On Wed, May 21, 2014 at 2:58 PM, Teemu Ikonen <[email protected]> wrote:
> Filtering a line which is currently folded results in the whole fold being
> filtered. For example, take a 2-line file like below with set
> foldmethod=marker:
>
> one {{{1
> two
>
> Issuing the command ':2!echo "foo"', when the fold is open works as
> expected, the line 'two' is replaced with 'foo'.
>
> When the fold is closed, after issuing the command both lines are replaced
> with a single line 'foo'.
>
> Is this a bug or a feature? If the latter, how can I make the filtering
> work as expected, when folds are closed?
>
It's a documented aspect of Vim. When an ex command is applied to a line
in a closed fold, the command is applied to every line in the fold. See :h
fold-behavior.
As for solving your problem, I'm not sure. Possibly you could use a custom
command or function that temporarily opens the fold, performs the
filtering, and then refolds. Possibly you could use getline() and friends
to put the target line(s) into a tempfile, perform the necessary
operations, and setline() it back in.
-Manny
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