This is a mirror of http://www.vim.org/scripts/script.php?script_id=4930

To use EightHeader just move the cursor to the line which you want to modify (hereinafter line), then call it:

EightHeader( {length}, {align}, {oneline}, {decor}, {marker}, {str} )

{length}   Length of the header.
{align}    Alignment of text.
{oneline}  If false, then underline the {line} with {decor}.
{decor}    Decorator text to fill with.
{marker}   Extra content after decotRightEnd.
{str}      Replace the content of {line} with this.

An example with {oneline} set to true (1) (s:str means the original line, see EightHeaderVars for details):

call EightHeader( 78, 'center', 1, ['l ', 'decor', ' r'], ' m', '\=" ".s:str." "' )

l decordecordecordecordeco TEXT IN THE LINE cordecordecordecordecord r m

If you don't like the default 'foldtext' you can customize it by setting to
EightHeaderFolds().

For example the closed folds looks like this by default:

+-- 45 lines: Fold level one
+--- 67 lines: Fold level two

If you would like to change it to this kind:

Fold level one................45 lines
  Fold level two..............67 lines

... then you can use this function:

let &foldtext = "EightHeaderFolds( '\\=s:fullwidth-2', 'left', [ repeat( '  ', v:foldlevel - 1 ), '.', '' ], '\\= s:foldlines . \" lines\"', '' )"

An alternative usage for example formating a vimhelp table of contents:

Options;options
Default mappings;maps
  Launch nuclear strike;apocalypse

... to this:

Options........................................................|options|
Default mappings..................................................|maps|
  Launch nuclear strike.....................................|apocalypse|

Visually select the lines, than:

call EightHeader( 78, "left", 1, ".", "\\='|'.matchstr(s:str, ';\\@<=.*').'|'", "\\=matchstr(s:str, '.*;\\@=')" )