"Stop Emacs and return to superior process. You can resume later.\n\
On systems that don't have job control, run a subshell instead.\n\n\
If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\
-to be read as terminal input by Emacs's superior shell.\n\
-Before suspending, if `suspend-hook' is bound and value is non-nil\n\
-call the value as a function of no args. Don't suspend if it returns non-nil.\n\
-Otherwise, suspend normally and after resumption call\n\
+to be read as terminal input by Emacs's parent, after suspension.\n\
+\n\
+Before suspending, call the functions in `suspend-hooks' with no args.\n\
+If any of them returns nil, don't call the rest and don't suspend.\n\
+Otherwise, suspend normally and after resumption run the normal hook\n\
`suspend-resume-hook' if that is bound and non-nil.\n\
\n\
Some operating systems cannot stop the Emacs process and resume it later.\n\
-On such systems, Emacs will start a subshell and wait for it to exit.")
+On such systems, Emacs starts a subshell instead of suspending.")
(stuffstring)
Lisp_Object stuffstring;
{
int count = specpdl_ptr - specpdl;
int old_height, old_width;
int width, height;
- struct gcpro gcpro1;
+ struct gcpro gcpro1, gcpro2;
extern init_sys_modes ();
if (!NILP (stuffstring))
CHECK_STRING (stuffstring, 0);
- GCPRO1 (stuffstring);
- /* Call value of suspend-hook
- if it is bound and value is non-nil. */
- if (!NILP (Vrun_hooks))
+ /* Run the functions in suspend-hooks. */
+ tem = Fsymbol_value (intern ("suspend-hooks"));
+ while (CONSP (tem))
{
- tem = call1 (Vrun_hooks, intern ("suspend-hook"));
- if (!EQ (tem, Qnil)) return Qnil;
+ Lisp_Object val;
+ GCPRO2 (stuffstring, tem);
+ val = call0 (Fcar (tem));
+ UNGCPRO;
+ tem = Fcdr (tem);
+ if (!EQ (val, Qnil)) return Qnil;
}
+ GCPRO1 (stuffstring);
get_frame_size (&old_width, &old_height);
reset_sys_modes ();
/* sys_suspend can get an error if it tries to fork a subshell