tom arnall wrote: > from the debugger: > > p 1 if /[\Q$\E]/ > > gets: > > Unmatched [ in regex; marked by <-- HERE in m/[ <-- HERE E\]/ > > the following works: > > p 1 if /[\Q\$\E]/ > > but shouldn't \Q \E be sufficient to make perl treat '$' as a literal?
No, interpolation of variables happens before the escape sequences so that the contents of the variables can be quotemeta()ed: $ perl -le' $x = q[A.C]; $y = qr[\Q$x\E]; print $y' (?-xism:A\.C) $ perl -le' @x = qw[A . C]; $y = [EMAIL PROTECTED]; print $y' (?-xism:A\ \.\ C) By default the $\ variable contains the string "\n": $ perl -le' $y = qr[\Q$\E]; print $y' (?-xism:\ E) So after the variable is interpolated that is seen as /\Q\nE/. John -- use Perl; program fulfillment -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
