FR Highlight lines that end of two spaces or don't end with two spaces

[schultzter]

So far the second best markdown editor I've found is Gnome Text Editor (Otter Wiki being my preferred editor) but one thing it does that I like is it highlights double-spaces at the end of a line.

Gnome Text is not rendering the markdown so it really doesn't matter. But OtterWiki is so it would be nice to see which lines are going to render as separate lines and which ones won't.

So I'd really appreciate if there was some kind of visual indicator. Especially where it matters, where not having two spaces will join the following line into one (i.e.: in a paragraph the two spaces at the end matter, but in code or a table they don't).

I don't know what makes more sense, to highlight the new lines or the not new lines, but either way it would be great!

[redimp]

Hey @schultzter, thanks for reaching out.

Can you add a screenshot of what you would like to see?

[schultzter]

Heres's the thought that come to mind, but make the emoji symbols a bit bigger and a different colour - like red, or orange?

Note that this only matters when next line contains text, if it's blank then there's no issue.

Pie-in-the-sky sub-FR: make it configurable so we can choose which situation to highlight!

But I would only highlight one or the other not both since it's the exception that needs to be called out.

[redimp]

Hey @schultzter, thank for clarifying!

I see the benefit from this feature, but I don't think the emojis are the best solution ... since you might just want to use these on your page. Many editors feature displaying trailing whitespaces, what do you think about this:

CodeMirror (thats the editor we are using in An Otter Wiki) already supports this. Will check how to add this feature in case you like it as solution.

[schultzter]

That looks great! Especially if it's what people are used to from other editors. Gnome Text actually does something similar, but I prefer the red you're suggesting.

Gnome Text only starts the high after one space for markdown files, but I like your idea better to highlight any space at the end of the line.

[redimp]

Hey @schultzter quick update: I'm working on polishing the CodeMirror6 PR #464, there I've added the highlighting of trailing whitespaces: