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bug#27465: 24.5; `dired-mark-unmarked-files' with non-nil UNFLAG-P


From: Lars Ingebrigtsen
Subject: bug#27465: 24.5; `dired-mark-unmarked-files' with non-nil UNFLAG-P
Date: Sun, 21 Jul 2019 17:41:31 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Drew Adams <address@hidden> writes:

> 3. Non-nil UNFLAG-P does nothing, AFAICT.  It _cannot_ do anything.
>    Certainly it cannot unflag, which means change a deletion flag (`D')
>    to a space char.  Why?  Because the replacement is applied only to
>    lines that already have a space char (not a `D').
>
>    Its effect in that case is indeed to post a space char.  But it does
>    so only for lines that already have a space char!
>
>    This is the call:
>
>    (dired-mark-if
>      (and
>       (looking-at-p " ") ; <=== Mark (with a SPC) only if already there!
>       (let ((fn (dired-get-filename localp t)))
>         (and fn (string-match-p regexp fn))))
>      msg)

I've now made unflag-p work on the Emacs trunk.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





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