|CONCURRENTLY", MatchAny, "ON") ||
+			 TailMatches("INDEX|CONCURRENTLY", "ON"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tpm, NULL);
 
 	/*
 	 * Complete CREATE|UNIQUE INDEX CONCURRENTLY with "ON" and existing
 	 * indexes
 	 */
-	else if (TailMatches3("CREATE|UNIQUE", "INDEX", "CONCURRENTLY"))
+	else if (TailMatches("CREATE|UNIQUE", "INDEX", "CONCURRENTLY"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
 								   " UNION SELECT 'ON'");
 	/* Complete CREATE|UNIQUE INDEX [CONCURRENTLY] <sth> with "ON" */
-	else if (TailMatches3("CREATE|UNIQUE", "INDEX", MatchAny) ||
-			 TailMatches4("CREATE|UNIQUE", "INDEX", "CONCURRENTLY", MatchAny))
+	else if (TailMatches("CREATE|UNIQUE", "INDEX", MatchAny) ||
+			 TailMatches("CREATE|UNIQUE", "INDEX", "CONCURRENTLY", MatchAny))
 		COMPLETE_WITH_CONST("ON");
 
 	/*
 	 * Complete INDEX <name> ON <table> with a list of table columns (which
 	 * should really be in parens)
 	 */
-	else if (TailMatches4("INDEX", MatchAny, "ON", MatchAny) ||
-			 TailMatches3("INDEX|CONCURRENTLY", "ON", MatchAny))
+	else if (TailMatches("INDEX", MatchAny, "ON", MatchAny) ||
+			 TailMatches("INDEX|CONCURRENTLY", "ON", MatchAny))
 		COMPLETE_WITH_LIST2("(", "USING");
-	else if (TailMatches5("INDEX", MatchAny, "ON", MatchAny, "(") ||
-			 TailMatches4("INDEX|CONCURRENTLY", "ON", MatchAny, "("))
+	else if (TailMatches("INDEX", MatchAny, "ON", MatchAny, "(") ||
+			 TailMatches("INDEX|CONCURRENTLY", "ON", MatchAny, "("))
 		COMPLETE_WITH_ATTR(prev2_wd, "");
 	/* same if you put in USING */
-	else if (TailMatches5("ON", MatchAny, "USING", MatchAny, "("))
+	else if (TailMatches("ON", MatchAny, "USING", MatchAny, "("))
 		COMPLETE_WITH_ATTR(prev4_wd, "");
 	/* Complete USING with an index method */
-	else if (TailMatches6("INDEX", MatchAny, MatchAny, "ON", MatchAny, "USING") ||
-			 TailMatches5("INDEX", MatchAny, "ON", MatchAny, "USING") ||
-			 TailMatches4("INDEX", "ON", MatchAny, "USING"))
+	else if (TailMatches("INDEX", MatchAny, MatchAny, "ON", MatchAny, "USING") ||
+			 TailMatches("INDEX", MatchAny, "ON", MatchAny, "USING") ||
+			 TailMatches("INDEX", "ON", MatchAny, "USING"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
-	else if (TailMatches4("ON", MatchAny, "USING", MatchAny) &&
-			 !TailMatches6("POLICY", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny) &&
-			 !TailMatches4("FOR", MatchAny, MatchAny, MatchAny))
+	else if (TailMatches("ON", MatchAny, "USING", MatchAny) &&
+			 !TailMatches("POLICY", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny) &&
+			 !TailMatches("FOR", MatchAny, MatchAny, MatchAny))
 		COMPLETE_WITH_CONST("(");
 
 	/* CREATE POLICY */
 	/* Complete "CREATE POLICY <name> ON" */
-	else if (Matches3("CREATE", "POLICY", MatchAny))
+	else if (Matches("CREATE", "POLICY", MatchAny))
 		COMPLETE_WITH_CONST("ON");
 	/* Complete "CREATE POLICY <name> ON <table>" */
-	else if (Matches4("CREATE", "POLICY", MatchAny, "ON"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 	/* Complete "CREATE POLICY <name> ON <table> AS|FOR|TO|USING|WITH CHECK" */
-	else if (Matches5("CREATE", "POLICY", MatchAny, "ON", MatchAny))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny))
 		COMPLETE_WITH_LIST5("AS", "FOR", "TO", "USING (", "WITH CHECK (");
 	/* CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE */
-	else if (Matches6("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS"))
 		COMPLETE_WITH_LIST2("PERMISSIVE", "RESTRICTIVE");
 
 	/*
 	 * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE
 	 * FOR|TO|USING|WITH CHECK
 	 */
-	else if (Matches7("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny))
 		COMPLETE_WITH_LIST4("FOR", "TO", "USING", "WITH CHECK");
 	/* CREATE POLICY <name> ON <table> FOR ALL|SELECT|INSERT|UPDATE|DELETE */
-	else if (Matches6("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR"))
 		COMPLETE_WITH_LIST5("ALL", "SELECT", "INSERT", "UPDATE", "DELETE");
 	/* Complete "CREATE POLICY <name> ON <table> FOR INSERT TO|WITH CHECK" */
-	else if (Matches7("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "INSERT"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "INSERT"))
 		COMPLETE_WITH_LIST2("TO", "WITH CHECK (");
 	/* Complete "CREATE POLICY <name> ON <table> FOR SELECT|DELETE TO|USING" */
-	else if (Matches7("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "SELECT|DELETE"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "SELECT|DELETE"))
 		COMPLETE_WITH_LIST2("TO", "USING (");
 	/* CREATE POLICY <name> ON <table> FOR ALL|UPDATE TO|USING|WITH CHECK */
-	else if (Matches7("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "ALL|UPDATE"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "ALL|UPDATE"))
 		COMPLETE_WITH_LIST3("TO", "USING (", "WITH CHECK (");
 	/* Complete "CREATE POLICY <name> ON <table> TO <role>" */
-	else if (Matches6("CREATE", "POLICY", MatchAny, "ON", MatchAny, "TO"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "TO"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
 	/* Complete "CREATE POLICY <name> ON <table> USING (" */
-	else if (Matches6("CREATE", "POLICY", MatchAny, "ON", MatchAny, "USING"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "USING"))
 		COMPLETE_WITH_CONST("(");
 
 	/*
 	 * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
 	 * ALL|SELECT|INSERT|UPDATE|DELETE
 	 */
-	else if (Matches8("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR"))
 		COMPLETE_WITH_LIST5("ALL", "SELECT", "INSERT", "UPDATE", "DELETE");
 
 	/*
 	 * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
 	 * INSERT TO|WITH CHECK"
 	 */
-	else if (Matches9("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "INSERT"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "INSERT"))
 		COMPLETE_WITH_LIST2("TO", "WITH CHECK (");
 
 	/*
 	 * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
 	 * SELECT|DELETE TO|USING"
 	 */
-	else if (Matches9("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "SELECT|DELETE"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "SELECT|DELETE"))
 		COMPLETE_WITH_LIST2("TO", "USING (");
 
 	/*
 	 * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
 	 * ALL|UPDATE TO|USING|WITH CHECK
 	 */
-	else if (Matches9("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "ALL|UPDATE"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "ALL|UPDATE"))
 		COMPLETE_WITH_LIST3("TO", "USING (", "WITH CHECK (");
 
 	/*
 	 * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE TO
 	 * <role>"
 	 */
-	else if (Matches8("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "TO"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "TO"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
 
 	/*
 	 * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE
 	 * USING ("
 	 */
-	else if (Matches8("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "USING"))
+	else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "USING"))
 		COMPLETE_WITH_CONST("(");
 
 
 /* CREATE PUBLICATION */
-	else if (Matches3("CREATE", "PUBLICATION", MatchAny))
+	else if (Matches("CREATE", "PUBLICATION", MatchAny))
 		COMPLETE_WITH_LIST3("FOR TABLE", "FOR ALL TABLES", "WITH (");
-	else if (Matches4("CREATE", "PUBLICATION", MatchAny, "FOR"))
+	else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR"))
 		COMPLETE_WITH_LIST2("TABLE", "ALL TABLES");
 	/* Complete "CREATE PUBLICATION <name> FOR TABLE <table>" */
-	else if (Matches4("CREATE", "PUBLICATION", MatchAny, "FOR TABLE"))
+	else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR TABLE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 	/* Complete "CREATE PUBLICATION <name> [...] WITH" */
-	else if (HeadMatches2("CREATE", "PUBLICATION") && TailMatches2("WITH", "("))
+	else if (HeadMatches("CREATE", "PUBLICATION") && TailMatches("WITH", "("))
 		COMPLETE_WITH_CONST("publish");
 
 /* CREATE RULE */
 	/* Complete "CREATE RULE <sth>" with "AS ON" */
-	else if (Matches3("CREATE", "RULE", MatchAny))
+	else if (Matches("CREATE", "RULE", MatchAny))
 		COMPLETE_WITH_CONST("AS ON");
 	/* Complete "CREATE RULE <sth> AS" with "ON" */
-	else if (Matches4("CREATE", "RULE", MatchAny, "AS"))
+	else if (Matches("CREATE", "RULE", MatchAny, "AS"))
 		COMPLETE_WITH_CONST("ON");
 	/* Complete "CREATE RULE <sth> AS ON" with SELECT|UPDATE|INSERT|DELETE */
-	else if (Matches5("CREATE", "RULE", MatchAny, "AS", "ON"))
+	else if (Matches("CREATE", "RULE", MatchAny, "AS", "ON"))
 		COMPLETE_WITH_LIST4("SELECT", "UPDATE", "INSERT", "DELETE");
 	/* Complete "AS ON SELECT|UPDATE|INSERT|DELETE" with a "TO" */
-	else if (TailMatches3("AS", "ON", "SELECT|UPDATE|INSERT|DELETE"))
+	else if (TailMatches("AS", "ON", "SELECT|UPDATE|INSERT|DELETE"))
 		COMPLETE_WITH_CONST("TO");
 	/* Complete "AS ON <sth> TO" with a table name */
-	else if (TailMatches4("AS", "ON", "SELECT|UPDATE|INSERT|DELETE", "TO"))
+	else if (TailMatches("AS", "ON", "SELECT|UPDATE|INSERT|DELETE", "TO"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 
 /* CREATE SEQUENCE --- is allowed inside CREATE SCHEMA, so use TailMatches */
-	else if (TailMatches3("CREATE", "SEQUENCE", MatchAny) ||
-			 TailMatches4("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny))
+	else if (TailMatches("CREATE", "SEQUENCE", MatchAny) ||
+			 TailMatches("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny))
 		COMPLETE_WITH_LIST8("INCREMENT BY", "MINVALUE", "MAXVALUE", "NO", "CACHE",
 							"CYCLE", "OWNED BY", "START WITH");
-	else if (TailMatches4("CREATE", "SEQUENCE", MatchAny, "NO") ||
-			 TailMatches5("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny, "NO"))
+	else if (TailMatches("CREATE", "SEQUENCE", MatchAny, "NO") ||
+			 TailMatches("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny, "NO"))
 		COMPLETE_WITH_LIST3("MINVALUE", "MAXVALUE", "CYCLE");
 
 /* CREATE SERVER <name> */
-	else if (Matches3("CREATE", "SERVER", MatchAny))
+	else if (Matches("CREATE", "SERVER", MatchAny))
 		COMPLETE_WITH_LIST3("TYPE", "VERSION", "FOREIGN DATA WRAPPER");
 
 /* CREATE STATISTICS <name> */
-	else if (Matches3("CREATE", "STATISTICS", MatchAny))
+	else if (Matches("CREATE", "STATISTICS", MatchAny))
 		COMPLETE_WITH_LIST2("(", "ON");
-	else if (Matches4("CREATE", "STATISTICS", MatchAny, "("))
+	else if (Matches("CREATE", "STATISTICS", MatchAny, "("))
 		COMPLETE_WITH_LIST2("ndistinct", "dependencies");
-	else if (HeadMatches3("CREATE", "STATISTICS", MatchAny) &&
+	else if (HeadMatches("CREATE", "STATISTICS", MatchAny) &&
 			 previous_words[0][0] == '(' &&
 			 previous_words[0][strlen(previous_words[0]) - 1] == ')')
 		COMPLETE_WITH_CONST("ON");
-	else if (HeadMatches3("CREATE", "STATISTICS", MatchAny) &&
-			 TailMatches1("FROM"))
+	else if (HeadMatches("CREATE", "STATISTICS", MatchAny) &&
+			 TailMatches("FROM"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 
 /* CREATE TABLE --- is allowed inside CREATE SCHEMA, so use TailMatches */
 	/* Complete "CREATE TEMP/TEMPORARY" with the possible temp objects */
-	else if (TailMatches2("CREATE", "TEMP|TEMPORARY"))
+	else if (TailMatches("CREATE", "TEMP|TEMPORARY"))
 		COMPLETE_WITH_LIST3("SEQUENCE", "TABLE", "VIEW");
 	/* Complete "CREATE UNLOGGED" with TABLE or MATVIEW */
-	else if (TailMatches2("CREATE", "UNLOGGED"))
+	else if (TailMatches("CREATE", "UNLOGGED"))
 		COMPLETE_WITH_LIST2("TABLE", "MATERIALIZED VIEW");
 	/* Complete PARTITION BY with RANGE ( or LIST ( or ... */
-	else if (TailMatches2("PARTITION", "BY"))
+	else if (TailMatches("PARTITION", "BY"))
 		COMPLETE_WITH_LIST3("RANGE (", "LIST (", "HASH (");
 	/* If we have xxx PARTITION OF, provide a list of partitioned tables */
-	else if (TailMatches2("PARTITION", "OF"))
+	else if (TailMatches("PARTITION", "OF"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_tables, "");
 	/* Limited completion support for partition bound specification */
-	else if (TailMatches3("PARTITION", "OF", MatchAny))
+	else if (TailMatches("PARTITION", "OF", MatchAny))
 		COMPLETE_WITH_LIST2("FOR VALUES", "DEFAULT");
 
 /* CREATE TABLESPACE */
-	else if (Matches3("CREATE", "TABLESPACE", MatchAny))
+	else if (Matches("CREATE", "TABLESPACE", MatchAny))
 		COMPLETE_WITH_LIST2("OWNER", "LOCATION");
 	/* Complete CREATE TABLESPACE name OWNER name with "LOCATION" */
-	else if (Matches5("CREATE", "TABLESPACE", MatchAny, "OWNER", MatchAny))
+	else if (Matches("CREATE", "TABLESPACE", MatchAny, "OWNER", MatchAny))
 		COMPLETE_WITH_CONST("LOCATION");
 
 /* CREATE TEXT SEARCH */
-	else if (Matches3("CREATE", "TEXT", "SEARCH"))
+	else if (Matches("CREATE", "TEXT", "SEARCH"))
 		COMPLETE_WITH_LIST4("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
-	else if (Matches5("CREATE", "TEXT", "SEARCH", "CONFIGURATION", MatchAny))
+	else if (Matches("CREATE", "TEXT", "SEARCH", "CONFIGURATION", MatchAny))
 		COMPLETE_WITH_CONST("(");
 
 /* CREATE SUBSCRIPTION */
-	else if (Matches3("CREATE", "SUBSCRIPTION", MatchAny))
+	else if (Matches("CREATE", "SUBSCRIPTION", MatchAny))
 		COMPLETE_WITH_CONST("CONNECTION");
-	else if (Matches5("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION", MatchAny))
+	else if (Matches("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION", MatchAny))
 		COMPLETE_WITH_CONST("PUBLICATION");
-	else if (Matches6("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION",
+	else if (Matches("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION",
 					  MatchAny, "PUBLICATION"))
 	{
 		/* complete with nothing here as this refers to remote publications */
 	}
-	else if (HeadMatches2("CREATE", "SUBSCRIPTION") && TailMatches2("PUBLICATION", MatchAny))
+	else if (HeadMatches("CREATE", "SUBSCRIPTION") && TailMatches("PUBLICATION", MatchAny))
 		COMPLETE_WITH_CONST("WITH (");
 	/* Complete "CREATE SUBSCRIPTION <name> ...  WITH ( <opt>" */
-	else if (HeadMatches2("CREATE", "SUBSCRIPTION") && TailMatches2("WITH", "("))
+	else if (HeadMatches("CREATE", "SUBSCRIPTION") && TailMatches("WITH", "("))
 		COMPLETE_WITH_LIST6("copy_data", "connect", "create_slot", "enabled",
 							"slot_name", "synchronous_commit");
 
 /* CREATE TRIGGER --- is allowed inside CREATE SCHEMA, so use TailMatches */
 	/* complete CREATE TRIGGER <name> with BEFORE,AFTER,INSTEAD OF */
-	else if (TailMatches3("CREATE", "TRIGGER", MatchAny))
+	else if (TailMatches("CREATE", "TRIGGER", MatchAny))
 		COMPLETE_WITH_LIST3("BEFORE", "AFTER", "INSTEAD OF");
 	/* complete CREATE TRIGGER <name> BEFORE,AFTER with an event */
-	else if (TailMatches4("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER"))
+	else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER"))
 		COMPLETE_WITH_LIST4("INSERT", "DELETE", "UPDATE", "TRUNCATE");
 	/* complete CREATE TRIGGER <name> INSTEAD OF with an event */
-	else if (TailMatches5("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF"))
+	else if (TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF"))
 		COMPLETE_WITH_LIST3("INSERT", "DELETE", "UPDATE");
 	/* complete CREATE TRIGGER <name> BEFORE,AFTER sth with OR,ON */
-	else if (TailMatches5("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny) ||
-			 TailMatches6("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny))
+	else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny) ||
+			 TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny))
 		COMPLETE_WITH_LIST2("ON", "OR");
 
 	/*
 	 * complete CREATE TRIGGER <name> BEFORE,AFTER event ON with a list of
 	 * tables
 	 */
-	else if (TailMatches6("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny, "ON"))
+	else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny, "ON"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 	/* complete CREATE TRIGGER ... INSTEAD OF event ON with a list of views */
-	else if (TailMatches7("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny, "ON"))
+	else if (TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny, "ON"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
-	else if (HeadMatches2("CREATE", "TRIGGER") && TailMatches2("ON", MatchAny))
+	else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("ON", MatchAny))
 		COMPLETE_WITH_LIST7("NOT DEFERRABLE", "DEFERRABLE", "INITIALLY",
 							"REFERENCING", "FOR", "WHEN (", "EXECUTE PROCEDURE");
-	else if (HeadMatches2("CREATE", "TRIGGER") &&
-			 (TailMatches1("DEFERRABLE") || TailMatches2("INITIALLY", "IMMEDIATE|DEFERRED")))
+	else if (HeadMatches("CREATE", "TRIGGER") &&
+			 (TailMatches("DEFERRABLE") || TailMatches("INITIALLY", "IMMEDIATE|DEFERRED")))
 		COMPLETE_WITH_LIST4("REFERENCING", "FOR", "WHEN (", "EXECUTE PROCEDURE");
-	else if (HeadMatches2("CREATE", "TRIGGER") && TailMatches1("REFERENCING"))
+	else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("REFERENCING"))
 		COMPLETE_WITH_LIST2("OLD TABLE", "NEW TABLE");
-	else if (HeadMatches2("CREATE", "TRIGGER") && TailMatches2("OLD|NEW", "TABLE"))
+	else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("OLD|NEW", "TABLE"))
 		COMPLETE_WITH_CONST("AS");
-	else if (HeadMatches2("CREATE", "TRIGGER") &&
-			 (TailMatches5("REFERENCING", "OLD", "TABLE", "AS", MatchAny) ||
-			  TailMatches4("REFERENCING", "OLD", "TABLE", MatchAny)))
+	else if (HeadMatches("CREATE", "TRIGGER") &&
+			 (TailMatches("REFERENCING", "OLD", "TABLE", "AS", MatchAny) ||
+			  TailMatches("REFERENCING", "OLD", "TABLE", MatchAny)))
 		COMPLETE_WITH_LIST4("NEW TABLE", "FOR", "WHEN (", "EXECUTE PROCEDURE");
-	else if (HeadMatches2("CREATE", "TRIGGER") &&
-			 (TailMatches5("REFERENCING", "NEW", "TABLE", "AS", MatchAny) ||
-			  TailMatches4("REFERENCING", "NEW", "TABLE", MatchAny)))
+	else if (HeadMatches("CREATE", "TRIGGER") &&
+			 (TailMatches("REFERENCING", "NEW", "TABLE", "AS", MatchAny) ||
+			  TailMatches("REFERENCING", "NEW", "TABLE", MatchAny)))
 		COMPLETE_WITH_LIST4("OLD TABLE", "FOR", "WHEN (", "EXECUTE PROCEDURE");
-	else if (HeadMatches2("CREATE", "TRIGGER") &&
-			 (TailMatches9("REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
-			  TailMatches8("REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
-			  TailMatches8("REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", MatchAny) ||
-			  TailMatches7("REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", MatchAny)))
+	else if (HeadMatches("CREATE", "TRIGGER") &&
+			 (TailMatches("REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
+			  TailMatches("REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
+			  TailMatches("REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", MatchAny) ||
+			  TailMatches("REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", MatchAny)))
 		COMPLETE_WITH_LIST3("FOR", "WHEN (", "EXECUTE PROCEDURE");
-	else if (HeadMatches2("CREATE", "TRIGGER") && TailMatches1("FOR"))
+	else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("FOR"))
 		COMPLETE_WITH_LIST3("EACH", "ROW", "STATEMENT");
-	else if (HeadMatches2("CREATE", "TRIGGER") && TailMatches2("FOR", "EACH"))
+	else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("FOR", "EACH"))
 		COMPLETE_WITH_LIST2("ROW", "STATEMENT");
-	else if (HeadMatches2("CREATE", "TRIGGER") &&
-			 (TailMatches3("FOR", "EACH", "ROW|STATEMENT") ||
-			  TailMatches2("FOR", "ROW|STATEMENT")))
+	else if (HeadMatches("CREATE", "TRIGGER") &&
+			 (TailMatches("FOR", "EACH", "ROW|STATEMENT") ||
+			  TailMatches("FOR", "ROW|STATEMENT")))
 		COMPLETE_WITH_LIST2("WHEN (", "EXECUTE PROCEDURE");
 	/* complete CREATE TRIGGER ... EXECUTE with PROCEDURE */
-	else if (HeadMatches2("CREATE", "TRIGGER") && TailMatches1("EXECUTE"))
+	else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("EXECUTE"))
 		COMPLETE_WITH_CONST("PROCEDURE");
-	else if (HeadMatches2("CREATE", "TRIGGER") && TailMatches2("EXECUTE", "PROCEDURE"))
+	else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("EXECUTE", "PROCEDURE"))
 		COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
 
 /* CREATE ROLE,USER,GROUP <name> */
-	else if (Matches3("CREATE", "ROLE|GROUP|USER", MatchAny) &&
-			 !TailMatches2("USER", "MAPPING"))
+	else if (Matches("CREATE", "ROLE|GROUP|USER", MatchAny) &&
+			 !TailMatches("USER", "MAPPING"))
 	{
 		static const char *const list_CREATEROLE[] =
 		{"ADMIN", "BYPASSRLS", "CONNECTION LIMIT", "CREATEDB", "CREATEROLE",
@@ -2629,7 +2607,7 @@ psql_completion(const char *text, int start, int end)
 	}
 
 /* CREATE ROLE,USER,GROUP <name> WITH */
-	else if (Matches4("CREATE", "ROLE|GROUP|USER", MatchAny, "WITH"))
+	else if (Matches("CREATE", "ROLE|GROUP|USER", MatchAny, "WITH"))
 	{
 		/* Similar to the above, but don't complete "WITH" again. */
 		static const char *const list_CREATEROLE_WITH[] =
@@ -2644,166 +2622,166 @@ psql_completion(const char *text, int start, int end)
 	}
 
 	/* complete CREATE ROLE,USER,GROUP <name> IN with ROLE,GROUP */
-	else if (Matches4("CREATE", "ROLE|USER|GROUP", MatchAny, "IN"))
+	else if (Matches("CREATE", "ROLE|USER|GROUP", MatchAny, "IN"))
 		COMPLETE_WITH_LIST2("GROUP", "ROLE");
 
 /* CREATE VIEW --- is allowed inside CREATE SCHEMA, so use TailMatches */
 	/* Complete CREATE VIEW <name> with AS */
-	else if (TailMatches3("CREATE", "VIEW", MatchAny))
+	else if (TailMatches("CREATE", "VIEW", MatchAny))
 		COMPLETE_WITH_CONST("AS");
 	/* Complete "CREATE VIEW <sth> AS with "SELECT" */
-	else if (TailMatches4("CREATE", "VIEW", MatchAny, "AS"))
+	else if (TailMatches("CREATE", "VIEW", MatchAny, "AS"))
 		COMPLETE_WITH_CONST("SELECT");
 
 /* CREATE MATERIALIZED VIEW */
-	else if (Matches2("CREATE", "MATERIALIZED"))
+	else if (Matches("CREATE", "MATERIALIZED"))
 		COMPLETE_WITH_CONST("VIEW");
 	/* Complete CREATE MATERIALIZED VIEW <name> with AS */
-	else if (Matches4("CREATE", "MATERIALIZED", "VIEW", MatchAny))
+	else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny))
 		COMPLETE_WITH_CONST("AS");
 	/* Complete "CREATE MATERIALIZED VIEW <sth> AS with "SELECT" */
-	else if (Matches5("CREATE", "MATERIALIZED", "VIEW", MatchAny, "AS"))
+	else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny, "AS"))
 		COMPLETE_WITH_CONST("SELECT");
 
 /* CREATE EVENT TRIGGER */
-	else if (Matches2("CREATE", "EVENT"))
+	else if (Matches("CREATE", "EVENT"))
 		COMPLETE_WITH_CONST("TRIGGER");
 	/* Complete CREATE EVENT TRIGGER <name> with ON */
-	else if (Matches4("CREATE", "EVENT", "TRIGGER", MatchAny))
+	else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny))
 		COMPLETE_WITH_CONST("ON");
 	/* Complete CREATE EVENT TRIGGER <name> ON with event_type */
-	else if (Matches5("CREATE", "EVENT", "TRIGGER", MatchAny, "ON"))
+	else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny, "ON"))
 		COMPLETE_WITH_LIST3("ddl_command_start", "ddl_command_end", "sql_drop");
 
 /* DEALLOCATE */
-	else if (Matches1("DEALLOCATE"))
+	else if (Matches("DEALLOCATE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_prepared_statements);
 
 /* DECLARE */
-	else if (Matches2("DECLARE", MatchAny))
+	else if (Matches("DECLARE", MatchAny))
 		COMPLETE_WITH_LIST5("BINARY", "INSENSITIVE", "SCROLL", "NO SCROLL",
 							"CURSOR");
-	else if (HeadMatches1("DECLARE") && TailMatches1("CURSOR"))
+	else if (HeadMatches("DECLARE") && TailMatches("CURSOR"))
 		COMPLETE_WITH_LIST3("WITH HOLD", "WITHOUT HOLD", "FOR");
 
 /* DELETE --- can be inside EXPLAIN, RULE, etc */
 	/* ... despite which, only complete DELETE with FROM at start of line */
-	else if (Matches1("DELETE"))
+	else if (Matches("DELETE"))
 		COMPLETE_WITH_CONST("FROM");
 	/* Complete DELETE FROM with a list of tables */
-	else if (TailMatches2("DELETE", "FROM"))
+	else if (TailMatches("DELETE", "FROM"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables, NULL);
 	/* Complete DELETE FROM <table> */
-	else if (TailMatches3("DELETE", "FROM", MatchAny))
+	else if (TailMatches("DELETE", "FROM", MatchAny))
 		COMPLETE_WITH_LIST2("USING", "WHERE");
 	/* XXX: implement tab completion for DELETE ... USING */
 
 /* DISCARD */
-	else if (Matches1("DISCARD"))
+	else if (Matches("DISCARD"))
 		COMPLETE_WITH_LIST4("ALL", "PLANS", "SEQUENCES", "TEMP");
 
 /* DO */
-	else if (Matches1("DO"))
+	else if (Matches("DO"))
 		COMPLETE_WITH_CONST("LANGUAGE");
 
 /* DROP */
 	/* Complete DROP object with CASCADE / RESTRICT */
-	else if (Matches3("DROP",
+	else if (Matches("DROP",
 					  "COLLATION|CONVERSION|DOMAIN|EXTENSION|LANGUAGE|PUBLICATION|SCHEMA|SEQUENCE|SERVER|SUBSCRIPTION|STATISTICS|TABLE|TYPE|VIEW",
 					  MatchAny) ||
-			 Matches4("DROP", "ACCESS", "METHOD", MatchAny) ||
-			 (Matches4("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny) &&
+			 Matches("DROP", "ACCESS", "METHOD", MatchAny) ||
+			 (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny) &&
 			  ends_with(prev_wd, ')')) ||
-			 Matches4("DROP", "EVENT", "TRIGGER", MatchAny) ||
-			 Matches5("DROP", "FOREIGN", "DATA", "WRAPPER", MatchAny) ||
-			 Matches4("DROP", "FOREIGN", "TABLE", MatchAny) ||
-			 Matches5("DROP", "TEXT", "SEARCH", "CONFIGURATION|DICTIONARY|PARSER|TEMPLATE", MatchAny))
+			 Matches("DROP", "EVENT", "TRIGGER", MatchAny) ||
+			 Matches("DROP", "FOREIGN", "DATA", "WRAPPER", MatchAny) ||
+			 Matches("DROP", "FOREIGN", "TABLE", MatchAny) ||
+			 Matches("DROP", "TEXT", "SEARCH", "CONFIGURATION|DICTIONARY|PARSER|TEMPLATE", MatchAny))
 		COMPLETE_WITH_LIST2("CASCADE", "RESTRICT");
 
 	/* help completing some of the variants */
-	else if (Matches3("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
+	else if (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
 		COMPLETE_WITH_CONST("(");
-	else if (Matches4("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, "("))
+	else if (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, "("))
 		COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
-	else if (Matches2("DROP", "FOREIGN"))
+	else if (Matches("DROP", "FOREIGN"))
 		COMPLETE_WITH_LIST2("DATA WRAPPER", "TABLE");
 
 	/* DROP INDEX */
-	else if (Matches2("DROP", "INDEX"))
+	else if (Matches("DROP", "INDEX"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
 								   " UNION SELECT 'CONCURRENTLY'");
-	else if (Matches3("DROP", "INDEX", "CONCURRENTLY"))
+	else if (Matches("DROP", "INDEX", "CONCURRENTLY"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
-	else if (Matches3("DROP", "INDEX", MatchAny))
+	else if (Matches("DROP", "INDEX", MatchAny))
 		COMPLETE_WITH_LIST2("CASCADE", "RESTRICT");
-	else if (Matches4("DROP", "INDEX", "CONCURRENTLY", MatchAny))
+	else if (Matches("DROP", "INDEX", "CONCURRENTLY", MatchAny))
 		COMPLETE_WITH_LIST2("CASCADE", "RESTRICT");
 
 	/* DROP MATERIALIZED VIEW */
-	else if (Matches2("DROP", "MATERIALIZED"))
+	else if (Matches("DROP", "MATERIALIZED"))
 		COMPLETE_WITH_CONST("VIEW");
-	else if (Matches3("DROP", "MATERIALIZED", "VIEW"))
+	else if (Matches("DROP", "MATERIALIZED", "VIEW"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
 
 	/* DROP OWNED BY */
-	else if (Matches2("DROP", "OWNED"))
+	else if (Matches("DROP", "OWNED"))
 		COMPLETE_WITH_CONST("BY");
-	else if (Matches3("DROP", "OWNED", "BY"))
+	else if (Matches("DROP", "OWNED", "BY"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
 
 	/* DROP TEXT SEARCH */
-	else if (Matches3("DROP", "TEXT", "SEARCH"))
+	else if (Matches("DROP", "TEXT", "SEARCH"))
 		COMPLETE_WITH_LIST4("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
 
 	/* DROP TRIGGER */
-	else if (Matches3("DROP", "TRIGGER", MatchAny))
+	else if (Matches("DROP", "TRIGGER", MatchAny))
 		COMPLETE_WITH_CONST("ON");
-	else if (Matches4("DROP", "TRIGGER", MatchAny, "ON"))
+	else if (Matches("DROP", "TRIGGER", MatchAny, "ON"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_trigger);
 	}
-	else if (Matches5("DROP", "TRIGGER", MatchAny, "ON", MatchAny))
+	else if (Matches("DROP", "TRIGGER", MatchAny, "ON", MatchAny))
 		COMPLETE_WITH_LIST2("CASCADE", "RESTRICT");
 
 	/* DROP ACCESS METHOD */
-	else if (Matches2("DROP", "ACCESS"))
+	else if (Matches("DROP", "ACCESS"))
 		COMPLETE_WITH_CONST("METHOD");
-	else if (Matches3("DROP", "ACCESS", "METHOD"))
+	else if (Matches("DROP", "ACCESS", "METHOD"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
 
 	/* DROP EVENT TRIGGER */
-	else if (Matches2("DROP", "EVENT"))
+	else if (Matches("DROP", "EVENT"))
 		COMPLETE_WITH_CONST("TRIGGER");
-	else if (Matches3("DROP", "EVENT", "TRIGGER"))
+	else if (Matches("DROP", "EVENT", "TRIGGER"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
 
 	/* DROP POLICY <name>  */
-	else if (Matches2("DROP", "POLICY"))
+	else if (Matches("DROP", "POLICY"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_policies);
 	/* DROP POLICY <name> ON */
-	else if (Matches3("DROP", "POLICY", MatchAny))
+	else if (Matches("DROP", "POLICY", MatchAny))
 		COMPLETE_WITH_CONST("ON");
 	/* DROP POLICY <name> ON <table> */
-	else if (Matches4("DROP", "POLICY", MatchAny, "ON"))
+	else if (Matches("DROP", "POLICY", MatchAny, "ON"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_policy);
 	}
 
 	/* DROP RULE */
-	else if (Matches3("DROP", "RULE", MatchAny))
+	else if (Matches("DROP", "RULE", MatchAny))
 		COMPLETE_WITH_CONST("ON");
-	else if (Matches4("DROP", "RULE", MatchAny, "ON"))
+	else if (Matches("DROP", "RULE", MatchAny, "ON"))
 	{
 		completion_info_charp = prev2_wd;
 		COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_rule);
 	}
-	else if (Matches5("DROP", "RULE", MatchAny, "ON", MatchAny))
+	else if (Matches("DROP", "RULE", MatchAny, "ON", MatchAny))
 		COMPLETE_WITH_LIST2("CASCADE", "RESTRICT");
 
 /* EXECUTE */
-	else if (Matches1("EXECUTE"))
+	else if (Matches("EXECUTE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_prepared_statements);
 
 /* EXPLAIN */
@@ -2811,22 +2789,22 @@ psql_completion(const char *text, int start, int end)
 	/*
 	 * Complete EXPLAIN [ANALYZE] [VERBOSE] with list of EXPLAIN-able commands
 	 */
-	else if (Matches1("EXPLAIN"))
+	else if (Matches("EXPLAIN"))
 		COMPLETE_WITH_LIST7("SELECT", "INSERT", "DELETE", "UPDATE", "DECLARE",
 							"ANALYZE", "VERBOSE");
-	else if (Matches2("EXPLAIN", "ANALYZE"))
+	else if (Matches("EXPLAIN", "ANALYZE"))
 		COMPLETE_WITH_LIST6("SELECT", "INSERT", "DELETE", "UPDATE", "DECLARE",
 							"VERBOSE");
-	else if (Matches2("EXPLAIN", "VERBOSE") ||
-			 Matches3("EXPLAIN", "ANALYZE", "VERBOSE"))
+	else if (Matches("EXPLAIN", "VERBOSE") ||
+			 Matches("EXPLAIN", "ANALYZE", "VERBOSE"))
 		COMPLETE_WITH_LIST5("SELECT", "INSERT", "DELETE", "UPDATE", "DECLARE");
 
 /* FETCH && MOVE */
 	/* Complete FETCH with one of FORWARD, BACKWARD, RELATIVE */
-	else if (Matches1("FETCH|MOVE"))
+	else if (Matches("FETCH|MOVE"))
 		COMPLETE_WITH_LIST4("ABSOLUTE", "BACKWARD", "FORWARD", "RELATIVE");
 	/* Complete FETCH <sth> with one of ALL, NEXT, PRIOR */
-	else if (Matches2("FETCH|MOVE", MatchAny))
+	else if (Matches("FETCH|MOVE", MatchAny))
 		COMPLETE_WITH_LIST3("ALL", "NEXT", "PRIOR");
 
 	/*
@@ -2834,26 +2812,26 @@ psql_completion(const char *text, int start, int end)
 	 * but we may as well tab-complete both: perhaps some users prefer one
 	 * variant or the other.
 	 */
-	else if (Matches3("FETCH|MOVE", MatchAny, MatchAny))
+	else if (Matches("FETCH|MOVE", MatchAny, MatchAny))
 		COMPLETE_WITH_LIST2("FROM", "IN");
 
 /* FOREIGN DATA WRAPPER */
 	/* applies in ALTER/DROP FDW and in CREATE SERVER */
-	else if (TailMatches3("FOREIGN", "DATA", "WRAPPER") &&
-			 !TailMatches4("CREATE", MatchAny, MatchAny, MatchAny))
+	else if (TailMatches("FOREIGN", "DATA", "WRAPPER") &&
+			 !TailMatches("CREATE", MatchAny, MatchAny, MatchAny))
 		COMPLETE_WITH_QUERY(Query_for_list_of_fdws);
 	/* applies in CREATE SERVER */
-	else if (TailMatches4("FOREIGN", "DATA", "WRAPPER", MatchAny) &&
-			 HeadMatches2("CREATE", "SERVER"))
+	else if (TailMatches("FOREIGN", "DATA", "WRAPPER", MatchAny) &&
+			 HeadMatches("CREATE", "SERVER"))
 		COMPLETE_WITH_CONST("OPTIONS");
 
 /* FOREIGN TABLE */
-	else if (TailMatches2("FOREIGN", "TABLE") &&
-			 !TailMatches3("CREATE", MatchAny, MatchAny))
+	else if (TailMatches("FOREIGN", "TABLE") &&
+			 !TailMatches("CREATE", MatchAny, MatchAny))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_foreign_tables, NULL);
 
 /* FOREIGN SERVER */
-	else if (TailMatches2("FOREIGN", "SERVER"))
+	else if (TailMatches("FOREIGN", "SERVER"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_servers);
 
 /*
@@ -2861,13 +2839,13 @@ psql_completion(const char *text, int start, int end)
  * ALTER DEFAULT PRIVILEGES, so use TailMatches
  */
 	/* Complete GRANT/REVOKE with a list of roles and privileges */
-	else if (TailMatches1("GRANT|REVOKE"))
+	else if (TailMatches("GRANT|REVOKE"))
 	{
 		/*
 		 * With ALTER DEFAULT PRIVILEGES, restrict completion to grantable
 		 * privileges (can't grant roles)
 		 */
-		if (HeadMatches3("ALTER", "DEFAULT", "PRIVILEGES"))
+		if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
 			COMPLETE_WITH_LIST10("SELECT", "INSERT", "UPDATE",
 								 "DELETE", "TRUNCATE", "REFERENCES", "TRIGGER",
 								 "EXECUTE", "USAGE", "ALL");
@@ -2892,11 +2870,11 @@ psql_completion(const char *text, int start, int end)
 	 * Complete GRANT/REVOKE <privilege> with "ON", GRANT/REVOKE <role> with
 	 * TO/FROM
 	 */
-	else if (TailMatches2("GRANT|REVOKE", MatchAny))
+	else if (TailMatches("GRANT|REVOKE", MatchAny))
 	{
-		if (TailMatches1("SELECT|INSERT|UPDATE|DELETE|TRUNCATE|REFERENCES|TRIGGER|CREATE|CONNECT|TEMPORARY|TEMP|EXECUTE|USAGE|ALL"))
+		if (TailMatches("SELECT|INSERT|UPDATE|DELETE|TRUNCATE|REFERENCES|TRIGGER|CREATE|CONNECT|TEMPORARY|TEMP|EXECUTE|USAGE|ALL"))
 			COMPLETE_WITH_CONST("ON");
-		else if (TailMatches2("GRANT", MatchAny))
+		else if (TailMatches("GRANT", MatchAny))
 			COMPLETE_WITH_CONST("TO");
 		else
 			COMPLETE_WITH_CONST("FROM");
@@ -2913,13 +2891,13 @@ psql_completion(const char *text, int start, int end)
 	 * here will only work if the privilege list contains exactly one
 	 * privilege.
 	 */
-	else if (TailMatches3("GRANT|REVOKE", MatchAny, "ON"))
+	else if (TailMatches("GRANT|REVOKE", MatchAny, "ON"))
 	{
 		/*
 		 * With ALTER DEFAULT PRIVILEGES, restrict completion to the kinds of
 		 * objects supported.
 		 */
-		if (HeadMatches3("ALTER", "DEFAULT", "PRIVILEGES"))
+		if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
 			COMPLETE_WITH_LIST7("TABLES", "SEQUENCES", "FUNCTIONS", "PROCEDURES", "ROUTINES", "TYPES", "SCHEMAS");
 		else
 			COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tsvmf,
@@ -2943,13 +2921,13 @@ psql_completion(const char *text, int start, int end)
 									   " UNION SELECT 'TABLESPACE'"
 									   " UNION SELECT 'TYPE'");
 	}
-	else if (TailMatches4("GRANT|REVOKE", MatchAny, "ON", "ALL"))
+	else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "ALL"))
 		COMPLETE_WITH_LIST5("FUNCTIONS IN SCHEMA",
 							"PROCEDURES IN SCHEMA",
 							"ROUTINES IN SCHEMA",
 							"SEQUENCES IN SCHEMA",
 							"TABLES IN SCHEMA");
-	else if (TailMatches4("GRANT|REVOKE", MatchAny, "ON", "FOREIGN"))
+	else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN"))
 		COMPLETE_WITH_LIST2("DATA WRAPPER", "SERVER");
 
 	/*
@@ -2958,31 +2936,31 @@ psql_completion(const char *text, int start, int end)
 	 *
 	 * Complete "GRANT/REVOKE * ON *" with "TO/FROM".
 	 */
-	else if (TailMatches4("GRANT|REVOKE", MatchAny, "ON", MatchAny))
+	else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", MatchAny))
 	{
-		if (TailMatches1("DATABASE"))
+		if (TailMatches("DATABASE"))
 			COMPLETE_WITH_QUERY(Query_for_list_of_databases);
-		else if (TailMatches1("DOMAIN"))
+		else if (TailMatches("DOMAIN"))
 			COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_domains, NULL);
-		else if (TailMatches1("FUNCTION"))
+		else if (TailMatches("FUNCTION"))
 			COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
-		else if (TailMatches1("LANGUAGE"))
+		else if (TailMatches("LANGUAGE"))
 			COMPLETE_WITH_QUERY(Query_for_list_of_languages);
-		else if (TailMatches1("PROCEDURE"))
+		else if (TailMatches("PROCEDURE"))
 			COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_procedures, NULL);
-		else if (TailMatches1("ROUTINE"))
+		else if (TailMatches("ROUTINE"))
 			COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines, NULL);
-		else if (TailMatches1("SCHEMA"))
+		else if (TailMatches("SCHEMA"))
 			COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
-		else if (TailMatches1("SEQUENCE"))
+		else if (TailMatches("SEQUENCE"))
 			COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_sequences, NULL);
-		else if (TailMatches1("TABLE"))
+		else if (TailMatches("TABLE"))
 			COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tsvmf, NULL);
-		else if (TailMatches1("TABLESPACE"))
+		else if (TailMatches("TABLESPACE"))
 			COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
-		else if (TailMatches1("TYPE"))
+		else if (TailMatches("TYPE"))
 			COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes, NULL);
-		else if (TailMatches4("GRANT", MatchAny, MatchAny, MatchAny))
+		else if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny))
 			COMPLETE_WITH_CONST("TO");
 		else
 			COMPLETE_WITH_CONST("FROM");
@@ -2992,111 +2970,111 @@ psql_completion(const char *text, int start, int end)
 	 * Complete "GRANT/REVOKE ... TO/FROM" with username, PUBLIC,
 	 * CURRENT_USER, or SESSION_USER.
 	 */
-	else if ((HeadMatches1("GRANT") && TailMatches1("TO")) ||
-			 (HeadMatches1("REVOKE") && TailMatches1("FROM")))
+	else if ((HeadMatches("GRANT") && TailMatches("TO")) ||
+			 (HeadMatches("REVOKE") && TailMatches("FROM")))
 		COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
 	/* Complete "ALTER DEFAULT PRIVILEGES ... GRANT/REVOKE ... TO/FROM */
-	else if (HeadMatches3("ALTER", "DEFAULT", "PRIVILEGES") && TailMatches1("TO|FROM"))
+	else if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES") && TailMatches("TO|FROM"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
 	/* Complete "GRANT/REVOKE ... ON * *" with TO/FROM */
-	else if (HeadMatches1("GRANT") && TailMatches3("ON", MatchAny, MatchAny))
+	else if (HeadMatches("GRANT") && TailMatches("ON", MatchAny, MatchAny))
 		COMPLETE_WITH_CONST("TO");
-	else if (HeadMatches1("REVOKE") && TailMatches3("ON", MatchAny, MatchAny))
+	else if (HeadMatches("REVOKE") && TailMatches("ON", MatchAny, MatchAny))
 		COMPLETE_WITH_CONST("FROM");
 
 	/* Complete "GRANT/REVOKE * ON ALL * IN SCHEMA *" with TO/FROM */
-	else if (TailMatches8("GRANT|REVOKE", MatchAny, "ON", "ALL", MatchAny, "IN", "SCHEMA", MatchAny))
+	else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "ALL", MatchAny, "IN", "SCHEMA", MatchAny))
 	{
-		if (TailMatches8("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
+		if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
 			COMPLETE_WITH_CONST("TO");
 		else
 			COMPLETE_WITH_CONST("FROM");
 	}
 
 	/* Complete "GRANT/REVOKE * ON FOREIGN DATA WRAPPER *" with TO/FROM */
-	else if (TailMatches7("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "DATA", "WRAPPER", MatchAny))
+	else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "DATA", "WRAPPER", MatchAny))
 	{
-		if (TailMatches7("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
+		if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
 			COMPLETE_WITH_CONST("TO");
 		else
 			COMPLETE_WITH_CONST("FROM");
 	}
 
 	/* Complete "GRANT/REVOKE * ON FOREIGN SERVER *" with TO/FROM */
-	else if (TailMatches6("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "SERVER", MatchAny))
+	else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "SERVER", MatchAny))
 	{
-		if (TailMatches6("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
+		if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
 			COMPLETE_WITH_CONST("TO");
 		else
 			COMPLETE_WITH_CONST("FROM");
 	}
 
 /* GROUP BY */
-	else if (TailMatches3("FROM", MatchAny, "GROUP"))
+	else if (TailMatches("FROM", MatchAny, "GROUP"))
 		COMPLETE_WITH_CONST("BY");
 
 /* IMPORT FOREIGN SCHEMA */
-	else if (Matches1("IMPORT"))
+	else if (Matches("IMPORT"))
 		COMPLETE_WITH_CONST("FOREIGN SCHEMA");
-	else if (Matches2("IMPORT", "FOREIGN"))
+	else if (Matches("IMPORT", "FOREIGN"))
 		COMPLETE_WITH_CONST("SCHEMA");
 
 /* INSERT --- can be inside EXPLAIN, RULE, etc */
 	/* Complete INSERT with "INTO" */
-	else if (TailMatches1("INSERT"))
+	else if (TailMatches("INSERT"))
 		COMPLETE_WITH_CONST("INTO");
 	/* Complete INSERT INTO with table names */
-	else if (TailMatches2("INSERT", "INTO"))
+	else if (TailMatches("INSERT", "INTO"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables, NULL);
 	/* Complete "INSERT INTO <table> (" with attribute names */
-	else if (TailMatches4("INSERT", "INTO", MatchAny, "("))
+	else if (TailMatches("INSERT", "INTO", MatchAny, "("))
 		COMPLETE_WITH_ATTR(prev2_wd, "");
 
 	/*
 	 * Complete INSERT INTO <table> with "(" or "VALUES" or "SELECT" or
 	 * "TABLE" or "DEFAULT VALUES" or "OVERRIDING"
 	 */
-	else if (TailMatches3("INSERT", "INTO", MatchAny))
+	else if (TailMatches("INSERT", "INTO", MatchAny))
 		COMPLETE_WITH_LIST6("(", "DEFAULT VALUES", "SELECT", "TABLE", "VALUES", "OVERRIDING");
 
 	/*
 	 * Complete INSERT INTO <table> (attribs) with "VALUES" or "SELECT" or
 	 * "TABLE" or "OVERRIDING"
 	 */
-	else if (TailMatches4("INSERT", "INTO", MatchAny, MatchAny) &&
+	else if (TailMatches("INSERT", "INTO", MatchAny, MatchAny) &&
 			 ends_with(prev_wd, ')'))
 		COMPLETE_WITH_LIST4("SELECT", "TABLE", "VALUES", "OVERRIDING");
 
 	/* Complete OVERRIDING */
-	else if (TailMatches1("OVERRIDING"))
+	else if (TailMatches("OVERRIDING"))
 		COMPLETE_WITH_LIST2("SYSTEM VALUE", "USER VALUE");
 
 	/* Complete after OVERRIDING clause */
-	else if (TailMatches3("OVERRIDING", MatchAny, "VALUE"))
+	else if (TailMatches("OVERRIDING", MatchAny, "VALUE"))
 		COMPLETE_WITH_LIST3("SELECT", "TABLE", "VALUES");
 
 	/* Insert an open parenthesis after "VALUES" */
-	else if (TailMatches1("VALUES") && !TailMatches2("DEFAULT", "VALUES"))
+	else if (TailMatches("VALUES") && !TailMatches("DEFAULT", "VALUES"))
 		COMPLETE_WITH_CONST("(");
 
 /* LOCK */
 	/* Complete LOCK [TABLE] with a list of tables */
-	else if (Matches1("LOCK"))
+	else if (Matches("LOCK"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables,
 								   " UNION SELECT 'TABLE'");
-	else if (Matches2("LOCK", "TABLE"))
+	else if (Matches("LOCK", "TABLE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
 
 	/* For the following, handle the case of a single table only for now */
 
 	/* Complete LOCK [TABLE] <table> with "IN" */
-	else if (Matches2("LOCK", MatchAnyExcept("TABLE")) ||
-			 Matches3("LOCK", "TABLE", MatchAny))
+	else if (Matches("LOCK", MatchAnyExcept("TABLE")) ||
+			 Matches("LOCK", "TABLE", MatchAny))
 		COMPLETE_WITH_CONST("IN");
 
 	/* Complete LOCK [TABLE] <table> IN with a lock mode */
-	else if (Matches3("LOCK", MatchAny, "IN") ||
-			 Matches4("LOCK", "TABLE", MatchAny, "IN"))
+	else if (Matches("LOCK", MatchAny, "IN") ||
+			 Matches("LOCK", "TABLE", MatchAny, "IN"))
 		COMPLETE_WITH_LIST8("ACCESS SHARE MODE",
 							"ROW SHARE MODE", "ROW EXCLUSIVE MODE",
 							"SHARE UPDATE EXCLUSIVE MODE", "SHARE MODE",
@@ -3104,36 +3082,36 @@ psql_completion(const char *text, int start, int end)
 							"EXCLUSIVE MODE", "ACCESS EXCLUSIVE MODE");
 
 	/* Complete LOCK [TABLE] <table> IN ACCESS|ROW with rest of lock mode */
-	else if (Matches4("LOCK", MatchAny, "IN", "ACCESS|ROW") ||
-			 Matches5("LOCK", "TABLE", MatchAny, "IN", "ACCESS|ROW"))
+	else if (Matches("LOCK", MatchAny, "IN", "ACCESS|ROW") ||
+			 Matches("LOCK", "TABLE", MatchAny, "IN", "ACCESS|ROW"))
 		COMPLETE_WITH_LIST2("EXCLUSIVE MODE", "SHARE MODE");
 
 	/* Complete LOCK [TABLE] <table> IN SHARE with rest of lock mode */
-	else if (Matches4("LOCK", MatchAny, "IN", "SHARE") ||
-			 Matches5("LOCK", "TABLE", MatchAny, "IN", "SHARE"))
+	else if (Matches("LOCK", MatchAny, "IN", "SHARE") ||
+			 Matches("LOCK", "TABLE", MatchAny, "IN", "SHARE"))
 		COMPLETE_WITH_LIST3("MODE", "ROW EXCLUSIVE MODE",
 							"UPDATE EXCLUSIVE MODE");
 
 /* NOTIFY --- can be inside EXPLAIN, RULE, etc */
-	else if (TailMatches1("NOTIFY"))
+	else if (TailMatches("NOTIFY"))
 		COMPLETE_WITH_QUERY("SELECT pg_catalog.quote_ident(channel) FROM pg_catalog.pg_listening_channels() AS channel WHERE substring(pg_catalog.quote_ident(channel),1,%d)='%s'");
 
 /* OPTIONS */
-	else if (TailMatches1("OPTIONS"))
+	else if (TailMatches("OPTIONS"))
 		COMPLETE_WITH_CONST("(");
 
 /* OWNER TO  - complete with available roles */
-	else if (TailMatches2("OWNER", "TO"))
+	else if (TailMatches("OWNER", "TO"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
 
 /* ORDER BY */
-	else if (TailMatches3("FROM", MatchAny, "ORDER"))
+	else if (TailMatches("FROM", MatchAny, "ORDER"))
 		COMPLETE_WITH_CONST("BY");
-	else if (TailMatches4("FROM", MatchAny, "ORDER", "BY"))
+	else if (TailMatches("FROM", MatchAny, "ORDER", "BY"))
 		COMPLETE_WITH_ATTR(prev3_wd, "");
 
 /* PREPARE xx AS */
-	else if (Matches3("PREPARE", MatchAny, "AS"))
+	else if (Matches("PREPARE", MatchAny, "AS"))
 		COMPLETE_WITH_LIST4("SELECT", "UPDATE", "INSERT", "DELETE FROM");
 
 /*
@@ -3142,61 +3120,61 @@ psql_completion(const char *text, int start, int end)
  */
 
 /* REASSIGN OWNED BY xxx TO yyy */
-	else if (Matches1("REASSIGN"))
+	else if (Matches("REASSIGN"))
 		COMPLETE_WITH_CONST("OWNED BY");
-	else if (Matches2("REASSIGN", "OWNED"))
+	else if (Matches("REASSIGN", "OWNED"))
 		COMPLETE_WITH_CONST("BY");
-	else if (Matches3("REASSIGN", "OWNED", "BY"))
+	else if (Matches("REASSIGN", "OWNED", "BY"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
-	else if (Matches4("REASSIGN", "OWNED", "BY", MatchAny))
+	else if (Matches("REASSIGN", "OWNED", "BY", MatchAny))
 		COMPLETE_WITH_CONST("TO");
-	else if (Matches5("REASSIGN", "OWNED", "BY", MatchAny, "TO"))
+	else if (Matches("REASSIGN", "OWNED", "BY", MatchAny, "TO"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
 
 /* REFRESH MATERIALIZED VIEW */
-	else if (Matches1("REFRESH"))
+	else if (Matches("REFRESH"))
 		COMPLETE_WITH_CONST("MATERIALIZED VIEW");
-	else if (Matches2("REFRESH", "MATERIALIZED"))
+	else if (Matches("REFRESH", "MATERIALIZED"))
 		COMPLETE_WITH_CONST("VIEW");
-	else if (Matches3("REFRESH", "MATERIALIZED", "VIEW"))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews,
 								   " UNION SELECT 'CONCURRENTLY'");
-	else if (Matches4("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY"))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
-	else if (Matches4("REFRESH", "MATERIALIZED", "VIEW", MatchAny))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny))
 		COMPLETE_WITH_CONST("WITH");
-	else if (Matches5("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny))
 		COMPLETE_WITH_CONST("WITH");
-	else if (Matches5("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH"))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH"))
 		COMPLETE_WITH_LIST2("NO DATA", "DATA");
-	else if (Matches6("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH"))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH"))
 		COMPLETE_WITH_LIST2("NO DATA", "DATA");
-	else if (Matches6("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH", "NO"))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH", "NO"))
 		COMPLETE_WITH_CONST("DATA");
-	else if (Matches7("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH", "NO"))
+	else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH", "NO"))
 		COMPLETE_WITH_CONST("DATA");
 
 /* REINDEX */
-	else if (Matches1("REINDEX"))
+	else if (Matches("REINDEX"))
 		COMPLETE_WITH_LIST5("TABLE", "INDEX", "SYSTEM", "SCHEMA", "DATABASE");
-	else if (Matches2("REINDEX", "TABLE"))
+	else if (Matches("REINDEX", "TABLE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm, NULL);
-	else if (Matches2("REINDEX", "INDEX"))
+	else if (Matches("REINDEX", "INDEX"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
-	else if (Matches2("REINDEX", "SCHEMA"))
+	else if (Matches("REINDEX", "SCHEMA"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
-	else if (Matches2("REINDEX", "SYSTEM|DATABASE"))
+	else if (Matches("REINDEX", "SYSTEM|DATABASE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_databases);
 
 /* SECURITY LABEL */
-	else if (Matches1("SECURITY"))
+	else if (Matches("SECURITY"))
 		COMPLETE_WITH_CONST("LABEL");
-	else if (Matches2("SECURITY", "LABEL"))
+	else if (Matches("SECURITY", "LABEL"))
 		COMPLETE_WITH_LIST2("ON", "FOR");
-	else if (Matches4("SECURITY", "LABEL", "FOR", MatchAny))
+	else if (Matches("SECURITY", "LABEL", "FOR", MatchAny))
 		COMPLETE_WITH_CONST("ON");
-	else if (Matches3("SECURITY", "LABEL", "ON") ||
-			 Matches5("SECURITY", "LABEL", "FOR", MatchAny, "ON"))
+	else if (Matches("SECURITY", "LABEL", "ON") ||
+			 Matches("SECURITY", "LABEL", "FOR", MatchAny, "ON"))
 	{
 		static const char *const list_SECURITY_LABEL[] =
 		{"TABLE", "COLUMN", "AGGREGATE", "DATABASE", "DOMAIN",
@@ -3206,7 +3184,7 @@ psql_completion(const char *text, int start, int end)
 
 		COMPLETE_WITH_LIST(list_SECURITY_LABEL);
 	}
-	else if (Matches5("SECURITY", "LABEL", "ON", MatchAny, MatchAny))
+	else if (Matches("SECURITY", "LABEL", "ON", MatchAny, MatchAny))
 		COMPLETE_WITH_CONST("IS");
 
 /* SELECT */
@@ -3214,76 +3192,76 @@ psql_completion(const char *text, int start, int end)
 
 /* SET, RESET, SHOW */
 	/* Complete with a variable name */
-	else if (TailMatches1("SET|RESET") && !TailMatches3("UPDATE", MatchAny, "SET"))
+	else if (TailMatches("SET|RESET") && !TailMatches("UPDATE", MatchAny, "SET"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_set_vars);
-	else if (Matches1("SHOW"))
+	else if (Matches("SHOW"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_show_vars);
 	/* Complete "SET TRANSACTION" */
-	else if (Matches2("SET", "TRANSACTION"))
+	else if (Matches("SET", "TRANSACTION"))
 		COMPLETE_WITH_LIST5("SNAPSHOT", "ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
-	else if (Matches2("BEGIN|START", "TRANSACTION") ||
-			 Matches2("BEGIN", "WORK") ||
-			 Matches1("BEGIN") ||
-			 Matches5("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION"))
+	else if (Matches("BEGIN|START", "TRANSACTION") ||
+			 Matches("BEGIN", "WORK") ||
+			 Matches("BEGIN") ||
+			 Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION"))
 		COMPLETE_WITH_LIST4("ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
-	else if (Matches3("SET|BEGIN|START", "TRANSACTION|WORK", "NOT") ||
-			 Matches2("BEGIN", "NOT") ||
-			 Matches6("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "NOT"))
+	else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "NOT") ||
+			 Matches("BEGIN", "NOT") ||
+			 Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "NOT"))
 		COMPLETE_WITH_CONST("DEFERRABLE");
-	else if (Matches3("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION") ||
-			 Matches2("BEGIN", "ISOLATION") ||
-			 Matches6("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION"))
+	else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION") ||
+			 Matches("BEGIN", "ISOLATION") ||
+			 Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION"))
 		COMPLETE_WITH_CONST("LEVEL");
-	else if (Matches4("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL") ||
-			 Matches3("BEGIN", "ISOLATION", "LEVEL") ||
-			 Matches7("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL"))
+	else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL") ||
+			 Matches("BEGIN", "ISOLATION", "LEVEL") ||
+			 Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL"))
 		COMPLETE_WITH_LIST3("READ", "REPEATABLE READ", "SERIALIZABLE");
-	else if (Matches5("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "READ") ||
-			 Matches4("BEGIN", "ISOLATION", "LEVEL", "READ") ||
-			 Matches8("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "READ"))
+	else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "READ") ||
+			 Matches("BEGIN", "ISOLATION", "LEVEL", "READ") ||
+			 Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "READ"))
 		COMPLETE_WITH_LIST2("UNCOMMITTED", "COMMITTED");
-	else if (Matches5("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "REPEATABLE") ||
-			 Matches4("BEGIN", "ISOLATION", "LEVEL", "REPEATABLE") ||
-			 Matches8("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "REPEATABLE"))
+	else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "REPEATABLE") ||
+			 Matches("BEGIN", "ISOLATION", "LEVEL", "REPEATABLE") ||
+			 Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "REPEATABLE"))
 		COMPLETE_WITH_CONST("READ");
-	else if (Matches3("SET|BEGIN|START", "TRANSACTION|WORK", "READ") ||
-			 Matches2("BEGIN", "READ") ||
-			 Matches6("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "READ"))
+	else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "READ") ||
+			 Matches("BEGIN", "READ") ||
+			 Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "READ"))
 		COMPLETE_WITH_LIST2("ONLY", "WRITE");
 	/* SET CONSTRAINTS */
-	else if (Matches2("SET", "CONSTRAINTS"))
+	else if (Matches("SET", "CONSTRAINTS"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_constraints_with_schema, "UNION SELECT 'ALL'");
 	/* Complete SET CONSTRAINTS <foo> with DEFERRED|IMMEDIATE */
-	else if (Matches3("SET", "CONSTRAINTS", MatchAny))
+	else if (Matches("SET", "CONSTRAINTS", MatchAny))
 		COMPLETE_WITH_LIST2("DEFERRED", "IMMEDIATE");
 	/* Complete SET ROLE */
-	else if (Matches2("SET", "ROLE"))
+	else if (Matches("SET", "ROLE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
 	/* Complete SET SESSION with AUTHORIZATION or CHARACTERISTICS... */
-	else if (Matches2("SET", "SESSION"))
+	else if (Matches("SET", "SESSION"))
 		COMPLETE_WITH_LIST2("AUTHORIZATION", "CHARACTERISTICS AS TRANSACTION");
 	/* Complete SET SESSION AUTHORIZATION with username */
-	else if (Matches3("SET", "SESSION", "AUTHORIZATION"))
+	else if (Matches("SET", "SESSION", "AUTHORIZATION"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles " UNION SELECT 'DEFAULT'");
 	/* Complete RESET SESSION with AUTHORIZATION */
-	else if (Matches2("RESET", "SESSION"))
+	else if (Matches("RESET", "SESSION"))
 		COMPLETE_WITH_CONST("AUTHORIZATION");
 	/* Complete SET <var> with "TO" */
-	else if (Matches2("SET", MatchAny))
+	else if (Matches("SET", MatchAny))
 		COMPLETE_WITH_CONST("TO");
 
 	/*
 	 * Complete ALTER DATABASE|FUNCTION||PROCEDURE|ROLE|ROUTINE|USER ... SET
 	 * <name>
 	 */
-	else if (HeadMatches2("ALTER", "DATABASE|FUNCTION|PROCEDURE|ROLE|ROUTINE|USER") &&
-			 TailMatches2("SET", MatchAny))
+	else if (HeadMatches("ALTER", "DATABASE|FUNCTION|PROCEDURE|ROLE|ROUTINE|USER") &&
+			 TailMatches("SET", MatchAny))
 		COMPLETE_WITH_LIST2("FROM CURRENT", "TO");
 	/* Suggest possible variable values */
-	else if (TailMatches3("SET", MatchAny, "TO|="))
+	else if (TailMatches("SET", MatchAny, "TO|="))
 	{
 		/* special cased code for individual GUCs */
-		if (TailMatches2("DateStyle", "TO|="))
+		if (TailMatches("DateStyle", "TO|="))
 		{
 			static const char *const my_list[] =
 			{"ISO", "SQL", "Postgres", "German",
@@ -3293,7 +3271,7 @@ psql_completion(const char *text, int start, int end)
 
 			COMPLETE_WITH_LIST(my_list);
 		}
-		else if (TailMatches2("search_path", "TO|="))
+		else if (TailMatches("search_path", "TO|="))
 			COMPLETE_WITH_QUERY(Query_for_list_of_schemas
 								" AND nspname not like 'pg\\_toast%%' "
 								" AND nspname not like 'pg\\_temp%%' "
@@ -3322,83 +3300,83 @@ psql_completion(const char *text, int start, int end)
 	}
 
 /* START TRANSACTION */
-	else if (Matches1("START"))
+	else if (Matches("START"))
 		COMPLETE_WITH_CONST("TRANSACTION");
 
 /* TABLE, but not TABLE embedded in other commands */
-	else if (Matches1("TABLE"))
+	else if (Matches("TABLE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tsvmf, NULL);
 
 /* TABLESAMPLE */
-	else if (TailMatches1("TABLESAMPLE"))
+	else if (TailMatches("TABLESAMPLE"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_tablesample_methods);
-	else if (TailMatches2("TABLESAMPLE", MatchAny))
+	else if (TailMatches("TABLESAMPLE", MatchAny))
 		COMPLETE_WITH_CONST("(");
 
 /* TRUNCATE */
-	else if (Matches1("TRUNCATE"))
+	else if (Matches("TRUNCATE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
 
 /* UNLISTEN */
-	else if (Matches1("UNLISTEN"))
+	else if (Matches("UNLISTEN"))
 		COMPLETE_WITH_QUERY("SELECT pg_catalog.quote_ident(channel) FROM pg_catalog.pg_listening_channels() AS channel WHERE substring(pg_catalog.quote_ident(channel),1,%d)='%s' UNION SELECT '*'");
 
 /* UPDATE --- can be inside EXPLAIN, RULE, etc */
 	/* If prev. word is UPDATE suggest a list of tables */
-	else if (TailMatches1("UPDATE"))
+	else if (TailMatches("UPDATE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables, NULL);
 	/* Complete UPDATE <table> with "SET" */
-	else if (TailMatches2("UPDATE", MatchAny))
+	else if (TailMatches("UPDATE", MatchAny))
 		COMPLETE_WITH_CONST("SET");
 	/* Complete UPDATE <table> SET with list of attributes */
-	else if (TailMatches3("UPDATE", MatchAny, "SET"))
+	else if (TailMatches("UPDATE", MatchAny, "SET"))
 		COMPLETE_WITH_ATTR(prev2_wd, "");
 	/* UPDATE <table> SET <attr> = */
-	else if (TailMatches4("UPDATE", MatchAny, "SET", MatchAny))
+	else if (TailMatches("UPDATE", MatchAny, "SET", MatchAny))
 		COMPLETE_WITH_CONST("=");
 
 /* USER MAPPING */
-	else if (Matches3("ALTER|CREATE|DROP", "USER", "MAPPING"))
+	else if (Matches("ALTER|CREATE|DROP", "USER", "MAPPING"))
 		COMPLETE_WITH_CONST("FOR");
-	else if (Matches4("CREATE", "USER", "MAPPING", "FOR"))
+	else if (Matches("CREATE", "USER", "MAPPING", "FOR"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles
 							" UNION SELECT 'CURRENT_USER'"
 							" UNION SELECT 'PUBLIC'"
 							" UNION SELECT 'USER'");
-	else if (Matches4("ALTER|DROP", "USER", "MAPPING", "FOR"))
+	else if (Matches("ALTER|DROP", "USER", "MAPPING", "FOR"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_user_mappings);
-	else if (Matches5("CREATE|ALTER|DROP", "USER", "MAPPING", "FOR", MatchAny))
+	else if (Matches("CREATE|ALTER|DROP", "USER", "MAPPING", "FOR", MatchAny))
 		COMPLETE_WITH_CONST("SERVER");
-	else if (Matches7("CREATE|ALTER", "USER", "MAPPING", "FOR", MatchAny, "SERVER", MatchAny))
+	else if (Matches("CREATE|ALTER", "USER", "MAPPING", "FOR", MatchAny, "SERVER", MatchAny))
 		COMPLETE_WITH_CONST("OPTIONS");
 
 /*
  * VACUUM [ FULL | FREEZE ] [ VERBOSE ] [ table ]
  * VACUUM [ FULL | FREEZE ] [ VERBOSE ] ANALYZE [ table [ (column [, ...] ) ] ]
  */
-	else if (Matches1("VACUUM"))
+	else if (Matches("VACUUM"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm,
 								   " UNION SELECT 'FULL'"
 								   " UNION SELECT 'FREEZE'"
 								   " UNION SELECT 'ANALYZE'"
 								   " UNION SELECT 'VERBOSE'");
-	else if (Matches2("VACUUM", "FULL|FREEZE"))
+	else if (Matches("VACUUM", "FULL|FREEZE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm,
 								   " UNION SELECT 'ANALYZE'"
 								   " UNION SELECT 'VERBOSE'");
-	else if (Matches3("VACUUM", "FULL|FREEZE", "ANALYZE"))
+	else if (Matches("VACUUM", "FULL|FREEZE", "ANALYZE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm,
 								   " UNION SELECT 'VERBOSE'");
-	else if (Matches3("VACUUM", "FULL|FREEZE", "VERBOSE"))
+	else if (Matches("VACUUM", "FULL|FREEZE", "VERBOSE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm,
 								   " UNION SELECT 'ANALYZE'");
-	else if (Matches2("VACUUM", "VERBOSE"))
+	else if (Matches("VACUUM", "VERBOSE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm,
 								   " UNION SELECT 'ANALYZE'");
-	else if (Matches2("VACUUM", "ANALYZE"))
+	else if (Matches("VACUUM", "ANALYZE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm,
 								   " UNION SELECT 'VERBOSE'");
-	else if (HeadMatches1("VACUUM"))
+	else if (HeadMatches("VACUUM"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tm, NULL);
 
 /* WITH [RECURSIVE] */
@@ -3407,114 +3385,114 @@ psql_completion(const char *text, int start, int end)
 	 * Only match when WITH is the first word, as WITH may appear in many
 	 * other contexts.
 	 */
-	else if (Matches1("WITH"))
+	else if (Matches("WITH"))
 		COMPLETE_WITH_CONST("RECURSIVE");
 
 /* ANALYZE */
 	/* Complete with list of tables */
-	else if (Matches1("ANALYZE"))
+	else if (Matches("ANALYZE"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tmf, NULL);
 
 /* WHERE */
 	/* Simple case of the word before the where being the table name */
-	else if (TailMatches2(MatchAny, "WHERE"))
+	else if (TailMatches(MatchAny, "WHERE"))
 		COMPLETE_WITH_ATTR(prev2_wd, "");
 
 /* ... FROM ... */
 /* TODO: also include SRF ? */
-	else if (TailMatches1("FROM") && !Matches3("COPY|\\copy", MatchAny, "FROM"))
+	else if (TailMatches("FROM") && !Matches("COPY|\\copy", MatchAny, "FROM"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tsvmf, NULL);
 
 /* ... JOIN ... */
-	else if (TailMatches1("JOIN"))
+	else if (TailMatches("JOIN"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tsvmf, NULL);
 
 /* Backslash commands */
 /* TODO:  \dc \dd \dl */
-	else if (TailMatchesCS1("\\?"))
+	else if (TailMatchesCS("\\?"))
 		COMPLETE_WITH_LIST_CS3("commands", "options", "variables");
-	else if (TailMatchesCS1("\\connect|\\c"))
+	else if (TailMatchesCS("\\connect|\\c"))
 	{
 		if (!recognized_connection_string(text))
 			COMPLETE_WITH_QUERY(Query_for_list_of_databases);
 	}
-	else if (TailMatchesCS2("\\connect|\\c", MatchAny))
+	else if (TailMatchesCS("\\connect|\\c", MatchAny))
 	{
 		if (!recognized_connection_string(prev_wd))
 			COMPLETE_WITH_QUERY(Query_for_list_of_roles);
 	}
-	else if (TailMatchesCS1("\\da*"))
+	else if (TailMatchesCS("\\da*"))
 		COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_aggregates, NULL);
-	else if (TailMatchesCS1("\\dA*"))
+	else if (TailMatchesCS("\\dA*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
-	else if (TailMatchesCS1("\\db*"))
+	else if (TailMatchesCS("\\db*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
-	else if (TailMatchesCS1("\\dD*"))
+	else if (TailMatchesCS("\\dD*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_domains, NULL);
-	else if (TailMatchesCS1("\\des*"))
+	else if (TailMatchesCS("\\des*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_servers);
-	else if (TailMatchesCS1("\\deu*"))
+	else if (TailMatchesCS("\\deu*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_user_mappings);
-	else if (TailMatchesCS1("\\dew*"))
+	else if (TailMatchesCS("\\dew*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_fdws);
-	else if (TailMatchesCS1("\\df*"))
+	else if (TailMatchesCS("\\df*"))
 		COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
 
-	else if (TailMatchesCS1("\\dFd*"))
+	else if (TailMatchesCS("\\dFd*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_ts_dictionaries);
-	else if (TailMatchesCS1("\\dFp*"))
+	else if (TailMatchesCS("\\dFp*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_ts_parsers);
-	else if (TailMatchesCS1("\\dFt*"))
+	else if (TailMatchesCS("\\dFt*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_ts_templates);
 	/* must be at end of \dF alternatives: */
-	else if (TailMatchesCS1("\\dF*"))
+	else if (TailMatchesCS("\\dF*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_ts_configurations);
 
-	else if (TailMatchesCS1("\\di*"))
+	else if (TailMatchesCS("\\di*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
-	else if (TailMatchesCS1("\\dL*"))
+	else if (TailMatchesCS("\\dL*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_languages);
-	else if (TailMatchesCS1("\\dn*"))
+	else if (TailMatchesCS("\\dn*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
-	else if (TailMatchesCS1("\\dp") || TailMatchesCS1("\\z"))
+	else if (TailMatchesCS("\\dp") || TailMatchesCS("\\z"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tsvmf, NULL);
-	else if (TailMatchesCS1("\\ds*"))
+	else if (TailMatchesCS("\\ds*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_sequences, NULL);
-	else if (TailMatchesCS1("\\dt*"))
+	else if (TailMatchesCS("\\dt*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
-	else if (TailMatchesCS1("\\dT*"))
+	else if (TailMatchesCS("\\dT*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes, NULL);
-	else if (TailMatchesCS1("\\du*") || TailMatchesCS1("\\dg*"))
+	else if (TailMatchesCS("\\du*") || TailMatchesCS("\\dg*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
-	else if (TailMatchesCS1("\\dv*"))
+	else if (TailMatchesCS("\\dv*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
-	else if (TailMatchesCS1("\\dx*"))
+	else if (TailMatchesCS("\\dx*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_extensions);
-	else if (TailMatchesCS1("\\dm*"))
+	else if (TailMatchesCS("\\dm*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
-	else if (TailMatchesCS1("\\dE*"))
+	else if (TailMatchesCS("\\dE*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_foreign_tables, NULL);
-	else if (TailMatchesCS1("\\dy*"))
+	else if (TailMatchesCS("\\dy*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
 
 	/* must be at end of \d alternatives: */
-	else if (TailMatchesCS1("\\d*"))
+	else if (TailMatchesCS("\\d*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_relations, NULL);
 
-	else if (TailMatchesCS1("\\ef"))
+	else if (TailMatchesCS("\\ef"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines, NULL);
-	else if (TailMatchesCS1("\\ev"))
+	else if (TailMatchesCS("\\ev"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
 
-	else if (TailMatchesCS1("\\encoding"))
+	else if (TailMatchesCS("\\encoding"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_encodings);
-	else if (TailMatchesCS1("\\h|\\help"))
+	else if (TailMatchesCS("\\h|\\help"))
 		COMPLETE_WITH_LIST(sql_commands);
-	else if (TailMatchesCS2("\\h|\\help", MatchAny))
+	else if (TailMatchesCS("\\h|\\help", MatchAny))
 	{
-		if (TailMatches1("DROP"))
+		if (TailMatches("DROP"))
 			matches = completion_matches(text, drop_command_generator);
-		else if (TailMatches1("ALTER"))
+		else if (TailMatches("ALTER"))
 			matches = completion_matches(text, alter_command_generator);
 
 		/*
@@ -3522,39 +3500,39 @@ psql_completion(const char *text, int start, int end)
 		 * repeated here
 		 */
 	}
-	else if (TailMatchesCS3("\\h|\\help", MatchAny, MatchAny))
+	else if (TailMatchesCS("\\h|\\help", MatchAny, MatchAny))
 	{
-		if (TailMatches2("CREATE|DROP", "ACCESS"))
+		if (TailMatches("CREATE|DROP", "ACCESS"))
 			COMPLETE_WITH_CONST("METHOD");
-		else if (TailMatches2("ALTER", "DEFAULT"))
+		else if (TailMatches("ALTER", "DEFAULT"))
 			COMPLETE_WITH_CONST("PRIVILEGES");
-		else if (TailMatches2("CREATE|ALTER|DROP", "EVENT"))
+		else if (TailMatches("CREATE|ALTER|DROP", "EVENT"))
 			COMPLETE_WITH_CONST("TRIGGER");
-		else if (TailMatches2("CREATE|ALTER|DROP", "FOREIGN"))
+		else if (TailMatches("CREATE|ALTER|DROP", "FOREIGN"))
 			COMPLETE_WITH_LIST2("DATA WRAPPER", "TABLE");
-		else if (TailMatches2("ALTER", "LARGE"))
+		else if (TailMatches("ALTER", "LARGE"))
 			COMPLETE_WITH_CONST("OBJECT");
-		else if (TailMatches2("CREATE|ALTER|DROP", "MATERIALIZED"))
+		else if (TailMatches("CREATE|ALTER|DROP", "MATERIALIZED"))
 			COMPLETE_WITH_CONST("VIEW");
-		else if (TailMatches2("CREATE|ALTER|DROP", "TEXT"))
+		else if (TailMatches("CREATE|ALTER|DROP", "TEXT"))
 			COMPLETE_WITH_CONST("SEARCH");
-		else if (TailMatches2("CREATE|ALTER|DROP", "USER"))
+		else if (TailMatches("CREATE|ALTER|DROP", "USER"))
 			COMPLETE_WITH_CONST("MAPPING FOR");
 	}
-	else if (TailMatchesCS4("\\h|\\help", MatchAny, MatchAny, MatchAny))
+	else if (TailMatchesCS("\\h|\\help", MatchAny, MatchAny, MatchAny))
 	{
-		if (TailMatches3("CREATE|ALTER|DROP", "FOREIGN", "DATA"))
+		if (TailMatches("CREATE|ALTER|DROP", "FOREIGN", "DATA"))
 			COMPLETE_WITH_CONST("WRAPPER");
-		else if (TailMatches3("CREATE|ALTER|DROP", "TEXT", "SEARCH"))
+		else if (TailMatches("CREATE|ALTER|DROP", "TEXT", "SEARCH"))
 			COMPLETE_WITH_LIST4("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
-		else if (TailMatches3("CREATE|ALTER|DROP", "USER", "MAPPING"))
+		else if (TailMatches("CREATE|ALTER|DROP", "USER", "MAPPING"))
 			COMPLETE_WITH_CONST("FOR");
 	}
-	else if (TailMatchesCS1("\\l*") && !TailMatchesCS1("\\lo*"))
+	else if (TailMatchesCS("\\l*") && !TailMatchesCS("\\lo*"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_databases);
-	else if (TailMatchesCS1("\\password"))
+	else if (TailMatchesCS("\\password"))
 		COMPLETE_WITH_QUERY(Query_for_list_of_roles);
-	else if (TailMatchesCS1("\\pset"))
+	else if (TailMatchesCS("\\pset"))
 	{
 		static const char *const my_list[] =
 		{"border", "columns", "expanded", "fieldsep", "fieldsep_zero",
@@ -3565,9 +3543,9 @@ psql_completion(const char *text, int start, int end)
 
 		COMPLETE_WITH_LIST_CS(my_list);
 	}
-	else if (TailMatchesCS2("\\pset", MatchAny))
+	else if (TailMatchesCS("\\pset", MatchAny))
 	{
-		if (TailMatchesCS1("format"))
+		if (TailMatchesCS("format"))
 		{
 			static const char *const my_list[] =
 			{"unaligned", "aligned", "wrapped", "html", "asciidoc",
@@ -3575,46 +3553,46 @@ psql_completion(const char *text, int start, int end)
 
 			COMPLETE_WITH_LIST_CS(my_list);
 		}
-		else if (TailMatchesCS1("linestyle"))
+		else if (TailMatchesCS("linestyle"))
 			COMPLETE_WITH_LIST_CS3("ascii", "old-ascii", "unicode");
-		else if (TailMatchesCS1("pager"))
+		else if (TailMatchesCS("pager"))
 			COMPLETE_WITH_LIST_CS3("on", "off", "always");
-		else if (TailMatchesCS1("unicode_border_linestyle|"
+		else if (TailMatchesCS("unicode_border_linestyle|"
 								"unicode_column_linestyle|"
 								"unicode_header_linestyle"))
 			COMPLETE_WITH_LIST_CS2("single", "double");
 	}
-	else if (TailMatchesCS1("\\unset"))
+	else if (TailMatchesCS("\\unset"))
 		matches = complete_from_variables(text, "", "", true);
-	else if (TailMatchesCS1("\\set"))
+	else if (TailMatchesCS("\\set"))
 		matches = complete_from_variables(text, "", "", false);
-	else if (TailMatchesCS2("\\set", MatchAny))
+	else if (TailMatchesCS("\\set", MatchAny))
 	{
-		if (TailMatchesCS1("AUTOCOMMIT|ON_ERROR_STOP|QUIET|"
+		if (TailMatchesCS("AUTOCOMMIT|ON_ERROR_STOP|QUIET|"
 						   "SINGLELINE|SINGLESTEP"))
 			COMPLETE_WITH_LIST_CS2("on", "off");
-		else if (TailMatchesCS1("COMP_KEYWORD_CASE"))
+		else if (TailMatchesCS("COMP_KEYWORD_CASE"))
 			COMPLETE_WITH_LIST_CS4("lower", "upper",
 								   "preserve-lower", "preserve-upper");
-		else if (TailMatchesCS1("ECHO"))
+		else if (TailMatchesCS("ECHO"))
 			COMPLETE_WITH_LIST_CS4("errors", "queries", "all", "none");
-		else if (TailMatchesCS1("ECHO_HIDDEN"))
+		else if (TailMatchesCS("ECHO_HIDDEN"))
 			COMPLETE_WITH_LIST_CS3("noexec", "off", "on");
-		else if (TailMatchesCS1("HISTCONTROL"))
+		else if (TailMatchesCS("HISTCONTROL"))
 			COMPLETE_WITH_LIST_CS4("ignorespace", "ignoredups",
 								   "ignoreboth", "none");
-		else if (TailMatchesCS1("ON_ERROR_ROLLBACK"))
+		else if (TailMatchesCS("ON_ERROR_ROLLBACK"))
 			COMPLETE_WITH_LIST_CS3("on", "off", "interactive");
-		else if (TailMatchesCS1("SHOW_CONTEXT"))
+		else if (TailMatchesCS("SHOW_CONTEXT"))
 			COMPLETE_WITH_LIST_CS3("never", "errors", "always");
-		else if (TailMatchesCS1("VERBOSITY"))
+		else if (TailMatchesCS("VERBOSITY"))
 			COMPLETE_WITH_LIST_CS3("default", "verbose", "terse");
 	}
-	else if (TailMatchesCS1("\\sf*"))
+	else if (TailMatchesCS("\\sf*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines, NULL);
-	else if (TailMatchesCS1("\\sv*"))
+	else if (TailMatchesCS("\\sv*"))
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
-	else if (TailMatchesCS1("\\cd|\\e|\\edit|\\g|\\i|\\include|"
+	else if (TailMatchesCS("\\cd|\\e|\\edit|\\g|\\i|\\include|"
 							"\\ir|\\include_relative|\\o|\\out|"
 							"\\s|\\w|\\write|\\lo_import"))
 	{
diff --git a/src/include/c.h b/src/include/c.h
index 901d7911980..23dd9a41358 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -224,6 +224,32 @@
 #define CppAsString2(x)			CppAsString(x)
 #define CppConcat(x, y)			x##y
 
+/*
+ * PP_NARG - return the number of arguments a vararg macro gets passed.
+ *
+ * Making C pretty by making it ugly again.
+ */
+#define PP_NARG(...) \
+	PP_NARG_(__VA_ARGS__,PP_RSEQ_N())
+#define PP_NARG_(...) \
+	PP_ARG_N(__VA_ARGS__)
+#define PP_ARG_N( \
+	_1, _2, _3, _4, _5, _6, _7, _8, _9,_10, \
+	_11,_12,_13,_14,_15,_16,_17,_18,_19,_20, \
+	_21,_22,_23,_24,_25,_26,_27,_28,_29,_30, \
+	_31,_32,_33,_34,_35,_36,_37,_38,_39,_40, \
+	_41,_42,_43,_44,_45,_46,_47,_48,_49,_50, \
+	_51,_52,_53,_54,_55,_56,_57,_58,_59,_60, \
+	_61,_62,_63,  N, ...) N
+#define PP_RSEQ_N() \
+	63,62,61,60,                   \
+	59,58,57,56,55,54,53,52,51,50, \
+	49,48,47,46,45,44,43,42,41,40, \
+	39,38,37,36,35,34,33,32,31,30, \
+	29,28,27,26,25,24,23,22,21,20, \
+	19,18,17,16,15,14,13,12,11,10, \
+	9, 8, 7, 6, 5, 4, 3, 2, 1, 0
+
 /*
  * dummyret is used to set return values in macros that use ?: to make
  * assignments.  gcc wants these to be void, other compilers like char

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