+# At least for Mac OS X's grep, the order between . and [ in "[^.[]"
+# matters:
+# $ LC_ALL=fr_FR grep -nE '[^[.]' /dev/null
+# $ LC_ALL=C grep -nE '[^[.]' /dev/null
+# grep: invalid collating element or class
+# $ LC_ALL=fr_FR grep -nE '[^.[]' /dev/null
+# $ LC_ALL=C grep -nE '[^.[]' /dev/null
+sc_at_parser_check:
+ @prohibit='AT_PARSER_CHECK\(\[+[^.[]|AT_CHECK\(\[+\./' \
+ halt='use AT_PARSER_CHECK for and only for generated parsers' \
+ $(_sc_search_regexp)
+