Re: naming convention based file toggling facility

[Masatake YAMATO <jet@gyve.org>]

>     > I've had a hackish little elisp function for years that always struck me
>     > as a slightly surprising omission from emacs: the ability to toggle
>     > between files based on a naming convention like: <source>.c and
>     > <source>.h.
> 
>     M-x ff-find-other-file may be useful.
> 
> If this does the job, maybe CC mode should provide bindings and menu
> bar entrie for it--or for some other clean interface to it.

ff-find-other-file is useful particularly in c-mode and c++-mode.
However it may be useful in other modes.
e.g. moving between *gud* buffer and .gdbinit.

Next patch is prosaic but it works.

Masatake YAMATO

Index: lisp/bindings.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/bindings.el,v
retrieving revision 1.123
diff -u -r1.123 bindings.el
--- lisp/bindings.el	8 Sep 2003 08:02:45 -0000	1.123
+++ lisp/bindings.el	26 Sep 2003 05:56:23 -0000
@@ -371,6 +371,13 @@
   (interactive)
   (switch-to-buffer (other-buffer)))
 
+(defun mode-line-ff-other-file (event) "\
+Find the header or source file corresponding to the current buffer."
+  (interactive "e")
+  (save-selected-window
+    (select-window (posn-window (event-start event)))
+    (ff-find-the-other-file)))
+
 (defvar mode-line-mode-menu (make-sparse-keymap "Minor Modes") "\
 Menu of mode operations in the mode line.")
 
@@ -449,6 +456,7 @@
   (define-key map [mode-line mouse-3] 'mode-line-bury-buffer)
   (define-key map [header-line down-mouse-3] 'ignore)
   (define-key map [header-line mouse-3] 'mode-line-bury-buffer)
+  (define-key map [mode-line mouse-2] 'mode-line-ff-other-file)
   (setq mode-line-buffer-identification-keymap map))
 
 (defun propertized-buffer-identification (fmt)
@@ -458,7 +466,7 @@
   (list (propertize fmt
 		    'face '(:weight bold)
 		    'help-echo
-		    (purecopy "mouse-1: previous buffer, mouse-3: next buffer")
+		    (purecopy "mouse-1: previous buffer, mouse-2: find related file, mouse-3: next buffer")
 		    'local-map mode-line-buffer-identification-keymap)))
 
 (setq-default mode-line-buffer-identification