RE_SYNTAX_POSIX_BASIC 5665 libglibc/regex.c       RE_SYNTAX_POSIX_EXTENDED : RE_SYNTAX_POSIX_BASIC;
RE_SYNTAX_POSIX_BASIC  205 libglibc/regex.h #define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
RE_SYNTAX_POSIX_BASIC  207 libglibc/regex.h #define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC