-;;; elid-head.el --- hide headers in files
+;;; elide-head.el --- hide headers in files
-;; Copyright (C) 1999 Free Software Foundation, Inc.
+;; Copyright (C) 1999, 2001-2016 Free Software Foundation, Inc.
;; Author: Dave Love <fx@gnu.org>
;; Keywords: outlines tools
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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 2, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, 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
;; 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., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; `elide-head'. A buffer-local invisible overlay manages the
;; elision.
-;; Please don't turn this on in site init files so that information
-;; isn't hidden from users who may not know what it says.
+;; You might add `elide-head' to appropriate major mode hooks or to
+;; `find-file-hook'. Please do not do this in site init files. If
+;; you do, information may be hidden from users who don't know it
+;; already.
+
+;; Note that `hs-minor-mode' will do a similar job by default, but
+;; it's not selective about what leading commentary it hides.
;; Inspired by jwz's hide-copyleft.el, for which we don't have an
;; assignment.
(defgroup elide-head nil
"Eliding copyright headers and the like in source files."
+ :version "21.1"
:prefix "elide-head"
:group 'tools)
(defcustom elide-head-headers-to-hide
- '(("is free software; you can redistribute it" . ; GNU boilerplate
- "Boston, MA 02111-1307, USA\\.")
+ '(("is free software[:;] you can redistribute it" . ; GNU boilerplate
+ "\\(Boston, MA 0211\\(1-1307\\|0-1301\\), USA\\|\
+If not, see <http://www\\.gnu\\.org/licenses/>\\)\\.")
("The Regents of the University of California\\. All rights reserved\\." .
- "SUCH DAMAGE\\.") ; BSD
+ "SUCH DAMAGE\\.") ; BSD
("Permission is hereby granted, free of charge" . ; X11
"authorization from the X Consortium\\."))
"Alist of regexps defining start end end of text to elide.
The header is made invisible with an overlay. With a prefix arg, show
an elided material again.
-This is suitable as an entry on `find-file-hooks' or appropriate mode hooks."
+This is suitable as an entry on `find-file-hook' or appropriate mode hooks."
(interactive "P")
(if arg
(elide-head-show)
(when (re-search-forward (caar rest) nil t)
(setq beg (point))
(when (re-search-forward (cdar rest) nil t)
- (setq end (point)
+ (setq end (point-marker)
rest nil))))
(if rest (setq rest (cdr rest))))
(if (not (and beg end))
- (if (interactive-p)
- (error "No header found"))
+ (if (called-interactively-p 'interactive)
+ (message "No header found"))
(goto-char beg)
(end-of-line)
(if (overlayp elide-head-overlay)
- (move-overlay elide-head-overlay (point) end)
- (setq elide-head-overlay (make-overlay (point) end)))
+ (move-overlay elide-head-overlay (point-marker) end)
+ (setq elide-head-overlay (make-overlay (point-marker) end)))
(overlay-put elide-head-overlay 'invisible t)
- (overlay-put elide-head-overlay 'intangible t)
+ (overlay-put elide-head-overlay 'evaporate t)
(overlay-put elide-head-overlay 'after-string "...")))))))
(defun elide-head-show ()
(if (and (overlayp elide-head-overlay)
(overlay-buffer elide-head-overlay))
(delete-overlay elide-head-overlay)
- (if (interactive-p)
- (error "No header hidden"))))
+ (if (called-interactively-p 'interactive)
+ (message "No header hidden"))))
(provide 'elide-head)