Make [:graph:] act like [:print:] sans space

In POSIX [[:print:]] is equivalent to [ [:graph:]], so change
[:graph:] so that it matches everything that [:print:] does,
except for space.
* doc/lispref/searching.texi (Char Classes):
* etc/NEWS:
* lisp/emacs-lisp/rx.el (rx):
Document [:graph:] to be [:print:] sans ' '.
* src/character.c, src/character.h (graphicp): New function.
* src/regex.c (ISGRAPH) [emacs]: Use it.
(BIT_GRAPH): New macro.
(BIT_PRINT): Increase to 0x200, to make room for BIT_GRAPH.
(re_wctype_to_bit) [! WIDE_CHAR_SUPPORT]:
Return BIT_GRAPH for RECC_GRAPH.
(re_match_2_internal) [emacs]: Use ISGRAPH if BIT_GRAPH,
and ISPRINT if BIT_PRINT.

1 files changed, 7 insertions, 7 deletions

diff --git a/doc/lispref/searching.texi b/doc/lispref/searching.texi
index 238d814a9dc..10ea411d436 100644
--- a/doc/lispref/searching.texi
+++ b/doc/lispref/searching.texi
@@ -558,8 +558,11 @@ This matches any @acronym{ASCII} control character.
 This matches @samp{0} through @samp{9}.  Thus, @samp{[-+[:digit:]]}
 matches any digit, as well as @samp{+} and @samp{-}.
 @item [:graph:]
-This matches graphic characters---everything except @acronym{ASCII} control
-characters, space, and the delete character.
+This matches graphic characters---everything except space,
+@acronym{ASCII} and non-@acronym{ASCII} control characters,
+surrogates, and codepoints unassigned by Unicode, as indicated by the
+Unicode @samp{general-category} property (@pxref{Character
+Properties}).
 @item [:lower:]
 This matches any lower-case letter, as determined by the current case
 table (@pxref{Case Tables}).  If @code{case-fold-search} is
@@ -569,11 +572,8 @@ This matches any multibyte character (@pxref{Text Representations}).
 @item [:nonascii:]
 This matches any non-@acronym{ASCII} character.
 @item [:print:]
-This matches printing characters---everything except @acronym{ASCII}
-and non-@acronym{ASCII} control characters (including the delete
-character), surrogates, and codepoints unassigned by Unicode, as
-indicated by the Unicode @samp{general-category} property
-(@pxref{Character Properties}).
+This matches any printing character---either space, or a graphic
+character matched by @samp{[:graph:]}.
 @item [:punct:]
 This matches any punctuation character.  (At present, for multibyte
 characters, it matches anything that has non-word syntax.)