Re: regex confusion -- not matching; think it should?

[Greg Wooledge]

On Thu, Jun 20, 2013 at 12:39:56AM +0800, Chris Down wrote:
> On 20 June 2013 00:29, DJ Mills <danielmills1@gmail.com> wrote:
> > wordsplitting and pathname expansion do not occur within the
> > [[ keyword.
> 
> $ > foo
> $ [[ foo == * ]] && echo bar
> bar

That's pattern matching, which is neither word splitting nor pathname
expansion.

What DJ said was accurate, but perhaps confusing.  The *left* hand side
of an = or == or =~ operator inside [[...]] doesn't need to be quoted,
because no special things are done on the left hand side.  There are
potentially some special interpretations on the *right* hand side,
but not as many as there would be outside of [[...]].