Subject: Re: [PATCH 3/3] difftool: Use eval to expand '--extcmd' expressions

From: David Aguilar <[email-masked]>
Date: Fri, 15 Jan 2010 09:59:15 -0800

On Fri, Jan 15, 2010 at 09:40:44AM +0100, Johannes Sixt wrote:
> David Aguilar schrieb:
> > -		$GIT_DIFFTOOL_EXTCMD "$LOCAL" "$REMOTE"
> > +		(eval $GIT_DIFFTOOL_EXTCMD "\"$LOCAL\"" "\"$REMOTE\"")
> 
> The new code is broken if $LOCAL or $REMOTE can contain double-quotes. How
> about this alternative:
> 
> 		eval $GIT_DIFFTOOL_EXTCMD '"$LOCAL"' '"$REMOTE"'
> 
> which I find more readable as well.

I'll resend a patch later today (can't quite right now, but will
have time later).

> What's the reason for the sub-shell? Do you want to protect from shell
> code in $GIT_DIFFTOOL_EXTCMD that modifies difftool's variables?
> 
> -- Hannes

None, really, so we can do without that as well.

Thanks for your notes,

-- 
		David