Module Name:    src
Committed By:   rillig
Date:           Fri Oct 29 21:56:37 UTC 2021

Modified Files:
        src/tests/usr.bin/indent: token_binary_op.c
        src/usr.bin/indent: indent.c indent.h

Log Message:
indent: fix missing blank before binary operator


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/tests/usr.bin/indent/token_binary_op.c
cvs rdiff -u -r1.177 -r1.178 src/usr.bin/indent/indent.c
cvs rdiff -u -r1.62 -r1.63 src/usr.bin/indent/indent.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/tests/usr.bin/indent/token_binary_op.c
diff -u src/tests/usr.bin/indent/token_binary_op.c:1.3 src/tests/usr.bin/indent/token_binary_op.c:1.4
--- src/tests/usr.bin/indent/token_binary_op.c:1.3	Tue Oct 26 22:00:38 2021
+++ src/tests/usr.bin/indent/token_binary_op.c	Fri Oct 29 21:56:36 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: token_binary_op.c,v 1.3 2021/10/26 22:00:38 rillig Exp $ */
+/* $NetBSD: token_binary_op.c,v 1.4 2021/10/29 21:56:36 rillig Exp $ */
 /* $FreeBSD$ */
 
 /*
@@ -220,18 +220,22 @@ peculiarities(void)
 #indent end
 
 
+/*
+ * Before NetBSD indent.c 1.178 from 2021-10-29, indent removed the blank
+ * before the '=', in the second and third of these function pointer
+ * declarations. This was because indent interpreted the prototype parameters
+ * 'int' and 'int, int' as type casts, which doesn't make sense at all. Fixing
+ * this properly requires large style changes since indent is based on simple
+ * heuristics all over. This didn't change in indent.c 1.178; instead, the
+ * rule for inserting a blank before a binary operator was changed to always
+ * insert a blank, except at the beginning of a line.
+ */
 #indent input
 char *(*fn)() = NULL;
 char *(*fn)(int) = NULL;
 char *(*fn)(int, int) = NULL;
 #indent end
 
-/* FIXME: The parameter '(int)' is wrongly interpreted as a type cast. */
-/* FIXME: The parameter '(int, int)' is wrongly interpreted as a type cast. */
-#indent run -di0
-char *(*fn)() = NULL;
-/* $ FIXME: Missing space before '='. */
-char *(*fn)(int)= NULL;
-/* $ FIXME: Missing space before '='. */
-char *(*fn)(int, int)= NULL;
-#indent end
+/* XXX: The parameter '(int)' is wrongly interpreted as a type cast. */
+/* XXX: The parameter '(int, int)' is wrongly interpreted as a type cast. */
+#indent run-equals-input -di0

Index: src/usr.bin/indent/indent.c
diff -u src/usr.bin/indent/indent.c:1.177 src/usr.bin/indent/indent.c:1.178
--- src/usr.bin/indent/indent.c:1.177	Fri Oct 29 20:27:42 2021
+++ src/usr.bin/indent/indent.c	Fri Oct 29 21:56:36 2021
@@ -1,4 +1,4 @@
-/*	$NetBSD: indent.c,v 1.177 2021/10/29 20:27:42 rillig Exp $	*/
+/*	$NetBSD: indent.c,v 1.178 2021/10/29 21:56:36 rillig Exp $	*/
 
 /*-
  * SPDX-License-Identifier: BSD-4-Clause
@@ -43,7 +43,7 @@ static char sccsid[] = "@(#)indent.c	5.1
 
 #include <sys/cdefs.h>
 #if defined(__NetBSD__)
-__RCSID("$NetBSD: indent.c,v 1.177 2021/10/29 20:27:42 rillig Exp $");
+__RCSID("$NetBSD: indent.c,v 1.178 2021/10/29 21:56:36 rillig Exp $");
 #elif defined(__FreeBSD__)
 __FBSDID("$FreeBSD: head/usr.bin/indent/indent.c 340138 2018-11-04 19:24:49Z oshogbo $");
 #endif
@@ -815,7 +815,7 @@ process_unary_op(int decl_ind, bool tabs
 static void
 process_binary_op(void)
 {
-    if (ps.want_blank)
+    if (!ps.prev_newline && buf_len(&code) > 0)
 	buf_add_char(&code, ' ');
     buf_add_buf(&code, &token);
     ps.want_blank = true;

Index: src/usr.bin/indent/indent.h
diff -u src/usr.bin/indent/indent.h:1.62 src/usr.bin/indent/indent.h:1.63
--- src/usr.bin/indent/indent.h:1.62	Fri Oct 29 20:27:42 2021
+++ src/usr.bin/indent/indent.h	Fri Oct 29 21:56:36 2021
@@ -1,4 +1,4 @@
-/*	$NetBSD: indent.h,v 1.62 2021/10/29 20:27:42 rillig Exp $	*/
+/*	$NetBSD: indent.h,v 1.63 2021/10/29 21:56:36 rillig Exp $	*/
 
 /*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
@@ -285,7 +285,8 @@ extern struct parser_state {
     lexer_symbol prev_token;
     bool prev_newline;		/* whether the last thing scanned was a
 				 * newline */
-    bool prev_col_1;		/* whether the last token started in column 1 */
+    bool prev_col_1;		/* whether the last token started in column 1
+				 * of the unformatted input */
     enum keyword_kind prev_keyword;
     enum keyword_kind curr_keyword;
     bool next_unary;		/* whether the following operator should be

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