Re: string type in vim script language

On Tue, Feb 1, 2011 at 6:21 PM, shuda Li <lishuda1980@gmail.com> wrote:
> Hi, all
>
> I'm new to vim script language and struggling to code a simple
> function to switch between header and source.
> Here are the
>
> function! SwitchSourceHeader()
>    if (expand ("%:e") == "cpp" || expand ("%:e") == "c" || expand
> ("%:e") == "cc" )
>        find %:t:r.h
>    elseif ( expand ("%:e") == "h" )
>        let filename = ""
>        filename = expand(%:t:r)
>        filename = filename + ".cpp"
>        if filereadable( filename )
>            find %:t:r.cpp
>        else
>            echo " cannot find source file. "
>        endif
>    else
>        echo "file type unrecognized."
>    endif
> endfunction
> nmap ,s :call SwitchSourceHeader()<CR>
>
> However, I get the following
>
> Error detected while processing function SwitchSourceHeader:
> line 5:
> E492 Not an editor command: filename = expand(%:t:r)
>
> I am wondering if anyone can point out a correct way for doing this.

You forgot the quotes :) ..and the "let" keyword.. It should instead be:
let filename = expand("%:t:r")
let filename = filename + ".cpp"

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