sys_subshell     11805 src/keyboard.c     sys_subshell ();
sys_subshell     5061 src/lisp.h     extern void sys_subshell (void);
sys_subshell      646 src/sysdep.c     sys_subshell ();
sys_subshell     10261 test/manual/etags/c-src/emacs/src/keyboard.c     sys_subshell ();
sys_subshell     4360 test/manual/etags/c-src/emacs/src/lisp.h extern void sys_subshell (void);