I want to fold lines grouped at the top of file
and matching some pattern. I use foldmethod=expr.
But vim does not behave as expected.
In the testcase, /a/. In the testfile (2) below, I want first 3
lines (a\na\na\n) folded, and nothing else folded. But vim also folds
the last a\na\n lines. I think this is vim bug.
Yakov
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(1) the code
:set foldmethod=expr foldenable foldexpr=Foo()
function! Foo()
echomsg '>>'.v:lnum.(v:lnum>1 ? ' prev='.foldlevel(v:lnum-1) : '')
if v:lnum>1 && foldlevel(v:lnum-1) == 0
return 0
else
return getline(v:lnum) =~ 'a'
endif
endfun
(2) the testfile is
-------
a
a
a
b
b
b
a
a
-------
