SCM_SYM_OPEN_PAREN 446 src/regexp.c return SCM_SYM_OPEN_PAREN; SCM_SYM_OPEN_PAREN 466 src/regexp.c return SCM_SYM_OPEN_PAREN; SCM_SYM_OPEN_PAREN 599 src/regexp.c if (SCM_EQ(token, SCM_SYM_OPEN_PAREN)) {