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avoid "magic constant" 32 (the difference from 'A' to 'a')

This commit is contained in:
Roberto Ierusalimschy 2011-06-27 15:22:46 -03:00
parent 374773748b
commit f9eea453b7
1 changed files with 2 additions and 2 deletions
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4
lctype.h
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@ -1,5 +1,5 @@
/*
** $Id: lctype.h,v 1.9 2011/06/23 16:00:43 roberto Exp roberto $
** $Id: lctype.h,v 1.10 2011/06/24 12:25:33 roberto Exp roberto $
** 'ctype' functions for Lua
** See Copyright Notice in lua.h
*/
@ -64,7 +64,7 @@
/*
** this 'ltolower' only works for alphabetic characters
*/
#define ltolower(c) ((c) | 32)
#define ltolower(c) ((c) | ('A' ^ 'a'))
/* two more entries for 0 and -1 (EOZ) */