Refactor minibuffer aborting

* lisp/minibuffer.el (minibuffer-quit-recursive-edit): New optional
argument to specify how many levels of recursion to quit.

* src/eval.c (internal_catch): Remove special handling of 'exit
tag (bug#49700).
* src/minibuf.c (Fabort_minibuffers): Use
minibuffer-quit-recursive-edit to quit multiple levels of minibuffer
recursion.

3 files changed, 7 insertions, 25 deletions

diff --git a/src/eval.c b/src/eval.c
index 48104bd0f45..76fe671b6dd 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -1174,14 +1174,6 @@ usage: (catch TAG BODY...)  */)
    FUNC should return a Lisp_Object.
    This is how catches are done from within C code.  */
 
-/* MINIBUFFER_QUIT_LEVEL is to handle quitting from nested minibuffers by
-   throwing t to tag `exit'.
-   0 means there is no (throw 'exit t) in progress, or it wasn't from
-     a minibuffer which isn't the most nested;
-   N > 0 means the `throw' was done from the minibuffer at level N which
-     wasn't the most nested.  */
-EMACS_INT minibuffer_quit_level = 0;
-
 Lisp_Object
 internal_catch (Lisp_Object tag,
                 Lisp_Object (*func) (Lisp_Object), Lisp_Object arg)
@@ -1189,9 +1181,6 @@ internal_catch (Lisp_Object tag,
   /* This structure is made part of the chain `catchlist'.  */
   struct handler *c = push_handler (tag, CATCHER);
 
-  if (EQ (tag, Qexit))
-    minibuffer_quit_level = 0;
-
   /* Call FUNC.  */
   if (! sys_setjmp (c->jmp))
     {
@@ -1205,17 +1194,6 @@ internal_catch (Lisp_Object tag,
       Lisp_Object val = handlerlist->val;
       clobbered_eassert (handlerlist == c);
       handlerlist = handlerlist->next;
-      if (EQ (tag, Qexit) && EQ (val, Qt) && minibuffer_quit_level > 0)
-        /* If we've thrown t to tag `exit' from within a minibuffer, we
-           exit all minibuffers more deeply nested than the current
-           one.  */
-        {
-          if (minibuf_level > minibuffer_quit_level
-              && !NILP (Fminibuffer_innermost_command_loop_p (Qnil)))
-            Fthrow (Qexit, Qt);
-          else
-            minibuffer_quit_level = 0;
-        }
       return val;
     }
 }
diff --git a/src/lisp.h b/src/lisp.h
index 9716b34baee..720e621d19c 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -4120,7 +4120,6 @@ intern_c_string (const char *str)
 }
 
 /* Defined in eval.c.  */
-extern EMACS_INT minibuffer_quit_level;
 extern Lisp_Object Vautoload_queue;
 extern Lisp_Object Vrun_hooks;
 extern Lisp_Object Vsignaling_function;
diff --git a/src/minibuf.c b/src/minibuf.c
index 0e7baf30dca..a4219d2a63f 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -491,8 +491,13 @@ confirm the aborting of the current minibuffer and all contained ones.  */)
       array[1] = make_fixnum (minibuf_level - minibuf_depth + 1);
       if (!NILP (Fyes_or_no_p (Fformat (2, array))))
         {
-          minibuffer_quit_level = minibuf_depth;
-          Fthrow (Qexit, Qt);
+          /* Due to the above check, the current minibuffer is in the
+             most nested command loop, which means that we don't have
+             to abort any extra non-minibuffer recursive edits.  Thus,
+             the number of recursive edits we have to abort equals the
+             number of minibuffers we have to abort.  */
+          CALLN (Ffuncall, intern ("minibuffer-quit-recursive-edit"),
+                 array[1]);
         }
     }
   else