* disp-table.el (display-table-print-array): New function.

(describe-display-table): Use it to print the vectors more pretty
(Bug#8859).

1 files changed, 19 insertions, 1 deletions

diff --git a/lisp/disp-table.el b/lisp/disp-table.el
index 7a9043a6a0a..3befedac256 100644
--- a/lisp/disp-table.el
+++ b/lisp/disp-table.el
@@ -94,9 +94,27 @@ Valid symbols are `truncation', `wrap', `escape', `control',
         (while (< i 256)
           (aset vector i (aref dt i))
           (setq i (1+ i)))
-        (describe-vector vector))
+        (describe-vector
+         vector 'display-table-print-array))
       (help-mode))))
 
+(defun display-table-print-array (desc)
+  (insert "[")
+  (let ((column (current-column))
+        (width (window-width))
+        string)
+    (dotimes (i (length desc))
+      (setq string (format "%s" (aref desc i)))
+      (cond
+       ((>= (+ (current-column) (length string) 1)
+            width)
+        (insert "\n")
+        (insert (make-string column ? )))
+       ((> i 0)
+        (insert " ")))
+      (insert string)))
+  (insert "]\n"))
+
 ;;;###autoload
 (defun describe-current-display-table ()
   "Describe the display table in use in the selected window and buffer."