master 14a3614353 5/5: New command emacs-news-toggle-tag

[Stefan Kangas]

branch: master
commit 14a361435324fe4b1a388a382982e6af8bf44ff0
Author: Stefan Kangas <stefan@marxist.se>
Commit: Stefan Kangas <stefan@marxist.se>

    New command emacs-news-toggle-tag
    
    * lisp/textmodes/emacs-news-mode.el (emacs-news-toggle-tag): New
    command.
    (emacs-news-mode-map): Bind above new command to "C-c C-t".
    * test/lisp/textmodes/emacs-news-mode-resources/toggle-tag.erts:
    * test/lisp/textmodes/emacs-news-mode-tests.el: New files.
---
 lisp/textmodes/emacs-news-mode.el                  |  21 ++++
 .../emacs-news-mode-resources/toggle-tag.erts      | 131 +++++++++++++++++++++
 test/lisp/textmodes/emacs-news-mode-tests.el       |  32 +++++
 3 files changed, 184 insertions(+)

diff --git a/lisp/textmodes/emacs-news-mode.el 
b/lisp/textmodes/emacs-news-mode.el
index be4bba06d2..af0aa2ddea 100644
--- a/lisp/textmodes/emacs-news-mode.el
+++ b/lisp/textmodes/emacs-news-mode.el
@@ -52,6 +52,7 @@
   :parent emacs-news-common-map
   "C-c C-s" #'emacs-news-next-untagged-entry
   "C-c C-r" #'emacs-news-previous-untagged-entry
+  "C-c C-t" #'emacs-news-toggle-tag
   "C-c C-g" #'emacs-news-goto-section
   "C-c C-j" #'emacs-news-find-heading
   "C-c C-e" #'emacs-news-count-untagged-entries
@@ -162,6 +163,26 @@ untagged NEWS entry."
   (interactive nil emacs-news-mode)
   (emacs-news-next-untagged-entry t))
 
+(defun emacs-news-toggle-tag ()
+  "Toggle documentation tag of current headline in the Emacs NEWS file."
+  (interactive nil emacs-news-mode)
+  (save-excursion
+    (goto-char (line-beginning-position))
+    (cond ((or (looking-at (rx bol (or "---" "+++") eol)))
+           (forward-line 2))
+          ((or (looking-at (rx bol "*** ")))
+           (forward-line 1)))
+    (outline-previous-visible-heading 1)
+    (forward-line -1)
+    (cond ((not (looking-at (rx bol (or "---" "+++") eol)))
+           (insert "\n---"))
+          ((looking-at (rx bol "---" eol))
+           (delete-char 3)
+           (insert "+++"))
+          ((looking-at (rx bol "+++" eol))
+           (delete-char 4))
+          (t (user-error "Invalid headline tag; can't toggle")))))
+
 (defun emacs-news-count-untagged-entries ()
   "Say how many untagged entries there are in the current NEWS buffer."
   (interactive nil emacs-news-mode)
diff --git a/test/lisp/textmodes/emacs-news-mode-resources/toggle-tag.erts 
b/test/lisp/textmodes/emacs-news-mode-resources/toggle-tag.erts
new file mode 100644
index 0000000000..63c3b1b7d8
--- /dev/null
+++ b/test/lisp/textmodes/emacs-news-mode-resources/toggle-tag.erts
@@ -0,0 +1,131 @@
+Name: tag1
+Point-Char: |
+
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+|Before, that binding was only available with 'dired-x'.
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+---
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+|Before, that binding was only available with 'dired-x'.
+=-=-=
+
+Name: tag2
+Point-Char: |
+
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+---
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+|Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
++++
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+|Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=-=
+
+Name: tag3
+Point-Char: |
+
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
++++
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+|Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+|Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=-=
+
+Name: tag4-point-at-headline
+Point-Char: |
+
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+|*** 'M-G' is now bound to 'dired-goto-subdir'.
+Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+---
+|*** 'M-G' is now bound to 'dired-goto-subdir'.
+Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=-=
+
+Name: tag5-point-at-tag
+Point-Char: |
+
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+|---
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+|+++
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=-=
+
+Name: tag6-point-at-tag
+Point-Char: |
+
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+|+++
+*** 'M-G' is now bound to 'dired-goto-subdir'.
+Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=
++++
+*** 'dired-do-relsymlink-regexp' moved from dired-x to dired.
+The corresponding key "% Y" is now bound by default in Dired.
+
+|*** 'M-G' is now bound to 'dired-goto-subdir'.
+Before, that binding was only available if the 'dired-x' package was
+loaded.
+=-=-=
diff --git a/test/lisp/textmodes/emacs-news-mode-tests.el 
b/test/lisp/textmodes/emacs-news-mode-tests.el
new file mode 100644
index 0000000000..d2da5eda90
--- /dev/null
+++ b/test/lisp/textmodes/emacs-news-mode-tests.el
@@ -0,0 +1,32 @@
+;;; emacs-news-mode-tests.el --- Tests for emacs-news-mode.el  -*- 
lexical-binding: t -*-
+
+;; Copyright (C) 2022 Free Software Foundation, Inc.
+
+;; 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 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
+;; 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.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(require 'ert)
+(require 'ert-x)
+(require 'emacs-news-mode)
+
+(ert-deftest emacs-news-toggle-tag ()
+  (ert-test-erts-file (ert-resource-file "toggle-tag.erts")
+                      (lambda ()
+                        (emacs-news-mode)
+                        (emacs-news-toggle-tag))))
+
+;;; emacs-news-mode-tests.el ends here