A more compact option to set the folding text

[Karmenzind]

Feature description

The lua config file is too long. Now I have to add 37 more lines to set the folding text. Please provide a more compact option to set the folding text. Like this:

default_folding_format = '{lines} custom text {start-line} blabla'

Or a function like the builtin foldtext() in vim which is only about the string itself.

Thanks a lot.

Describe the solution you'd like

Maybe you can wrap the handler function example as a default folding template accepting a format string, and provide an option to set it. It will be good enough for many people and we only need to write one line.

Additional context

No response

[kevinhwang91]

There are many context need to expose to users.

foldtext() only depend on string. but the content of the fold is actually virt_text that depends on a list of {text, highlight } . The color folds are not the standard of ufo, ufo should respect virt_text with extmarks api.

If you think 37 loc is large for you, I think the default style is not bad compared with the raw foldtext().