compile_stack_type 1658 src/regex-emacs.c static bool group_in_compile_stack (compile_stack_type, regnum_t);
compile_stack_type 1709 src/regex-emacs.c   compile_stack_type compile_stack;
compile_stack_type 2789 src/regex-emacs.c group_in_compile_stack (compile_stack_type compile_stack, regnum_t regnum)