When a fold is collapsed in vim, all of the nested headings are hidden away so that you can't see what's inside. I'm curious if anyone knows if it's possible or has a solution for foldtext function (or through another method) that can display the sections inside a fold when a fold is collapsed.
I'm looking for something that would display folds more like this:
+ -- 2000 TopSection1 " Fold Level 1
+ --- 500 TopSection1 : ChildSection1 " Fold Level 2
+ ---- 50 TopSection1 : ChildSection1 : BottomSection1 " Fold Level 3
+ --- 100 TopSection1 : ChildSection2 : BottomSection1 " Fold Level 2
+ -- 500 TopSection2 " Fold Level 1
+ --- 25 TopSection2 : ChildSection1 " Fold Level 2
I've been digging around, but have not figured out a method to make this work (or if it's possible). Any suggestions?
You will have to play with foldtext but also to parse the content of the section to fetch what you want to display.
the following command gets all folding lines without the body texts in between :
:g/{{{/
It works for this example below that contains multiple nested folds with foldmethod=marker and default ({{{) mark :
Text 1/*{{{*/
some text here
subtext 1.1/*{{{*/
some text here
subsubtext 1.1.1/*{{{*/
some text here/*}}}*/
subsubtext 1.1.2/*{{{*/
some text here/*}}}*//*}}}*/
subtext 1.2/*{{{*/
some text here
subsubtext 1.2.1/*{{{*/
some text here/*}}}*/
subsubtext 1.2.2/*{{{*/
some text here/*}}}*//*}}}*//*}}}*/
Text 2/*{{{*/
some text here
subtext 2.1/*{{{*/
some text here
subsubtext 2.1.1/*{{{*/
some text here/*}}}*/
subsubtext 2.1.2/*{{{*/
some text here/*}}}*//*}}}*/
subtext 2.2/*{{{*/
some text here
subsubtext 2.2.1/*{{{*/
some text here/*}}}*/
subsubtext 2.2.2/*{{{*/
some text here/*}}}*//*}}}*//*}}}*/
After you run the :g/{{{/ command, you get this :
Text 1/*{{{*/
subtext 1.1/*{{{*/
subsubtext 1.1.1/*{{{*/
subsubtext 1.1.2/*{{{*/
subtext 1.2/*{{{*/
subsubtext 1.2.1/*{{{*/
subsubtext 1.2.2/*{{{*/
Text 2/*{{{*/
subtext 2.1/*{{{*/
subsubtext 2.1.1/*{{{*/
subsubtext 2.1.2/*{{{*/
subtext 2.2/*{{{*/
subsubtext 2.2.1/*{{{*/
subsubtext 2.2.2/*{{{*/
If you want to redirect the result to a new buffer, then you can run :
:let @a='' | execute 'g/{{{/y A' | new | setlocal bt=nofile | put! a
It yanks the {{{ pattern to register "a", opens a new buffer and pastes the reg.
You may then need to expand the result with zR if your default is 'collapse folds'.
I use zr and zm normal commands to open and close another folding level.
I agree that zr will also show text between a folding level and a sub-level ; hence it does not fully address your question.
It's seems that a better way would be to use foldmethod=syntax and then filter all folding lines with a global (g) command based on the regex of the foldmethod syntax.
