X-Git-Url: https://git.distorted.org.uk/~mdw/profile/blobdiff_plain/eff455a10e9f7ca9d3e14145e62adea14db92dc1..040cb5bc369962c947396b293fc4b447532142de:/el/dot-emacs.el

diff --git a/el/dot-emacs.el b/el/dot-emacs.el
index 20978de..497318a 100644
--- a/el/dot-emacs.el
+++ b/el/dot-emacs.el
@@ -645,21 +645,15 @@ This is mainly useful in `auto-fill-mode'.")
 
 ;; Utility functions.
 
-(defun mdw-tabify (s)
-  "Tabify the string S.  This is a horrid hack."
-  (save-excursion
-    (save-match-data
-      (let (start end)
-	(beginning-of-line)
-	(setq start (point-marker))
+(defun mdw-maybe-tabify (s)
+  "Tabify or untabify the string S, according to `indent-tabs-mode'."
+  (let ((tabfun (if indent-tabs-mode #'tabify #'untabify)))
+    (with-temp-buffer
+      (save-match-data
 	(insert s "\n")
-	(setq end (point-marker))
-	(tabify start end)
-	(setq s (buffer-substring start (1- end)))
-	(delete-region start end)
-	(set-marker start nil)
-	(set-marker end nil)
-	s))))
+	(let ((start (point-min)) (end (point-max)))
+	  (funcall tabfun (point-min) (point-max))
+	  (setq s (buffer-substring (point-min) (1- (point-max)))))))))
 
 (defun mdw-examine-fill-prefixes (l)
   "Given a list of dynamic fill prefixes, pick one which matches
@@ -667,9 +661,9 @@ context and return the static fill prefix to use.  Point must be
 at the start of a line, and match data must be saved."
   (cond ((not l) nil)
 	       ((looking-at (car (car l)))
-		(mdw-tabify (apply (function concat)
-				   (mapcar (function mdw-do-prefix-match)
-					   (cdr (car l))))))
+		(mdw-maybe-tabify (apply #'concat
+					 (mapcar #'mdw-do-prefix-match
+						 (cdr (car l))))))
 	       (t (mdw-examine-fill-prefixes (cdr l)))))
 
 (defun mdw-maybe-car (p)