To: vim_dev@googlegroups.com
Subject: Patch 7.3.1175
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------

Patch 7.3.1175
Problem:    Using isalpha() and isalnum() can be slow.
Solution:   Use range checks. (Mike Williams)
Files:	    src/ex_docmd.c, src/macros.h


*** ../vim-7.3.1174/src/ex_docmd.c	2013-06-08 18:19:39.000000000 +0200
--- src/ex_docmd.c	2013-06-12 16:50:50.000000000 +0200
***************
*** 3120,3126 ****
  	for (j = 0; p[j] != NUL; ++j)
  	    if (p[j] != cmdmods[i].name[j])
  		break;
! 	if (!isalpha(p[j]) && j >= cmdmods[i].minlen
  					&& (p == cmd || cmdmods[i].has_count))
  	    return j + (int)(p - cmd);
      }
--- 3120,3126 ----
  	for (j = 0; p[j] != NUL; ++j)
  	    if (p[j] != cmdmods[i].name[j])
  		break;
! 	if (!ASCII_ISALPHA(p[j]) && j >= cmdmods[i].minlen
  					&& (p == cmd || cmdmods[i].has_count))
  	    return j + (int)(p - cmd);
      }
*** ../vim-7.3.1174/src/macros.h	2013-06-12 14:10:23.000000000 +0200
--- src/macros.h	2013-06-12 17:07:32.000000000 +0200
***************
*** 99,104 ****
--- 99,109 ----
  # define MB_TOUPPER(c)	TOUPPER_LOC(c)
  #endif
  
+ /* Use our own isdigit() replacement, because on MS-Windows isdigit() returns
+  * non-zero for superscript 1.  Also avoids that isdigit() crashes for numbers
+  * below 0 and above 255.  */
+ #define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
+ 
  /* Like isalpha() but reject non-ASCII characters.  Can't be used with a
   * special key (negative value). */
  #ifdef EBCDIC
***************
*** 107,123 ****
  # define ASCII_ISLOWER(c) islower(c)
  # define ASCII_ISUPPER(c) isupper(c)
  #else
- # define ASCII_ISALPHA(c) ((c) < 0x7f && isalpha(c))
- # define ASCII_ISALNUM(c) ((c) < 0x7f && isalnum(c))
  # define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26)
  # define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26)
  #endif
  
- /* Use our own isdigit() replacement, because on MS-Windows isdigit() returns
-  * non-zero for superscript 1.  Also avoids that isdigit() crashes for numbers
-  * below 0 and above 255.  */
- #define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
- 
  /* macro version of chartab().
   * Only works with values 0-255!
   * Doesn't work for UTF-8 mode with chars >= 0x80. */
--- 112,123 ----
  # define ASCII_ISLOWER(c) islower(c)
  # define ASCII_ISUPPER(c) isupper(c)
  #else
  # define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26)
  # define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26)
+ # define ASCII_ISALPHA(c) (ASCII_ISUPPER(c) || ASCII_ISLOWER(c))
+ # define ASCII_ISALNUM(c) (ASCII_ISALPHA(c) || VIM_ISDIGIT(c))
  #endif
  
  /* macro version of chartab().
   * Only works with values 0-255!
   * Doesn't work for UTF-8 mode with chars >= 0x80. */
*** ../vim-7.3.1174/src/version.c	2013-06-12 14:40:58.000000000 +0200
--- src/version.c	2013-06-12 17:05:51.000000000 +0200
***************
*** 730,731 ****
--- 730,733 ----
  {   /* Add new patch number below this line */
+ /**/
+     1175,
  /**/

-- 
"Hit any key to continue" is a lie.

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
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