TextArea docs missing syntax highlighting

[TomJGooding]

I spotted that the updated TextArea docs following the release of v0.48.0 seem to be missing the syntax highlighting. I'm not sure why yet as I've only actually only skimmed the new docs so far.

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[darrenburns]

Ah, I forgot to update the docs examples to use TextArea.code_editor(...) instead of TextArea(...) 😄

[TomJGooding]

Ah, so setting the language only works with a TextArea.code_editor? Or only if a theme has been set? I confess I've only skimmed the docs so far but that might need emphasising a bit?

[darrenburns]

TextArea.code_editor just returns a TextArea with different default values set. You can set all the same attributes on both of them. The issue is the default theme of the TextArea was changed to css, which doesn't contain syntax highlighting. Previously it was monokai, which does have syntax highlighting.

If you use TextArea.code_editor, the default theme remains monokai, so highlighting will still work. Similarly you can still do TextArea(TEXT, theme="monokai").

Perhaps the new default CSS theme should have some syntax highlighting too though.

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