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bug#28855: 26.0.90; display-line-numbers-mode does not respect (line|wra


From: Dmitry Gutov
Subject: bug#28855: 26.0.90; display-line-numbers-mode does not respect (line|wrap)-prefix '(space :align-to N) text property
Date: Thu, 19 Oct 2017 01:52:31 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:56.0) Gecko/20100101 Thunderbird/56.0

On 10/18/17 7:47 PM, Eli Zaretskii wrote:

Well, "harder to implement" is very relevant here ;-)

Also, "outside of the window edge" has implications besides text
layout, and I trust Martin's judgment (which happens to match mine)
that we should try letting those sleeping dogs lie.

I get that it might have been too difficult to work out in time for Emacs 26, but here's hoping we'll get it sorted out in some later release.

In any case, this opinion of yours probably means that having
:align-to automatically update its offsets to account for the line
numbers is in the direction you wanted Emacs to go, albeit not all the
way, right?  I mean, it does make Emacs behave as if line numbers were
not part of the text area in this case.

Yes, but it might be not as beneficial when some other features do react to line numbers. Still, seems like the better choice here.

As it is now, third-party code has to adapt instead, by handling the
line numbers specially.

Yes.  But this is nothing new, it happens with almost every
display-related feature.

Not every new feature has to become a new display-related feature, though.






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