(describe-function-1): Special case optimization for self-insert-command.

diff --git a/lisp/help-fns.el b/lisp/help-fns.el
index 53e280fd1a78fdb07600e0ece07b34a19614336e..cddfa3611edf4b092d9a8f73502da96ca54877af 100644 (file)
--- a/lisp/help-fns.el
+++ b/lisp/help-fns.el
@@ -383,35 +383,40 @@ face (according to `face-differs-from-default-p')."
     (princ ".")
     (terpri)
     (when (commandp function)
-      (let* ((remapped (command-remapping function))
-            (keys (where-is-internal
-                   (or remapped function) overriding-local-map nil nil))
-            non-modified-keys)
-       ;; Which non-control non-meta keys run this command?
-       (dolist (key keys)
-         (if (member (event-modifiers (aref key 0)) '(nil (shift)))
-             (push key non-modified-keys)))
-       (when remapped
-         (princ "It is remapped to `")
-         (princ (symbol-name remapped))
-         (princ "'"))
-
-       (when keys
-         (princ (if remapped " which is bound to " "It is bound to "))
-         ;; FIXME: This list can be very long (f.ex. for self-insert-command).
-         ;; If there are many, remove them from KEYS.
-         (if (< (length non-modified-keys) 10)
-             (princ (mapconcat 'key-description keys ", "))
-           (dolist (key non-modified-keys)
-             (setq keys (delq key keys)))
-           (if keys
-               (progn
-                 (princ (mapconcat 'key-description keys ", "))
-                 (princ ", and many ordinary text characters"))
-             (princ "many ordinary text characters"))))
-       (when (or remapped keys non-modified-keys)
-         (princ ".")
-         (terpri))))
+      (if (and (eq function 'self-insert-command)
+              (eq (key-binding "a") 'self-insert-command)
+              (eq (key-binding "b") 'self-insert-command)
+              (eq (key-binding "c") 'self-insert-command))
+         (princ "It is bound to many ordinary text characters.\n")
+       (let* ((remapped (command-remapping function))
+              (keys (where-is-internal
+                     (or remapped function) overriding-local-map nil nil))
+              non-modified-keys)
+         ;; Which non-control non-meta keys run this command?
+         (dolist (key keys)
+           (if (member (event-modifiers (aref key 0)) '(nil (shift)))
+               (push key non-modified-keys)))
+         (when remapped
+           (princ "It is remapped to `")
+           (princ (symbol-name remapped))
+           (princ "'"))
+
+         (when keys
+           (princ (if remapped " which is bound to " "It is bound to "))
+           ;; If lots of ordinary text characters run this command,
+           ;; don't mention them one by one.
+           (if (< (length non-modified-keys) 10)
+               (princ (mapconcat 'key-description keys ", "))
+             (dolist (key non-modified-keys)
+               (setq keys (delq key keys)))
+             (if keys
+                 (progn
+                   (princ (mapconcat 'key-description keys ", "))
+                   (princ ", and many ordinary text characters"))
+               (princ "many ordinary text characters"))))
+         (when (or remapped keys non-modified-keys)
+           (princ ".")
+           (terpri)))))
     (let* ((arglist (help-function-arglist def))
           (doc (documentation function))
           (usage (help-split-fundoc doc function)))