Add vim syntax file for wmfsrc2, install it in ~/.vim/syntax/wmfs.vim and put 'au BufRead,BufNewFile wmfsrc2 setfiletype wmfs' in your vimrc

wmfs.vim

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+" Vim syntax file
+" Language: WMFS Configuration file
+" Maintainer: David Delassus <david.jose.delassus@gmail.com>
+" Latest Revision: 17 October 2011
+
+if exists("b:current_syntax")
+     finish
+endif
+
+syn case ignore
+
+" Keywords
+syn keyword wmfsBlockTheme font
+syn keyword wmfsBlockThemeBars bars_width bars_fg bars_bg
+syn keyword wmfsBlockThemeTags tags_normal_fg tags_normal_bg tags_sel_fg tags_sel_bg tags_border_color tags_border_width
+syn keyword wmfsBlockThemeClient client_normal_fg client_normal_bg client_sel_fg client_sel_bg frame_bg client_titlebar_width client_border_width
+
+syn keyword wmfsBlockBar position screen elements theme
+
+syn keyword wmfsBlockTag screen name
+
+syn keyword wmfsBlockKey mod key func cmd
+
+syn keyword wmfsTodo contained TODO FIXME XXX NOTE
+
+" Matches
+syn match wmfsNumber /\S\@<!\d\+\(\.\d\+\)\?\(\S\@!\|}\@=\)/ nextgroup=wmfsNumber
+syn match wmfsNumber '\d\+' contained display
+syn match wmfsNumber '[-+]\d\+' contained display
+
+" Regions
+syn region wmfsComment start="#" end="$" contains=wmfsTodo
+syn region wmfsString start='"' end='"' contains=CONTAINED
+syn region wmfsSection start="\[" end="\]"
+syn region wmfsList start="{" end="}" contains=wmfsNumber,wmfsString
+
+let b:current_syntax = "wmfs"
+
+hi def link wmfsTodo          Todo
+hi def link wmfsComment       Comment
+hi def link wmfsSection       Statement
+hi def link wmfsList          Statement
+hi def link wmfsNumber        Number
+hi def link wmfsString        String
+
+hi def link wmfsBlockTheme         Identifier
+hi def link wmfsBlockThemeBars     Identifier
+hi def link wmfsBlockThemeTags     Identifier
+hi def link wmfsBlockThemeClient   Identifier
+hi def link wmfsBlockBar           Identifier
+hi def link wmfsBlockTag           Identifier
+hi def link wmfsBlockKey           Identifier