On Wed, Sep 27, 2000 at 08:15:53AM -0700, Dave Storrs wrote:
> Both \1 and $1 refer to what is matched by the first set of parens in a
> regex. AFAIK, the only difference between these two notation is that \1
> is used within the regex itself and $1 is used outside of the regex. Is
> there any reason not to standardize these down to one notation (i.e.,
> eliminate one or the other)?
\1 can be used on the LHS of a s/// whereas $1 there probably won't do
what you expect. Also, \1, \2, \3 only takes you as far as \9 ;-)
If $1 could be made to work properly on the LHS of s///, I'd vote for
that being The Way.
-Scott
--
Jonathan Scott Duff
[EMAIL PROTECTED]
