>> On 5/5/06, Suresh Govindachar wrote:
>>>
>>> I would like to color a file as follows:
>>>
>>> Everything is "normal" except for lines whose
>>> foldlevel is different from the foldlevel of both
>>> the line above and the line below. For such lines,
>>> the color should be Color_N where N is
>>> (foldlevel/2)%7 (wherein Color_0 could be red,
>>> Color_1 could be blue etc.).
>>>
I don't understand. This would mark only folds of a single line, i.e.
{{{ stuff }}}
(assuming foldmethod=marker) which is the only case where
(foldlevel(i) != foldlevel(i-1)) && (foldlevel(i) != foldlevel(i+1))
I'm also wondering if you meant to change the color only every other
fold level (i.e. color is (foldlevel/2)%7 (7 is the number of colors
available?).
As to folding readonly files, it would be possible to create a syntax
based on the line numbers of the folded lines (i.e. with \%l ), though
it might be slow for large files (hard to say how many syntax lines
with \%l will perform).
Anyway, here is a snippet which will highlight folded lines based
simply on foldlevel():
for level in range( 0, 9 )
exec 'syn clear level' . level
exec 'hi clear level' . level
endfor
let last_level = 0
let start_syn = ''
for linenr in range( 1, line("$") )
let level = foldlevel( linenr )
if level != last_level
if start_syn != ''
exec start_syn
\ . '\%' . (
linenr - 1 ) . 'l.*'
\ . '/'
endif
if level > 0
let start_syn = 'syn match
level' . ( level % 10 ). ' /'
\ .
'\%' . linenr . 'l\_.*'
else
let start_syn = ''
endif
endif
let last_level = level
endfor
