lgrep works like grep(1), but some command line option is incompatible.
Especially, -l option differs between lgrep and grep. I'd like to use lgrep
like:

  % lv `lgrep -l pattern files*`

lgrep -l already exists and has different meanings with grep.  If 'lgrep -l"
behavior can't be changed, "lgrep --line-number" may be acceptable for me.
grep doesn't have good support about multibyte characters, so I'll be happy
if lgrep is compatible with grep.

Thanks,
Fumitoshi UKAI