feat: add code blocks with syntax highlighting

[iamanaws]

No description provided.

[nienow]

Hi @iamanaws and thank you for the pull request. This will be a useful feature. Just one question:

Instead of having two icons for code in the toolbar, I'm wondering if its better to just switch the original "code"icon to add a "code-block". The original "code" doesn't seem that useful, and we can leave the markdown shortcut of "`" if someone wants to use it.

Other than that, I will need to test more when I have time, but it looks good so far.

[iamanaws]

Instead of having two icons for code in the toolbar, I'm wondering if its better to just switch the original "code"icon to add a "code-block". The original "code" doesn't seem that useful, and we can leave the markdown shortcut of "`" if someone wants to use it.

@nienow sure, it's done!

take your time, thanks

[nienow]

what is the reason for the 5000 length limit for using code highlighting? Were you seeing any performance issues?

[iamanaws]

what is the reason for the 5000 length limit for using code highlighting? Were you seeing any performance issues?

I haven't done deep testing, but it has been a problem with other plugins in the past, so I'm just trying to prevent it.
I could review that better to analyze the impact

Syntax highlighting is disabled until we figure out performance issue:
standardnotes/markdown-pro#20 (comment)

standardnotes/plugins#41

[nienow]

I did some quick performance testing, and it does slow down around 30000 characters for me on my desktop, so I think 5000 is appropriate to account for slower devices. I will merge and we can always improve it later. Thanks again.