Re: How to switch two strings?

Hi Peng!

On Di, 01 Dez 2009, Peng Yu wrote:

> I frequently need to switch two strings. For example, if I want to
> switch 'a' and 'b', I shall use the following three commands. I'm
> wondering if there is a more convenient way to do so.
>
> :%s/b/c/g
> :%s/a/b/g
> :%s/c/a/g
>
fu! <SID>SwapWords(...) range
if len(a:000)!= 2
echomsg "SwapWords has to be called with 2 Arguments!"
return
elseif (search(a:1 ,'n') == 0 || search(a:2, 'n') == 0)
echomsg "not both args found"
return
endif

let pat=join(map(copy(a:000), '"\\%(" .v:val. "\\)"'), '\|')
:exe a:firstline . ',' . a:lastline . 's/'.pat. '/\=printf("%s",submatch(0)==a:1 ? a:2 : a:1 )/'
endfu

com! -nargs=+ -range=% Swap :<line1>,<line2>call <SID>SwapWords(<f-args>)

:Swap a b

regards,
Christian
--
:wq

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