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* iswxdigit: New module.Bruno Haible2020-01-251-0/+35
* m4/iswxdigit.m4: New file. * lib/wctype.in.h (iswxdigit): Potentially override. (iswxdigit, rpl_iswxdigit): Test REPLACE_ISWXDIGIT, not REPLACE_ISWCNTRL. Rely on ISO C compliant definition. * lib/iswxdigit.c: New file. * m4/wctype_h.m4 (gl_WCTYPE_H_DEFAULTS): Initialize GNULIB_ISWXDIGIT, REPLACE_ISWXDIGIT. * modules/wctype-h (Makefile.am): Substitute GNULIB_ISWXDIGIT, REPLACE_ISWXDIGIT. * modules/iswxdigit: New file. * doc/posix-functions/iswxdigit.texi: Mention the portability problem.