regexprops-generic: update from regex.h

* doc/regexprops-generic.texi: update by running the regexprops binary
from findutils (the command line is 'regexprops "Regular Expressions"
generic').  The recent (ish) change (5a5a9388) to regex.h aligning
gnulib with GNU grep had made this document out-of-date.

1 files changed, 10 insertions, 64 deletions

diff --git a/doc/regexprops-generic.texi b/doc/regexprops-generic.texi
index 66303f3959..0edfb5458b 100644
--- a/doc/regexprops-generic.texi
+++ b/doc/regexprops-generic.texi
@@ -45,7 +45,7 @@ matches a @samp{?}.
 @end table
 
 
-Bracket expressions are used to match ranges of characters.  Bracket expressions where the range is backward, for example @samp{[z-a]}, are invalid.  Within square brackets, @samp{\} can be used to quote the following character.  Character classes are not supported, so for example you would need to use @samp{[0-9]} instead of @samp{[[:digit:]]}.
+Bracket expressions are used to match ranges of characters.  Bracket expressions where the range is backward, for example @samp{[z-a]}, are invalid.  Within square brackets, @samp{\} can be used to quote the following character.  Character classes are supported; for example @samp{[[:digit:]]} will match a single decimal digit.
 
 GNU extensions are not supported and so @samp{\w}, @samp{\W}, @samp{\<}, @samp{\>}, @samp{\b}, @samp{\B}, @samp{\`}, and @samp{\'} match @samp{w}, @samp{W}, @samp{<}, @samp{>}, @samp{b}, @samp{B}, @samp{`}, and @samp{'} respectively.
 
@@ -76,7 +76,7 @@ The longest possible match is returned; this applies to the regular expression a
 @subsection @samp{egrep} regular expression syntax
 
 
-The character @samp{.} matches any single character except newline.
+The character @samp{.} matches any single character.
 
 
 @table @samp
@@ -92,7 +92,7 @@ matches a @samp{?}.
 @end table
 
 
-Bracket expressions are used to match ranges of characters.  Bracket expressions where the range is backward, for example @samp{[z-a]}, are ignored.  Within square brackets, @samp{\} is taken literally.  Character classes are supported; for example @samp{[[:digit:]]} will match a single decimal digit.  Non-matching lists @samp{[^@dots{}]} do not ever match newline.
+Bracket expressions are used to match ranges of characters.  Bracket expressions where the range is backward, for example @samp{[z-a]}, are invalid.  Within square brackets, @samp{\} is taken literally.  Character classes are supported; for example @samp{[[:digit:]]} will match a single decimal digit.
 
 GNU extensions are supported:
 @enumerate
@@ -116,7 +116,7 @@ GNU extensions are supported:
 @end enumerate
 
 
-Grouping is performed with parentheses @samp{()}.  A backslash followed by a digit acts as a back-reference and matches the same thing as the previous grouped expression indicated by that number.  For example @samp{\2} matches the second group expression.  The order of group expressions is determined by the position of their opening parenthesis @samp{(}.
+Grouping is performed with parentheses @samp{()}.  An unmatched @samp{)} matches just itself.  A backslash followed by a digit acts as a back-reference and matches the same thing as the previous grouped expression indicated by that number.  For example @samp{\2} matches the second group expression.  The order of group expressions is determined by the position of their opening parenthesis @samp{(}.
 
 The alternation operator is @samp{|}.
 
@@ -124,7 +124,7 @@ The characters @samp{^} and @samp{$} always represent the beginning and end of a
 
 The characters @samp{*}, @samp{+} and @samp{?} are special anywhere in a regular expression.
 
-
+Intervals are specified by @samp{@{} and @samp{@}}.  Invalid intervals are treated as literals, for example @samp{a@{1} is treated as @samp{a\@{1}
 
 The longest possible match is returned; this applies to the regular expression as a whole and (subject to this constraint) to subexpressions within groups.
 
@@ -371,7 +371,7 @@ The characters @samp{^} and @samp{$} always represent the beginning and end of a
 @end enumerate
 
 
-
+Intervals are specified by @samp{@{} and @samp{@}}.  Invalid intervals are treated as literals, for example @samp{a@{1} is treated as @samp{a\@{1}
 
 The longest possible match is returned; this applies to the regular expression as a whole and (subject to this constraint) to subexpressions within groups.
 
@@ -380,7 +380,7 @@ The longest possible match is returned; this applies to the regular expression a
 @subsection @samp{grep} regular expression syntax
 
 
-The character @samp{.} matches any single character except newline.
+The character @samp{.} matches any single character.
 
 
 @table @samp
@@ -394,7 +394,7 @@ match themselves.
 @end table
 
 
-Bracket expressions are used to match ranges of characters.  Bracket expressions where the range is backward, for example @samp{[z-a]}, are ignored.  Within square brackets, @samp{\} is taken literally.  Character classes are supported; for example @samp{[[:digit:]]} will match a single decimal digit.  Non-matching lists @samp{[^@dots{}]} do not ever match newline.
+Bracket expressions are used to match ranges of characters.  Bracket expressions where the range is backward, for example @samp{[z-a]}, are invalid.  Within square brackets, @samp{\} is taken literally.  Character classes are supported; for example @samp{[[:digit:]]} will match a single decimal digit.
 
 GNU extensions are supported:
 @enumerate
@@ -513,7 +513,7 @@ The characters @samp{^} and @samp{$} always represent the beginning and end of a
 @end enumerate
 
 
-Intervals are specified by @samp{@{} and @samp{@}}.  Invalid intervals such as @samp{a@{1z} are not accepted.
+Intervals are specified by @samp{@{} and @samp{@}}.  Invalid intervals are treated as literals, for example @samp{a@{1} is treated as @samp{a\@{1}
 
 The longest possible match is returned; this applies to the regular expression as a whole and (subject to this constraint) to subexpressions within groups.
 
@@ -523,61 +523,7 @@ The longest possible match is returned; this applies to the regular expression a
 This is a synonym for ed.
 @node posix-egrep regular expression syntax
 @subsection @samp{posix-egrep} regular expression syntax
-
-
-The character @samp{.} matches any single character except newline.
-
-
-@table @samp
-
-@item +
-indicates that the regular expression should match one or more occurrences of the previous atom or regexp.
-@item ?
-indicates that the regular expression should match zero or one occurrence of the previous atom or regexp.
-@item \+
-matches a @samp{+}
-@item \?
-matches a @samp{?}.
-@end table
-
-
-Bracket expressions are used to match ranges of characters.  Bracket expressions where the range is backward, for example @samp{[z-a]}, are ignored.  Within square brackets, @samp{\} is taken literally.  Character classes are supported; for example @samp{[[:digit:]]} will match a single decimal digit.  Non-matching lists @samp{[^@dots{}]} do not ever match newline.
-
-GNU extensions are supported:
-@enumerate
-
-@item @samp{\w} matches a character within a word
-
-@item @samp{\W} matches a character which is not within a word
-
-@item @samp{\<} matches the beginning of a word
-
-@item @samp{\>} matches the end of a word
-
-@item @samp{\b} matches a word boundary
-
-@item @samp{\B} matches characters which are not a word boundary
-
-@item @samp{\`} matches the beginning of the whole input
-
-@item @samp{\'} matches the end of the whole input
-
-@end enumerate
-
-
-Grouping is performed with parentheses @samp{()}.  A backslash followed by a digit acts as a back-reference and matches the same thing as the previous grouped expression indicated by that number.  For example @samp{\2} matches the second group expression.  The order of group expressions is determined by the position of their opening parenthesis @samp{(}.
-
-The alternation operator is @samp{|}.
-
-The characters @samp{^} and @samp{$} always represent the beginning and end of a string respectively, except within square brackets.  Within brackets, @samp{^} can be used to invert the membership of the character class being specified.
-
-The characters @samp{*}, @samp{+} and @samp{?} are special anywhere in a regular expression.
-
-Intervals are specified by @samp{@{} and @samp{@}}.  Invalid intervals are treated as literals, for example @samp{a@{1} is treated as @samp{a\@{1}
-
-The longest possible match is returned; this applies to the regular expression as a whole and (subject to this constraint) to subexpressions within groups.
-
-
+This is a synonym for egrep.
 @node posix-extended regular expression syntax
 @subsection @samp{posix-extended} regular expression syntax