Module Name: src
Committed By: uwe
Date: Sun Aug 28 12:59:50 UTC 2022
Modified Files:
src/lib/libc/regex: re_format.7
Log Message:
re_format(7): Use dagger, not double dagger. Make it superscript.
To generate a diff of this commit:
cvs rdiff -u -r1.14 -r1.15 src/lib/libc/regex/re_format.7
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/lib/libc/regex/re_format.7
diff -u src/lib/libc/regex/re_format.7:1.14 src/lib/libc/regex/re_format.7:1.15
--- src/lib/libc/regex/re_format.7:1.14 Wed Feb 24 09:10:12 2021
+++ src/lib/libc/regex/re_format.7 Sun Aug 28 12:59:50 2022
@@ -1,4 +1,4 @@
-.\" $NetBSD: re_format.7,v 1.14 2021/02/24 09:10:12 wiz Exp $
+.\" $NetBSD: re_format.7,v 1.15 2022/08/28 12:59:50 uwe Exp $
.\"
.\" Copyright (c) 1992, 1993, 1994 Henry Spencer.
.\" Copyright (c) 1992, 1993, 1994
@@ -64,18 +64,19 @@ Obsolete REs mostly exist for backward c
they will be discussed at the end.
.St -p1003.2
leaves some aspects of RE syntax and semantics open;
-`\(dd' marks decisions on these aspects that
+.ds DG \\s-2\\v'-0.4m'\\(dg\\v'0.4m'\\s+2
+`\(dg' marks decisions on these aspects that
may not be fully portable to other
.St -p1003.2
implementations.
.Pp
-A (modern) RE is one\(dd or more non-empty\(dd
+A (modern) RE is one\*(DG or more non-empty\*(DG
.Em branches ,
separated by
.Ql \&| .
It matches anything that matches one of the branches.
.Pp
-A branch is one\(dd or more
+A branch is one\*(DG or more
.Em pieces ,
concatenated.
It matches a match for the first, followed by a match for the second, etc.
@@ -83,7 +84,7 @@ It matches a match for the first, follow
A piece is an
.Em atom
possibly followed
-by a single\(dd
+by a single\*(DG
.Ql \&* ,
.Ql \&+ ,
.Ql \&? ,
@@ -111,7 +112,7 @@ always followed by
.Ql \&} .
The integers must lie between 0 and
.Dv RE_DUP_MAX
-(255\(dd) inclusive,
+(255\*(DG) inclusive,
and if there are two of them, the first may not exceed the second.
An atom followed by a bound containing one integer
.Em i
@@ -144,7 +145,7 @@ An atom is a regular expression enclosed
regular expression),
an empty set of
.Ql ()
-(matching the null string)\(dd,
+(matching the null string)\*(DG,
a
.Em bracket expression
(see below),
@@ -160,16 +161,16 @@ followed by one of the characters
(matching that character taken as an ordinary character),
a
.Ql \e
-followed by any other character\(dd
+followed by any other character\*(DG
(matching that character taken as an ordinary character,
as if the
.Ql \e
-had not been present\(dd),
+had not been present\*(DG),
or a single character with no other significance (matching that character).
A
.Ql \&{
followed by a character other than a digit is an ordinary
-character, not the beginning of a bound\(dd.
+character, not the beginning of a bound\*(DG.
It is illegal to end an RE with
.Ql \e .
.Pp
@@ -193,7 +194,7 @@ of characters between those two (inclusi
collating sequence,
.No e.g. Ql [0-9]
in ASCII matches any decimal digit.
-It is illegal\(dd for two ranges to share an
+It is illegal\*(DG for two ranges to share an
endpoint,
.No e.g. Ql a-c-e .
Ranges are very collating-sequence-dependent,
@@ -265,7 +266,7 @@ then
and
.Ql [xy]
are all synonymous.
-An equivalence class may not\(dd be an endpoint
+An equivalence class may not\*(DG be an endpoint
of a range.
.Pp
Within a bracket expression, the name of a
@@ -297,7 +298,7 @@ The reverse, matching any character that
class, the negation operator of bracket expressions may be used:
.Ql [^[:class:]] .
.Pp
-There are two special cases\(dd of bracket expressions:
+There are two special cases\*(DG of bracket expressions:
the bracket expressions
.Ql [[:<:]]
and
@@ -377,7 +378,7 @@ and
becomes
.Ql [^xX] .
.Pp
-No particular limit is imposed on the length of REs\(dd.
+No particular limit is imposed on the length of REs\*(DG.
Programs intended to be portable should not employ REs longer
than 256 bytes,
as an implementation can refuse to accept such REs and remain
@@ -424,10 +425,10 @@ and
by themselves ordinary characters.
.Ql \&^
is an ordinary character except at the beginning of the
-RE or\(dd the beginning of a parenthesized subexpression,
+RE or\*(DG the beginning of a parenthesized subexpression,
.Ql \&$
is an ordinary character except at the end of the
-RE or\(dd the end of a parenthesized subexpression,
+RE or\*(DG the end of a parenthesized subexpression,
and
.Ql \&*
is an ordinary character if it appears at the beginning of the
