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bug#23842: 24.4; Runaway background process


From: Ken Brown
Subject: bug#23842: 24.4; Runaway background process
Date: Mon, 27 Jun 2016 12:54:52 -0400
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1

On 6/27/2016 11:49 AM, Eli Zaretskii wrote:
From: Ken Brown <address@hidden>
Date: Mon, 27 Jun 2016 09:24:06 -0400
Cc: address@hidden

     ;; Show possible completions in a temporary buffer.
     (with-output-to-temp-buffer "*Completions*"
       (display-completion-list allcomp))
     ;; Wait for a key press. Then delete *Completion*  window
     (momentary-string-display "" (point))
     (delete-window (get-buffer-window (get-buffer "*Completions*")))))

It's hard to see how this could possibly work.  As soon as you click in
the *Completion* window, the window is deleted.

It could perhaps work if we didn't check the window for being a live
one.

Anyway, the code is definitely broken and should be fixed.

Yes. And there are even problems with it unrelated to the check for the window being live. For example, suppose you want to switch to the *Completions* window to select the desired completion without using the mouse. As soon as you type C-x (meant to be followed by o), the *Completions* window is gone.

Ken






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