On 07-23/20:32, Erik Christiansen wrote:
> Let's take the simplest case. For each exception to my general case of
> fdm = marker, I have begun to include in .vimrc e.g.:
>
> au BufNewFile,BufRead ~/Embedded/dev_data/my_list call SimpleFold()
>
> and one:
>
> " Fold text blocks separated by EMPTY lines, so
> " a line with whitespace unites two blocks.
> function SimpleFold()
> setlocal foldexpr=getline(v:lnum)=~'^$'&&getline(v:lnum+1)=~'\\S'?'<1':1
> setlocal foldtext=getline(v:foldstart)
> setlocal foldmethod=expr
> endfunction
>
> But that costs the labour, clutter, and maintenance nightmare of adding
> a file-specific line for each file with a non-default foldmethod.
>
> BUT, if I instead append the three lines of SimpleFold() as modelines in
> the target file, then there are errors: lnum and foldstart are unknown
> to Vim in modelines, at least in:
>
> VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Apr 2 2015 20:12:09)
> Included patches: 1-688
>
> (OK, I'm on debian, so it's old. )
>
> What I _could_ do is make the above the default fdm, and add the
> following modeline to all the currently defaulted files:
>
> vim: foldmethod=marker foldmarker={{{,}}} foldopen-=block commentstring=
>
> That seems to work. All the previously defaulted files would come out of
> the woodwork over time.
>
> OTOH, is there a better way to do this, I can't help wondering?
>
> Erik
> (Pausing to put another log on the fire. It's midwinter down under.)
>
> --
> In Bavaria, there are over 700 small biomass plants dotted around the country.
> - http://www.abc.net.au/news/2015-07-19/tasmanian-forest-industry-fired-up-about-biomass/6628822
> (Hmmm ... that recognition might be quite popular south of the Weißwurstäquator.)
>
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In modelines you have to escape the colon (if your foldexpression is more
complicated than `getline(v:foldstart)` you should consider using its own
function for readability and extendability)
The best way is to give your files proper endings and to use filetype files
(`~/.vim/ftplugin/$filetype.vim`). If you use filetypes unkown to vim you have
to use a ftdetect file (`~/.vim/ftdetect/$filetype.vim`, more info[1] - it's
really just an augroup).
[1] http://learnvimscriptthehardway.stevelosh.com/chapters/44.html
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