GNU bug report logs - #27427
26.0.50; Native line numbers lead to display error in company-mode popup

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Eli Zaretskii <eliz <at> gnu.org>, martin rudalics <rudalics <at> gmx.at>
Cc: alexanderm <at> web.de, 27427 <at> debbugs.gnu.org
Subject: bug#27427: 26.0.50; Native line numbers lead to display error in company-mode popup
Date: Thu, 29 Jun 2017 04:34:16 +0300

On 6/28/17 7:48 PM, Eli Zaretskii wrote:

> Dmitry, can you tell why the popup overlay is a single overlay with a
> single multiline string, and not a series of overlays, one each for
> every line shown in the popup?  I assume this caused or could cause
> more serious problems than the current implementation, but what
> problems were those?

Different tradeoffs, some different problems, and a lot of common ones 
(like text scaling, images, character widths, etc).

How would that help with the current issue?

One-line-per-overlay approach will always work worse in display-heavy 
buffers, for instance. Like the 'M-x report-emacs-bug' one. 
auto-complete (with popup.el) use this approach, however. company uses 
the other one.

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