Command Line: Add support for line continuation

[at055612]

Comand line plugin

Adds the following data attributes to allow you to show multi-line commands that have line continuation characters/strings.

• data-continuation-prompt
• data-continuation-str

This effectively changes the prompt for the continued lines as show in the updated help page for the plugin. If data-continuation-str is not set then the plugin will behave as before, though maybe it should default to \ for posix shell.

This is how it looks without this PR. It is hard to see what is a command and what is a continued line.

[github-actions]

JS File Size Changes (gzipped)

A total of 1 files have changed, with a combined diff of +129 B (+12.9%).

file	master	pull	size diff	% diff
plugins/command-line/prism-command-line.min.js	998 B	1.13 KB	+129 B	+12.9%

Generated by 🚫 dangerJS against 88cd35d

[RunDevelopment]

Thank you for the cool PR @at055612!

The general approach looks good to me. I just a few minor nits here and there.

[at055612]

While I was in there I also tweaked the styling for the prompts and output so they use opacity instead of a colour which seems to work better with the different themes.

I also prevented user-select on the shell output so you can copy just the commands which I think is what most people would want to do. Should have done this as part of the previous PR I did, sorry.

[RunDevelopment]

I agree with the color change but not with the user-select: none.

People not wanting to select the output is a pretty big assumption. If they really didn't want the output to be selectable, then they could still add that themselves. However, it's a no-go for a syntax highlighter to make the highlighted non-selectable by default.

I also want to point out that the color change should have been its own PR. The change is completely independent of the line continuation feature but I can only merge it once we have line continuations ready. You can keep the color change in this PR, but, in the future, please try to make many smaller PRs instead of one big one.

[at055612]

I agree with the color change but not with the user-select: none.

People not wanting to select the output is a pretty big assumption. If they really didn't want the output to be selectable, then they could still add that themselves. However, it's a no-go for a syntax highlighter to make the highlighted non-selectable by default.

I thought it might be contentious. I will remove it and add some words to the html page saying how to do it you want to.

I also want to point out that the color change should have been its own PR. The change is completely independent of the line continuation feature but I can only merge it once we have line continuations ready. You can keep the color change in this PR, but, in the future, please try to make many smaller PRs instead of one big one.

Yes, sorry, was a bit naughty but I figured it was a tiny change that I could sneak in. Noted.

[RunDevelopment]

Thank you for contributing @at055612!

[at055612]

@RunDevelopment Thanks for the merge. Sorry for all the back/forth.