new module 'iswdigit'

[Bruno Haible]

POSIX provides a way to the libc implementor to add non-ASCII characters to the
"digit" character class. However, ISO C 99 section 7.25.2.1.5 takes that
freedom away. The iswdigit() function is not ISO C compliant on a number of
platforms. This series of patches provides the workaround.


2020-01-25  Bruno Haible  <address@hidden>

        mbchar, wctype: Use the corrected iswdigit function.
        * modules/mbchar (Depends-on): Add iswdigit.
        * modules/wctype (Depends-on): Likewise.

        iswdigit: Add tests.
        * tests/test-iswdigit.c: New file.
        * tests/test-iswdigit.sh: New file.
        * modules/iswdigit-tests: New file.

        iswdigit: New module.
        * m4/iswdigit.m4: New file.
        * lib/wctype.in.h (iswdigit): Potentially override.
        (iswdigit, rpl_iswdigit): Test REPLACE_ISWDIGIT, not REPLACE_ISWCNTRL.
        * lib/iswdigit.c: New file.
        * m4/wctype_h.m4 (gl_WCTYPE_H_DEFAULTS): Initialize GNULIB_ISWDIGIT,
        REPLACE_ISWDIGIT.
        * modules/wctype-h (Makefile.am): Substitute GNULIB_ISWDIGIT,
        REPLACE_ISWDIGIT.
        * modules/iswdigit: New file.
        * doc/posix-functions/iswdigit.texi: Mention the portability problem.

0001-iswdigit-New-module.patch
Description: Text Data

0002-iswdigit-Add-tests.patch
Description: Text Data

0003-mbchar-wctype-Use-the-corrected-iswdigit-function.patch
Description: Text Data