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I'm programming mostly in Python/Cython and use foldmethod=syntax (and foldclose=). Overall, this works fairly well, i.e. functions/classes/methods are folded reliably mostly. However, I have one problem: folds are often opend/closed while I'm typing. Specifically,

  • While working on an indented block (usually a long multiline argument list or a long list/dict/... initialization spanning multiple lines), that very block I'm in is folded when I hit return;
  • When starting a string at the end of a block, the block below is unfolded.

This is all very annoying and distracting.

Is there a way to completely disable any auto-folding while I type?

Functionalities I want to retain:

  • Fold/unfold blocks I'm in with a command/keystroke (I'm usually using z-a for both).
  • Fold the whole document with a single keystroke/command.
  • Open new buffers fully folded (though it's not a deal-breaker if I have to do this manually).
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Since Python is an Indented language, The easier solution is to set foldmethod=indent. The crux of this solution is when you initialize list(or any code) in multiple lines, then they also get folded in a separate fold which is unwanted.

But vim does have syntax fold support for python out of the box, As suggested below in comment, running :help ft-python-indent gives:

Indent after an open paren:

   let g:pyindent_open_paren = '&sw * 2'      

Indent after a nested paren:

  let g:pyindent_nested_paren = '&sw'   

Indent for a continuation line:

   let g:pyindent_continue = '&sw * 2' 

For more details, check this answer or run :help fold-commands

  • 1
    vim does have out-of-the-box support for python.. see :help ft-python-indent – Mass Mar 13 at 18:44

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