[vim] auto complete matlab flow control [for, if, while] with indentation in vim

Okay, it turns out just combining some keys is good enough :(

:inoremap <c-n><c-n> <esc>yyp^d$a
:inoremap <c-c><c-c> <esc>yyp^d$aend<esc>kyyp^d$a
 
hit ctrl-c twice (holding ctrl) in the edit mode , use ctrl-n twice to go next line

------------------------------------------------------------------- no need something huge -------------------------- "============================================================================= " matlabFlowComplete.vim v0.0 " Author: Xianmin Hu <xianmin.hu@gmail.com> " http://scriptdemo.blogspot.com " Last Change: 19-Mar-2015. "============================================================================= " "key cc : to complete for, if and while flow "key nn : go to next line with proper indentation :function! CompleteMatlabFlow() " complete for, while and if flow control with proper indentation : let isValidForWhileIf=0 : let tmpline=substitute(getline(".")," \\+"," ","g") : let tmpline=substitute(tmpline," \\+$","","g") : call setline(".",tmpline) : let tmpline=substitute(tmpline,"^ \\+","","g") : let clinesp=split(tmpline," ") : unlet tmpline : execute "normal! o" : execute "normal! kk^" : if len(clinesp) > 1 :    if clinesp[0] == "for" && len(clinesp)>2 :       let isValidForWhileIf=1 :       if len(clinesp)==3 :          let newcline="for " . clinesp[1] . " = " . clinesp[2] . ":1:" . clinesp[2] :       elseif len(clinesp)==4 :         if clinesp[2]<clinesp[3] :            let newcline=clinesp[0] . " " . clinesp[1] . " = " . clinesp[2] . ":" . clinesp[3] :         else :           let newcline=clinesp[0] . " " . clinesp[1] . " = " . clinesp[2] . ":-1:" . clinesp[3] :        endif :      elseif len(clinesp)>=5 :       let newcline=clinesp[0] . " " . clinesp[1] . " = " . clinesp[2] . ":" . clinesp[3] . ":" . clinesp[4] :      endif :      let cpos = col(".") :      let preline=split(getline(".")," ") :      if len(preline) > 0 :         if preline[0] == "for" :            let cpos += 4 :         elseif preline[0] == "while" :            let cpos += 6 :         elseif preline[0] == "if" :            let cpos += 3 :         endif :      endif :      while cpos > 1 :               let newcline = " " . newcline :               let cpos -= 1 :       endwhile :       execute "normal! j" :       call setline(".",newcline) :       execute "normal! yyp" :       execute "normal! ^d$" :       call setline(".",getline(".") . "end") :       execute "normal! jdd" :       execute "normal! kyykpd$i " :       unlet newcline :       unlet cpos :    endif " :    if (clinesp[0] == "if" || clinesp[0] == "while") && len(clinesp)>1 :       let isValidForWhileIf=1 :       let cpos = col(".") :       let preline=split(getline(".")," ") :       if len(preline) > 0 :          if preline[0] == "for" :             let cpos += 4 :          elseif preline[0] == "while" :             let cpos += 6 :          elseif preline[0] == "if" :             let cpos += 3 :          endif :       endif :       let padStr="" :       while cpos > 1 :           let padStr = " " . padStr :           let cpos -= 1 :      endwhile :      execute "normal! j^0d^" :      call setline(".", padStr . getline(".")) :      execute "normal! yyp^d$" :      call setline(".",getline(".") . "end") :      execute "normal! jdd" :      execute "normal! kyykpd$i " :      unlet padStr :      unlet cpos :   endif :   unlet clinesp : endif : if isValidForWhileIf < 1 :    execute "normal! u" :    execute "normal! $" : endif : unlet isValidForWhileIf :endfunction :function! GoMatlabNext() " go next line and use same indent from previous line : execute "normal! yyp" : execute "normal! ^d$a" :endfunction :nmap cc :call CompleteMatlabFlow()<CR>a :nmap nn :call GoMatlabNext()<CR>a

Example:
1) type "for a 1 4", then run cc in normal mode, ==>
for a = 1:4

end
2) type "for a 4 1", then run cc in normal mode, ==>
for a = 4:-1:4

end
3) type "for a 2 4 12", then run cc in normal mode, ==>
for a = 2:4:12

end
4) type "while a =4", then run cc in normal mode, ==>
while a=4

end

5) auto-indent
if you have"
%==============
if isLoop==1
for n loopStart loopStep loopEnd (run cc in normal mode)
end

it will result in:
%==============
if isLoop==1
   for n = loopStart:loopStep:loopEnd
         
   end
end