GNU bug report logs - #56820
outline-minor-mode replacing the first character with an arrow

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Message #74 received at 56820 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: larsi <at> gnus.org, yilkalargawworkneh <at> gmail.com, 56820 <at> debbugs.gnu.org
Subject: Re: bug#56820: outline-minor-mode replacing the first character
 with an arrow
Date: Wed, 07 Sep 2022 21:36:06 +0300

[Message part 1 (text/plain, inline)]

> This is supposed to be the Emacs answer to the various IDEs being able
> to fold code, right?  Then let's try to make it look like in those IDEs.

This is an interesting question.  I tried to search how outlines look
in other IDEs, and found such a screenshot for VSCode.

IIUC, here the first column with a red circle for a breakpoint
corresponds to Emacs fringes, the second column with line numbers
is the same as display-line-numbers-mode, and the third column is
for outline arrows.

So the column for outline indicators could be implemented the same way
as display-line-numbers-mode.  Excuse my ignorance, is
display-line-numbers-mode implemented by using margins?

[vscode-outlines.png (image/png, inline)]

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