On 09/29/2011 01:58 AM, Benjamin R. Haskell wrote:
On Wed, 28 Sep 2011, AK wrote:

Hi, I'm trying to write a small function that is called when I press
tab key and checks if current line is empty; if it is, it should
insert a tab, and if not, it should call two other functions. Here's
the example of what I came up with, which does not work right:

function! DoTab()
if match(getline('.'), '^\s*$') != -1
call feedkeys("\<tab>") | return ''
else
call CloseMenu()
call feedkeys("\<c-r>=TriggerSnippet()\<cr>") | return ''
endif
endfu
ino <silent> <tab> <c-o>:call DoTab()<CR>

CloseMenu is another function I have that closes a popup menu if it's
open, TriggerSnippet is a snipmate function that expands current snippet.

Wanting to either insert something or run another function is a good
case for <expr> mappings. It depends a bit on how TriggerSnippet works,
the following might be all you need:

fun! DoTab()
if getline('.') =~ '^\s*$'
return "\<tab>"
else
call CloseMenu()
return TriggerSnippet()
endif
endfun
ino <expr> <tab> DoTab()


I get 'E523: not allowed here' in TriggerSnippet. I tried :set secure ,
but that did not help.

 -ak

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