http://bugzilla.mindrot.org/show_bug.cgi?id=258
------- Additional Comments From liug at mama.indstate.edu 2002-05-28 02:53
-------
Here are some more info I gathered from the Watcom newsgroup:
The C99 draft explicitly said that:
"If a - character is in the scanlist
and is not the first, nor the second where the first
character is a ^, nor the last character, the
behavior is implementation-defined."
So (assuming the draft did not change in this respect)
for portable programs you can only trust [-09] or [09-] and
[0123456789]. But are free to rely on [0-9] if you depend
on compiler (library really) X and Y (Borland, glibc, ...),
or Z for the other interpretation (the Watcom RTL, IBM VAC++,
...).
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