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| author | Paul Eggert <eggert@cs.ucla.edu> | 2017-07-05 17:51:31 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2017-07-05 18:59:31 -0700 |
| commit | d6662694d05be03fdd070353637dd22a324c8b7a (patch) | |
| tree | 3823cc192290478c041db63121c88afebfccbc13 /src/regex.c | |
| parent | 24faf6b0d2fe990e9334dd2e3238f749fec87897 (diff) | |
| download | emacs-d6662694d05be03fdd070353637dd22a324c8b7a.tar.gz | |
Convert hex digits more systematically
This makes the code a bit smaller and presumably faster, as
it substitutes a single lookup for conditional jumps.
* src/character.c (hexdigit): New constant.
(syms_of_character) [HEXDIGIT_IS_CONST]: Initialize it.
* src/character.h (HEXDIGIT_CONST, HEXDIGIT_IS_CONST): New macros.
(hexdigit): New decl.
(char_hexdigit): New inline function.
* src/charset.c: Do not include c-ctype.h.
* src/charset.c (read_hex):
* src/editfns.c (styled_format):
* src/image.c (xbm_scan):
* src/lread.c (read_escape):
* src/regex.c (ISXDIGIT) [emacs]:
Use char_hexdigit insted of doing it by hand.
Diffstat (limited to 'src/regex.c')
| -rw-r--r-- | src/regex.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/src/regex.c b/src/regex.c index 240a91f2ba8..fb48765c96c 100644 --- a/src/regex.c +++ b/src/regex.c @@ -306,9 +306,7 @@ enum syntaxcode { Swhitespace = 0, Sword = 1, Ssymbol = 2 }; /* In Emacs, these are only used for single-byte characters. */ # define ISDIGIT(c) ((c) >= '0' && (c) <= '9') # define ISCNTRL(c) ((c) < ' ') -# define ISXDIGIT(c) (((c) >= '0' && (c) <= '9') \ - || ((c) >= 'a' && (c) <= 'f') \ - || ((c) >= 'A' && (c) <= 'F')) +# define ISXDIGIT(c) (0 <= char_hexdigit (c)) /* The rest must handle multibyte characters. */ |