Subject: tabulated-list-print-col nicer help-echo
From: Jonas Bernoulli <[email-masked]>
To: [email-masked]
Date: Sat, 26 Jan 2013 22:14:37 +0100
List-Id: <debbugs-submit.debbugs.gnu.org>

`tabulated-list-set-col' adds a help-echo property to the "labels" that
it inserts.  With this patch this is done a bit differently:

* If the label already has a help-echo property then use that help-echo
  instead of overriding it with a generic one.  This allows displaying
  additional information when it makes sense.
* Otherwise propertize as before but don't prefix the help-echo with the
  column name.  That information is not really useful.

From bbe78adda05897c892ea3c3687912a4c056d6fe1 Mon Sep 17 00:00:00 2001
From: Jonas Bernoulli <[email-masked]>
Date: Sat, 26 Jan 2013 22:03:09 +0100
Subject: [PATCH] lisp/emacs-lisp/tabulated-list.el (tabulated-list-print-col):
 don't prepend help-echo with column name, if help-echo is already predefined
 don't replace it

---
 lisp/emacs-lisp/tabulated-list.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lisp/emacs-lisp/tabulated-list.el b/lisp/emacs-lisp/tabulated-list.el
index 94b3c15..13fc730 100644
--- a/lisp/emacs-lisp/tabulated-list.el
+++ b/lisp/emacs-lisp/tabulated-list.el
@@ -363,7 +363,6 @@ Return the column number after insertion."
          (right-align (plist-get props :right-align))
 	 (label     (if (stringp col-desc) col-desc (car col-desc)))
          (label-width (string-width label))
-	 (help-echo (concat (car format) ": " label))
 	 (opoint (point))
 	 (not-last-col (< (1+ n) (length tabulated-list-format))))
     ;; Truncate labels if necessary (except last column).
@@ -379,7 +378,9 @@ Return the column number after insertion."
         (setq width (- width shift))
         (setq x (+ x shift))))
     (if (stringp col-desc)
-	(insert (propertize label 'help-echo help-echo))
+	(insert (if (get-text-property 0 'help-echo label)
+		    label
+		  (propertize label 'help-echo label)))
       (apply 'insert-text-button label (cdr col-desc)))
     (let ((next-x (+ x pad-right width)))
       ;; No need to append any spaces if this is the last column.
-- 
1.8.0.1