Highlight single character at column 80

Question

I am trying to highlight just a single character on a line when it is on the 80th column mark.

I am using Doom Emacs, which did it on in on a previous Emacs version, but I updated my operating system, and I can no longer get it to work.

To be clear, I only want one character at the 80th column mark to be highlighted not a ruler (fill-column-indicator-mode), and not everything after (whitespace-mode), nor the whole line, all of which seem to have solutions. Just one character.

How is this done?

Edit:

As in this image. Note: if it was a space at column 80, that would be highlighted as well.

Nothing, maybe I add a screenshot. I thought everyone used this as it came with Doom Emacs when I started using it. — Kyuvi, Jun 04 '22 at 16:19
Does [this answer](https://emacs.stackexchange.com/a/50583/14825) help? — NickD, Jun 05 '22 at 01:40
Yes and no. Looking at it closely I realized I wanted the invert of fill-column which led me to the answer — Kyuvi, Jun 05 '22 at 08:18

Kyuvi · Answer 1 · 2022-06-05T08:56:09.463

0

I think I finally found the answer, it is called "hl-fill-column", and it is a mode that does the invert of "fill-column-indicator-mode", though I suspect it uses "fill-column-indicator".

It is not listed in init.el of Doom Emacs and seems to have been removed from more recent versions, probably due to some conflicts.

edited Jun 05 '22 at 08:56

answered Jun 05 '22 at 08:28

Kyuvi

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Highlight single character at column 80

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