Tip #1455: Jumps to a local/global definition by same key

created:		January 4, 2007 2:58		complexity:		basic
author:		Shotaro Aoyama		as of Vim:

When you want to jump to a definition of a variable,
what do you do?
Use C-] or gd?
C-] finds only global variables (and functions. Ctags extracts
only global objects).
On the other hand, gd detects only local variables.
I think it's a bit complicated to choice them by a situation.
So I wrote this function:

function! GoDefinition()
  let pos = getpos(".")
  normal! gd
  if getpos(".") == pos
    exe "tag " . expand("<cword>")
  endif
endfunction
nnoremap <C-]> :call GoDefinition()<CR>

This function first does gd to try to find a local definition
of a variable under the cursor, and if it failed then probably
the variable is a global variable, try :tag.

This way, you can jump to the definition of both local and
global variable by same key sequence.



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