fix: map parsing manages blank spaces better

dev/cub.vim

@@ -1,23 +1,27 @@
-# Vim plugin to edit .cub files
+" Vim plugin to edit .cub files
+" Copy this file in ~/.vim/plugin/
 
 function! CubSyntax()
 if expand('%:e') == 'cub'
 
-highlight cubParameter ctermfg=blue
-syntax match cubParameter /^(NO|SO|WE|EA|F|C) .$/
-
-highlight cubDefault ctermfg=white
+highlight cubDefault ctermfg=white ctermbg=red
 syntax match cubDefault /./
 
-highlight cub0 ctermfg=grey
+highlight cubEmpty ctermbg=darkblue
+syntax match cubEmpty / /
+
+highlight cub0 cterm=bold ctermfg=grey
 syntax match cub0 /0/
 
 highlight cub1 cterm=bold ctermfg=white
 syntax match cub1 /1/
 
-highlight cubP cterm=bold ctermfg=blue
+highlight cubP cterm=bold ctermfg=yellow
 syntax match cubP /[NSWE]/
 
+highlight cubParameter cterm=NONE ctermfg=yellow ctermbg=black
+syntax match cubParameter /\v^(NO|SO|WE|EA|C|F).*$/
+
 endif
 endfunction
 autocmd BufReadPost * call CubSyntax()