This is a mirror of http://www.vim.org/scripts/script.php?script_id=1461

This is an improved version of m4.vim.

If you are using the changequote() and changecom(), you can specify
the quote and comment delimiters just like vim modelines in the
following way:

<BLANK>vim-m4-syntax: quote=[,] comment=<!--,-->:

You can specify your default delimiters at your vimrc:

:let g:m4_default_quote="`,'"
:let g:m4_default_comment='#'

After the file read, you can change them in the following way:

:let b:m4_quote='<<,>>'
:let b:m4_comment=''
:call M4UpdateSyntax()