Thanks @sebthom! I wonder what is the behavior when a file:

• is associated to a textmate which defines folding
• is associated to a language-configuration.json which defines folding
• is associated to a language server which provide folding

Is there the 3 folding strategies which are executed?

That indeed is an interesting question. I gave it a try, the TMFoldingStrategy applied the language-configuration.json foldings and the CSS language server applied it's own overlapping foldings. they get merged. even if both apply foldings for the same regions you only see one folding indicator.

It was my fear.

I think folding should be done with one folding strategy.

Use lsp at first. if not defined use language config and if it is not defined use textmate

@angelozerr I updated the code so that the folding reconciler is deactivated when an LS is available for a document.

I updated the code so that the folding reconciler is deactivated when an LS is available for a document.

Could it be instead deactivated if some other folding annotations, not coming from TM4E, are present?

Could it be instead deactivated if some other folding annotations, not coming from TM4E, are present?

@mickaelistria This is not possible I believe. The order in which reconcilers are applied is not predictable. I guess it depends on plugin load order.

The TM4E folding reconciler activation now works as follows:
If folding markers are found in a language-configuration.js file or the TextMate grammar - and no language server is associated with the TextViewer - TM4E applies custom folding based on whitespace indentation and the configured fold markers.