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Re: transient mark loss on Shift+PageUp/PageDown

From: Stefan Monnier
Subject: Re: transient mark loss on Shift+PageUp/PageDown
Date: Tue, 11 Feb 2014 20:36:58 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux)

> (shift-select-mode t)

That's the default.

> (select-active-regions nil)

Presumably this shouldn't make a difference.  If it does, we clearly
have a bug.

> (transient-mark-mode t)

That's the default.

> (cua-mode t nil (cua-base))

Nowadays, this shouldn't make a difference either, but it's a recent
change and may have bugs in that respect, indeed.

> Emacs has started losing the transient mark on Shift+PageUp/PageDown
> within the last 3 months.

Not sure what that means.  But "C-SPC ..movement.. S-prior" will keep
the region active, but the region is delimited not by where you hit
C-SPC but by where you hit S-prior.  That's by design of
shift-select-mode.  Maybe CUA behaved differently in this respect and
since CUA nowadays uses shift-select-mode rather than rolling its own
this could explain the change.

If that doesn't explain what you see, then please provide a test case
(and make it a bug report).


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