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I want to push one button in Vim and fold all the code so only code up to a specific (and variable) indent level is showing. Very useful when I want to only see method names for example and not their indented routines.
The “Vim: Fold top level folds only” question has a solution to an indent level, but it requires an environment set each time you change levels.
When my cursor is at an indent level (say level 2), I want the entire file to fold to that indent level across all methods.
Is this built into Vim somewhere? Does anyone know of a good plugin that does this?
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Opening and closing foldsThe command zc will close a fold (if the cursor is in an open fold), and zo will open a fold (if the cursor is in a closed fold). It's easier to just use za which will toggle the current fold (close it if it was open, or open it if it was closed).
If you enter visual mode using v or V , then select a few lines of text using the movement keys, and type zf , Vim will create a fold comprising those lines.
Marker. Vim folds your code based on characters in the actual text. Usually these characters are put in comments (like // {{{ ), but in some languages you can get away with using something in the language's syntax itself, like { and } in Javascript files.
The problem is that when you close Vim, your artfully folded code returns to its unfolded state. The solution is quite simple - when you are ready to save your folds run the :mkview command. This will save your folds in the current buffer to your viewdir ( :h viewdir ) depending on your environment.
Configure folding to be defined by indentation:
:setl foldmethod=indent
and try the following command:
:let &l:foldlevel = indent('.') / &shiftwidth
To quickly access this command, create a mapping for it as follows:
:nnoremap <silent> <leader>z :let&l:fdl=indent('.')/&sw<cr>
No need of a plugin, it is builtin in Vim.
'foldlevel' (or shorter 'fdl') and 'foldnestmax' ('fdn') seems to be what we were looking for. You only have to set the 'foldmethod' (or shorter 'fdm') and a 'foldnestmax' (or 'fdn') in you .vimrc file:
set foldmethod=indent foldlevelstart=2 foldnestmax=2
OR the shorter version:
set fdm=indent fdls=2 fdn=2
Then you can change the fold level with direct commands: zm or zr.
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