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, 4 insertions, 4 deletions

diff --git a/lisp/emacs-lisp/rx.el b/lisp/emacs-lisp/rx.el
index a5a228e5876..ab9beb60928 100644
--- a/lisp/emacs-lisp/rx.el
+++ b/lisp/emacs-lisp/rx.el
@@ -965,12 +965,12 @@ CHAR
      matches space and tab only.
 
 `graphic', `graph'
-     matches graphic characters--everything except ASCII control chars,
-     space, and DEL.
+     matches graphic characters--everything except space, ASCII
+     and non-ASCII control characters, surrogates, and codepoints
+     unassigned by Unicode.
 
 `printing', `print'
-     matches printing characters--everything except ASCII and non-ASCII
-     control characters, surrogates, and codepoints unassigned by Unicode.
+     matches space and graphic characters.
 
 `alphanumeric', `alnum'
      matches alphabetic characters and digits.  (For multibyte characters,