SCM_SYM_NWB       353 src/regexp.c           case 'B': return SCM_SYM_NWB;
SCM_SYM_NWB      1074 src/regexp.c               if (SCM_EQ(ast, SCM_SYM_NWB)) {
SCM_SYM_NWB      1530 src/regexp.c               || SCM_EQ(ast, SCM_SYM_WB) || SCM_EQ(ast, SCM_SYM_NWB)