vim scripting "i want replacement for tnext in cscope" -

i want replace :tnext command cscope not working expectation.

1) below figure shows code working expected. can reach 2nd instance of symbols.

function mycounter()      if !exists("s:counter")         let s:counter = 1         echo "script executed first time"     else         let s:counter = s:counter + 1         echo "script executed " . s:counter . " times now"     endif endfunction  nmap <space>w :ls<cr> nmap <space>i :call mycounter() nmap <space>n :cs find s <c-r>=expand("<cword>")<cr><cr>2<cr> 

2) below code not working

function mycounter()     if !exists("s:counter")         let s:counter = 1         echo "script executed first time"     else         let s:counter = s:counter + 1         echo "script executed " . s:counter . " times now"     endif endfunction  nmap <space>w :ls<cr> nmap <space>i :call mycounter() nmap <space>n :cs find s <c-r>=expand("<cword>")<cr><cr><c-r>=str2nr(s:counter)<cr> 

the difference between 1 , 2 code snippet =str2nr(s:counter) i.e., dynamic calculation of n instance of symbol upon user press n

before pressing space+n press space+i

please suggest me why 2nd code snippet not working .

you try

nmap <space>n :exec "cs find s" expand("<cword>") "\| norm" str2nr(s:counter) 

you seem using <c-r>=str2nr... in normal mode, not work.

disclaimer: haven't been able test whethr above approach can work.

edit

you might want use cscopetag setting:

                        *cscopetag* *cst* if 'cscopetag' set, commands ":tag" , ctrl-] "vim -t" use |:cstag| instead of default :tag behavior.  effectively, setting 'cst', search cscope databases tag files.  default off.  examples: >     :set cst     :set nocst 

this should give rich set of commands working tags, might give ways want (:tjump, :tnext etc)