REG_ERPAREN       392 lib/regex.h    #define REG_ERPAREN	_REG_ERPAREN
REG_ERPAREN       820 src/regex-emacs.c   REG_ERPAREN,		/* Unmatched ) or \); not returned from regcomp.  */
REG_ERPAREN       321 test/manual/etags/c-src/emacs/src/regex.h   REG_ERPAREN,		/* Unmatched ) or \); not returned from regcomp.  */