long-options: add parse_gnu_standard_options_only Discussed in https://bugs.gnu.org/33468 . * lib/long-options.c (parse_long_options): Use EXIT_SUCCESS instead of 0. (parse_gnu_standard_options_only): Add function to process the GNU default options --help and --version and fail for any other unknown long or short option. See https://gnu.org/prep/standards/html_node/Command_002dLine-Interfaces.html . * lib/long-options.h (parse_gnu_standard_options_only): Declare it. * modules/long-options (depends-on): Add stdbool, exitfail. * top/maint.mk (sc_prohibit_long_options_without_use): Update syntax-check rule, add new function name.

Files:
tests/test-c-strcase.sh
tests/test-c-strcasecmp.c
tests/test-c-strncasecmp.c
tests/macros.h
m4/locale-fr.m4
m4/locale-tr.m4
m4/codeset.m4

Depends-on:
c-ctype
setlocale

configure.ac:
gt_LOCALE_FR
gt_LOCALE_TR_UTF8

Makefile.am:
TESTS += test-c-strcase.sh
TESTS_ENVIRONMENT += LOCALE_FR='@LOCALE_FR@' LOCALE_TR_UTF8='@LOCALE_TR_UTF8@'
check_PROGRAMS += test-c-strcasecmp test-c-strncasecmp