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From: Alp Aker <alptekin.aker@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 18417@debbugs.gnu.org, Dmitry Gutov <dgutov@yandex.ru>
Subject: bug#18417: 24.3.93; posn-at-point confused by fill-column-indicator
Date: Sun, 7 Sep 2014 15:52:34 -0400	[thread overview]
Message-ID: <CACxch4pJF1HhtpRM_CXOJfRw_F1ytFkkzEPqUJ=i8gz8Zo3_rQ@mail.gmail.com> (raw)
In-Reply-To: <83zjebb4i2.fsf@gnu.org>

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> There are 2 special characters, u+e000 and u+e001, each one has a
> display-table setting to display it as something else, then there's an
> empty overlay with an after-string made of these special characters
> that has a display property with :align-to, followed by an image...
> And I'm not sure I listed all of the "features".  (The 'cursor'
> property I omitted intentionally, because I believe I know why they
> are needed.)  Why each one of these is needed?

At least some of that is cruft, as at one point I was trying to support all
of v22, v23, and v24, and there were various differences in the behavior of
overlay-strings (as well as the 'cursor property) among those versions.
I'll try to simplify the implementation and see if I can come up with
something that doesn't trigger any UB in the display engine.

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  reply	other threads:[~2014-09-07 19:52 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-06  9:43 bug#18417: 24.3.93; posn-at-point confused by fill-column-indicator Dmitry
2014-09-07 17:22 ` Eli Zaretskii
2014-09-07 18:55   ` Dmitry Gutov
2014-09-07 19:43     ` Eli Zaretskii
2014-09-07 19:52       ` Alp Aker [this message]
2014-09-07 19:56         ` Eli Zaretskii
2014-09-08  3:11   ` Alp Aker
2014-09-09 14:38     ` Eli Zaretskii

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