kc3-lang/gnulib

2023-03-30T13:25:20

btowc: Fix behaviour in the C locale. * lib/btowc.c: Include <string.h> (btowc): Use mbrtowc instead of mbtowc when possible. * m4/btowc.m4 (gl_FUNC_BTOWC): Test for the mingw bug in the C locale. Invoke gl_MBRTOWC_C_LOCALE. If mbrtowc is buggy in the C locale, override also btowc. (gl_PREREQ_BTOWC): Test whether mbrtowc exists. * modules/btowc (Files): Add m4/mbrtowc.m4. (Depends-on): Add mbrtowc. * tests/test-btowc.c (main): Add a test of the C locale, based on tests/test-mbrtowc.c. * tests/test-btowc3.sh: New file, based on tests/test-mbrtowc5.sh. * modules/btowc-tests (Files): Add it. (Makefile.am): Test it. * doc/posix-functions/btowc.texi: Mention the two C locale behaviour bugs and that they are worked around.