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, 5 insertions, 5 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 907787a1f3e..d97e80a7171 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -629,12 +629,12 @@ notifications, if Emacs is compiled with file notification support.
 *** gulp.el
 
 +++
-** The character class [:print:] in regular expressions
-no longer matches any multibyte character.  Instead, Emacs now
+** The character classes [:graph:] and [:print:] in regular expressions
+no longer match every multibyte character.  Instead, Emacs now
 consults the Unicode character properties to determine which
-characters are printable.  In particular, surrogates and unassigned
-codepoints are now rejected by this class.  If you want the old
-behavior, use [:multibyte:] instead.
+characters are graphic or printable.  In particular, surrogates and
+unassigned codepoints are now rejected.  If you want the old behavior,
+use [:multibyte:] instead.
 
 
 * New Modes and Packages in Emacs 25.1