On 2009-04-16, Tony Mechelynck <[email protected]> wrote:
>
> Here's another proposal, which can meet every possibility, and doesn't
> loop over all characters (faster for long strings), but at the cost of
> opening a temporary window (IOW, it requires has('windows))
>
> function VirtLen(string)
> new
> 0put =a:string
> let rv = virtcol('$') - 1
> q!
> return rv
> endfunction
>
Very interesting. I'll probably have to re-use a scratch buffer to
prevent accumulation of new buffers... In any case, this made me learn
about the = register, which I didn't know about.
Before, I had sort of "cheated" using perl.
perl << EOF
use Text::CharWidth qw(mbswidth);
sub my_wcswidth {
my $str = VIM::Eval("a:str");
my $len = mbswidth($str);
VIM::DoCommand("let l:return_value = $len");
}
EOF
function! WideStringWidth(str)
perl my_wcswidth()
return l:return_value
endfunction
Thanks,
-Yozo
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