REG_EPAREN_IDX    161 maint/gnulib/lib/regcomp.c #define REG_EBRACE_IDX	(REG_EPAREN_IDX + sizeof "Unmatched ( or \\(")
REG_EPAREN_IDX    196 maint/gnulib/lib/regcomp.c     REG_EPAREN_IDX,