GNU bug report logs - #6933
24.0.50; fringe-mode value of `half' is broken

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From: Chong Yidong <cyd <at> stupidchicken.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 6933 <at> debbugs.gnu.org, Drew Adams <drew.adams <at> oracle.com>
Subject: bug#6933: 24.0.50; fringe-mode value of `half' is broken
Date: Sat, 04 Sep 2010 14:34:47 -0400

Eli Zaretskii <eliz <at> gnu.org> writes:

> This happens because fringe.el has this customization form for "half"
> in the defcustom for fringe-mode:
>
> 		 (const :tag "Half width" (5 . 5))
>
> And the doc string for fringe-mode says this, among the rest:
>
>                                This command may round up the left and
>     right width specifications to ensure that their sum is a multiple
>     of the character width of a frame.
>
> So 5 is rounded up to 8, and the rest is history.
>
> I don't know why the values are 5 instead of 4.  The default fringe
> width is 8 on all GUI displays, so half of that should have been 4,
> not 5.  Maybe I'm missing some subtlety here.
>
> Can someone please check on X whether (fringe-mode '(4 . 4)) does TRT?
> If it does, I think we should use 4 instead of 5 in the above
> defcustom.

(4 . 4) seems to work fine for me on X.

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