You can use the command
folddoopen to execute a command only on the lines that are not within a closed fold.
For example, you can remove whitespace from the end of lines with the command:
To apply this only to the lines that are currently not within a closed fold, add
folddopen, like this:
folddoopen can also be abbreviated to
If you're using Vim as your source control's diff tool, then you can use this to apply edits only to changed lines whilst viewing the diff.
Note that by default, Vim's diff mode displays a few lines before and after each changed section. So in order not to affect lines that are immediately before or after changed lines you'll need to first set
For manual edits, you might also find the
foldopen option to be useful. It defines which types of commands will cause folds to open. Although note that it does not prevent editing from taking place within the folds in the way that the
folddoopen command does.
(If you mean something else by "the lines of the files which were actually modified" then you're going to have to find a way of folding away the unchanged lines before you run the command: the easiest way is to keep an unchanged copy of the file and use vimdiff manually.)