[Request]: composer syntax highlighting

GeopJr / Tuba

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https://tuba.geopjr.dev/

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[Request]: composer syntax highlighting #153

Closed GeopJr closed 6 months ago

GeopJr commented 1 year ago

Describe the request

[X] markdown (only when supported)
[X] html (only when supported)
[X] highlight @ # :emoji:

see: #137

Implementation Details

[ ] This should be an option in settings.
[X] This should be only available to some fediverse backends. (Include which ones on the above field).
[X] This is client-only (and shouldn't sync with the instance).
[X] This follows the GNOME HIG.

nekohayo commented 1 year ago

In case this is helpful, you might want to take a look at GTG's code for handling highlighting of tags in semi-realtime (it waits a fraction of a second to parse stuff for performance reasons because we have a lot of costly operations happening in the backend and data format otherwise)

GTG/gtk/editor/taskview.py around line 45 has a regex for finding tags etc.
GTG/gtk/editor/text_tags.py is probably / maybe where the main stuff happens for highlighting? I'm not sure
GTG/gtk/colors.py

GeopJr commented 1 year ago

Thanks for the info!

I'll take a closer look but I had mostly (ab)using gtksourceview's syntax highlighting in mind. Instead of parsing the input and highlighting manually, we could write a custom lang file that handles @ # : and perhaps some markdown with asterisks, blockquotes, backticks, lists. Unsure if it's possible as I haven't looked further into it but I assume it will be more perfomant and safe than regex (considering the amount of rules)