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bug#5511: Strange things happens with C-v in read-file-name


From: Lennart Borgman
Subject: bug#5511: Strange things happens with C-v in read-file-name
Date: Tue, 2 Feb 2010 13:23:36 +0100

I got no answer so I am sending a bug report. This is a very
irritating bug that hits me all the time.


---------- Forwarded message ----------
From: Lennart Borgman <address@hidden>
Date: Wed, Jan 27, 2010 at 11:16 PM
Subject: Strange things happens with C-v in read-file-name
To: Emacs-Devel devel <address@hidden>


I do not know if this is a bug in Emacs sources from 2010-01-26 or
something I had introduced in some way. However C-v does not work for
me in the read-file-name prompt (C-x C-f) any more. Checking the key
binding I get this in a normal buffer

 C-v is bound to `cua-paste' in `cua--cua-keys-keymap'

but in the C-x C-f prompt I get:

 C-v is bound to `cua-scroll-up' in `global-map'

I have no idea what has happened. However first I noticed some
problems with Viper (eh, yes, I use viper-mode and cua-mode
together...). I have customized viper so that C-v is not bound there,
but for some reason it showed up bound (to quote-insert) which it was
not before.

I looked a bit but could not find out what has happened so I did a
quick workaround for the viper problem. Then instead this cua-mode
problem emerged.

I do not know how to reproduce this from "emacs -Q" at the moment. And
I can't see what is wrong. All keymaps looks as I expect them to do
(including emulation-mode-map-alist). It just looks like
emulation-mode-map-alist is bypassed.

I can reproduce it with

  emacs --no-desktop
  C-x b somename RET RET
  C-x C-f C-v

The problem is there in the 2010-01-21 checkout (unpatched) but not in
2009-12-04 (patched). Unfortunately I have nothing in between there.


Anyone have any idea what is going on here? Writing this message it is
more and more clear to me there is some rather serious bug here. I
just have no idea how to track it down.







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