* lisp/emacs-lock.el (emacs-lock-locked-buffer-functions): New hook.

[gnu-emacs] / lisp / newcomment.el

diff --git a/lisp/newcomment.el b/lisp/newcomment.el
index e2be4829a9bdb7a59c43a8f8b26be0ab4dae1a73..37a76e0309cbbc8f82b5dbb1e3abd8c9cdbab7da 100644 (file)
--- a/lisp/newcomment.el
+++ b/lisp/newcomment.el
@@ -106,12 +106,12 @@ Comments might be indented to a different value in order not to go beyond
 
 ;;;###autoload
 (defvar comment-start nil
-  "*String to insert to start a new comment, or nil if no comment syntax.")
+  "String to insert to start a new comment, or nil if no comment syntax.")
 ;;;###autoload(put 'comment-start 'safe-local-variable 'string-or-null-p)
 
 ;;;###autoload
 (defvar comment-start-skip nil
-  "*Regexp to match the start of a comment plus everything up to its body.
+  "Regexp to match the start of a comment plus everything up to its body.
 If there are any \\(...\\) pairs, the comment delimiter text is held to begin
 at the place matched by the close of the first pair.")
 ;;;###autoload(put 'comment-start-skip 'safe-local-variable 'string-or-null-p)
@@ -123,7 +123,7 @@ at the place matched by the close of the first pair.")
 
 ;;;###autoload
 (defvar comment-end (purecopy "")
-  "*String to insert to end a new comment.
+  "String to insert to end a new comment.
 Should be an empty string if comments are terminated by end-of-line.")
 ;;;###autoload(put 'comment-end 'safe-local-variable 'string-or-null-p)
 
@@ -185,6 +185,7 @@ The `plain' comment style doubles this value.
 This should generally stay 0, except for a few modes like Lisp where
 it is 1 so that regions are commented with two or three semi-colons.")
 
+;;;###autoload
 (defconst comment-styles
   '((plain      nil nil nil nil
                 "Start in column 0 (do not indent), as in Emacs-20")
@@ -224,7 +225,7 @@ ALIGN specifies that the `comment-end' markers should be aligned.
      /* bli */
   if `comment-end' is empty, this has no effect, unless EXTRA is also set,
   in which case the comment gets wrapped in a box.
-  
+
 EXTRA specifies that an extra line should be used before and after the
   region to comment (to put the `comment-end' and `comment-start').
   e.g. in C it comments regions as
@@ -586,7 +587,7 @@ Point is expected to be at the start of the comment."
                    (save-excursion (end-of-line) (current-column)))))
         (other nil)
         (min (save-excursion (skip-chars-backward " \t")
-                             (1+ (current-column)))))
+                             (if (bolp) 0 (1+ (current-column))))))
     ;; Fix up the range.
     (if (< max min) (setq max min))
     ;; Don't move past the fill column.
@@ -872,14 +873,15 @@ comment markers."
          (when (and sre (looking-at (concat "\\s-*\n\\s-*" srei)))
            (goto-char (match-end 0)))
          (if (null arg) (delete-region (point-min) (point))
-           (skip-syntax-backward " ")
-           (delete-char (- numarg))
-           (unless (or (bobp)
-                       (save-excursion (goto-char (point-min))
-                                       (looking-at comment-start-skip)))
-             ;; If there's something left but it doesn't look like
-             ;; a comment-start any more, just remove it.
-             (delete-region (point-min) (point))))
+            (let ((opoint (point-marker)))
+              (skip-syntax-backward " ")
+              (delete-char (- numarg))
+              (unless (and (not (bobp))
+                           (save-excursion (goto-char (point-min))
+                                           (looking-at comment-start-skip)))
+                ;; If there's something left but it doesn't look like
+                ;; a comment-start any more, just remove it.
+                (delete-region (point-min) opoint))))
 
          ;; Remove the end-comment (and leading padding and such).
          (goto-char (point-max)) (comment-enter-backward)