Configuration
- Windows 7 Service Pack 1 (64-bit)
- VIM 7.4 (2013 Aug 10), 32-Bit GUI version
- cscope_macros.vim plugin from www.vim.org, version 2.0.0
The problem
The plugin maps several cscope find functions to open in horizontal or vertical splits using 'CTRL-spacebar' or <CTRL-@>, as this is how VIM recognises it according to the plugin documentation. here is a snippet from the plugin:
" Using 'CTRL-spacebar' (intepreted as CTRL-@ by vim) then a search type
" makes the vim window split horizontally, with search result displayed in
" the new window.
"
" (Note: earlier versions of vim may not have the :scs command, but it
" can be simulated roughly via:
" nmap <C-@>s <C-W><C-S> :cs find s <C-R>=expand("<cword>")<CR><CR>
nmap <C-@>s :scs find s <C-R>=expand("<cword>")<CR><CR>
nmap <C-@>g :scs find g <C-R>=expand("<cword>")<CR><CR>
However, 'CTRL-spacebar' does not work. When I look at what has been mapped <C-@> is actually translated as <nul>. For example, if I use the command :map, this is the result for the cscope plugin mapped keys.
n <nul>d :scs find d <C-R>=expand("<cword>")<CR><CR><Tab>
n <nul>i :scs find i <C-R>=expand("<cfile>")<CR><CR><Tab>
n <nul>f :scs find f <C-R>=expand("<cfile>")<CR><CR><Tab>
n <nul>e :scs find e <C-R>=expand("<cword>")<CR><CR><Tab>
The only thing I can find 'CTRL-spacebar'/<CTRL-@> (:help index) is
tag char action in Insert mode ~
-----------------------------------------------------------------------
i_CTRL-@ CTRL-@ insert previously inserted text and stop
insert
But this is not the behaviour I observe.
When I try using 'CTRL-spacebar' in insert mode all that happens is that a space is inserted at the cursor. When I use it in normal mode it seems to move the cursor to the beginning of the next word, or the next line if it is blank.
So, how do I map 'CTRL-spacebar' in VIM on windows?
