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02-18-2008, 08:59 AM
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 Re: isspace, isdigit, isalnum, isblank, isgraph, islower, isprint usage On Tue, 14 Nov 2006, Charles Longeau wrote: > On 2006/11/14, Joerg Sonnenberger <joerg@britannica.bec.de>: > > On Sun, Nov 12, 2006 at 06:03:30PM +0100, Charles Longeau wrote: > > > All isspace(3), isdigit(3), isalnum(3), isblank(3), isgraph(3), > > > islower(3), isprint(3) functions return false for c == 0. > > > > A locale could have a valid meaning for '\0', so I don't think this is a > > good idea. > > Are you sure about the valid meaning for '\0' for some locale ? I always > thought that '\0' was for string terminaison. > > Anyway, when I'm looking at lib/libc/gen/ctype_.c and > lib/libc/gen/isctype.c, there's no locale involved. ehhh, you should look harder, check lib/libc/locale/runeglue.c. otoh, it would be a quite funny locale def to assign any of the types to the char '\0'. -Otto      |
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