vnoremap h :<c-u>1,'<lt>-fold<bar>'>+,$fold<cr>
That, combined with foldmethod=manual, is perfect. Thanks, Tim and Charles.
Sooo...
vnoremap h set foldmethod=manual | :<c-u>1,'<lt>-fold<bar>'>+,$fold<cr>
doesn't work :)
I think you want
vnoremap h :<c-u>set foldmethod=manual<bar>
1,'<lt>-fold<bar>'>+,$fold<cr>
(on one line in case mailers decide to bung it)
You might also want to add in
exec "norm zE"
in there after the "foldmethod=manual" to clear out any existing
folds, as switching foldmethod to manual (having been something
else previously) will keep those folds. Funky things happen when
folds overlap (as in "well-formed XML") so Vim tries to do the
smart thing with them, but it may not be what you expect...thus
you may want to use "zE" to clear out previously existing folds.
-tim
