[Vim-latex-devel] Adding Custom Macros for packages

[Aditya M. <adi...@al...>]

Hi,
 I like the envmacro feature of vim-latex a lot and would like to use
it for other package that I frequently use. I started with defining
envmacros in the envmarco.vim file but then Mikolaj Machowski
suggested that these mappings should go in the package directory.
The scheme that I have come up with is to define the mappings within
the g:Tex_package_packagename string in the package/packagename file.
I started with the amsmath package as it is the most widely used.

So, what I wanted to do was

EAL expands to
 \begin{align}
	<++>
 \end{align}<++>

and similarly EGA expands to gahter environment.

So, I changed packages/amsmath as follows
-23 \.'env:align'
+23 \.'env:aling#EAL'

-25 \.'env:gather'
+25 \.'env:gather#EGA'

Next I modified the function Tex_ProcessPackageCommand in packages.vim
has follows

function! Tex_ProcessPackageCommand(command)
 if a:command =~ ':'
   let commandType = matchstr(a:command, '^\w\+\ze:')
   let commandName = matchstr(a:command, '^\w\+:\zs[^:#]\+\ze:\?')
   let extra = strpart(a:command, strlen(commandType.':'.commandName))
   let extrapart   = matchstr(extra,'^:\zs\w\+\ze#')
   let mapping     = matchstr(extra,'#\zs.\+\ze')
 else
   let commandType = ''
   let commandName = a:command
   let extrapart   = ''
   let mapping     = ''
 endif

 let command = s:CommandSpec_{commandType}
 let command = substitute(command, '<+replace+>', commandName, 'g')
 let command = substitute(command, '<+extra+>', extrapart, 'g')
 if mapping != ''

   if g:Tex_EnvironmentMaps
	call IMAP (mapping,'\begin{'.commandName."}\<CR>".extrapart."<++>\<CR>\\end{".commandName."}<++>", 'tex')
   endif

 endif
 return IMAP_PutTextWithMovement(command)
endfunction

This does not work properly. If I open a tex file having
\usepackage{amsmath} and type EAL nothing happens. But if I use the
menu to go to TeX-Suite -> Packages -> amsmath command -> Environment
and choose 'align#EAL' (I have to sort out the menu entry) it will
output the align environment. Now EAL will expand as desired.

What this means is that Tex_ProcessPackageCommand() is being called
only when I choose the menu item and not otherwise. So this method is
doomed.

Can anyone suggest what would be a better method to assign environment
macros to packages

Sincerely
Aditya


-- 
Aditya Mahajan, EECS Systems, University of Michigan
http://www.eecs.umich.edu/~adityam || Ph: 7342624008