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bug#5030: 23.1.50; Unexpected minibuffer tab completion behavior

From: Matthew Dempsky
Subject: bug#5030: 23.1.50; Unexpected minibuffer tab completion behavior
Date: Tue, 24 Nov 2009 18:24:34 -0800

On Mon, Nov 23, 2009 at 10:09 PM, Matthew Dempsky wrote:
> Instead, I expect either for that window to continue showing the
> *Completion* buffer (refreshed to display just the "aaa" and "aab"
> entries) or for that window to be deleted.  (I'd prefer the former
> behavior.)

The last patch I posted achieves the latter behavior.  Combining with
the (proof-of-concept) patch below, I seem to achieve the former
(personally more desirable) behavior.

--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -489,10 +489,11 @@ E = after completion we now have an Exact match.
             (if completed
-                ;; We could also decide to refresh the completions,
-                ;; if they're displayed (and assuming there are
-                ;; completions left).
-                (minibuffer-hide-completions)
+               (cond
+                (exact (minibuffer-hide-completions))
+                ((get-buffer-window "*Completions*" 0)
+                 (minibuffer-completion-help))
+                (t t))
               ;; Show the completion table, if requested.
                ((not exact)

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