mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-23 07:19:15 +00:00
79 lines
2.9 KiB
EmacsLisp
79 lines
2.9 KiB
EmacsLisp
;;; mb-depth.el --- Indicate minibuffer-depth in prompt
|
|
;;
|
|
;; Copyright (C) 2006, 2007 Free Software Foundation, Inc.
|
|
;;
|
|
;; Author: Miles Bader <miles@gnu.org>
|
|
;; Keywords: convenience
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software; you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation; either version 3, or (at your option)
|
|
;; any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs; see the file COPYING. If not, write to the
|
|
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
;; Boston, MA 02110-1301, USA.
|
|
|
|
;;; Commentary:
|
|
;;
|
|
;; Defines the minor mode `minibuffer-indicate-depth-mode'.
|
|
;;
|
|
;; When active, any recursive use of the minibuffer will show
|
|
;; the recursion depth in the minibuffer prompt. This is only
|
|
;; useful if `enable-recursive-minibuffers' is non-nil.
|
|
|
|
;;; Code:
|
|
|
|
(defvar minibuf-depth-indicator-function nil
|
|
"If non-nil, function to set up the minibuffer depth indicator.
|
|
It is called with one argument, the minibuffer depth,
|
|
and must return a string.")
|
|
|
|
;; An overlay covering the prompt. This is a buffer-local variable in
|
|
;; each affected minibuffer.
|
|
;;
|
|
(defvar minibuf-depth-overlay)
|
|
(make-variable-buffer-local 'minibuf-depth-overlay)
|
|
|
|
;; This function goes on minibuffer-setup-hook
|
|
(defun minibuf-depth-setup-minibuffer ()
|
|
"Set up a minibuffer for `minibuffer-indicate-depth-mode'.
|
|
The prompt should already have been inserted."
|
|
(when (> (minibuffer-depth) 1)
|
|
(setq minibuf-depth-overlay (make-overlay (point-min) (1+ (point-min))))
|
|
(overlay-put minibuf-depth-overlay 'before-string
|
|
(if minibuf-depth-indicator-function
|
|
(funcall minibuf-depth-indicator-function (minibuffer-depth))
|
|
(propertize (format "[%d]" (minibuffer-depth)) 'face 'highlight)))
|
|
(overlay-put minibuf-depth-overlay 'evaporate t)))
|
|
|
|
;;;###autoload
|
|
(define-minor-mode minibuffer-indicate-depth-mode
|
|
"Toggle Minibuffer Indicate Depth mode.
|
|
When active, any recursive use of the minibuffer will show
|
|
the recursion depth in the minibuffer prompt. This is only
|
|
useful if `enable-recursive-minibuffers' is non-nil.
|
|
|
|
With prefix argument ARG, turn on if positive, otherwise off.
|
|
Returns non-nil if the new state is enabled."
|
|
:global t
|
|
:group 'minibuffer
|
|
(if minibuffer-indicate-depth-mode
|
|
;; Enable the mode
|
|
(add-hook 'minibuffer-setup-hook 'minibuf-depth-setup-minibuffer)
|
|
;; Disable the mode
|
|
(remove-hook 'minibuffer-setup-hook 'minibuf-depth-setup-minibuffer)))
|
|
|
|
(provide 'mb-depth)
|
|
|
|
;; arch-tag: 50224089-5bf5-46f8-803d-18f018c5eacf
|
|
;;; mb-depth.el ends here
|