This is easy to do when typing code directly into a node, you would catch this quickly but for the new monks:
$str = "testing\";
The backslash in this case will escape the double quote (") and with warnings turned on you get this:
Can't find string terminator '"' anywhere before EOF at C:\b\perlmonks\regex\1045512.pl line 4.
Without warnings you get "Bareword found where operator expected at ..."
my $str = "testing\\";
print "matched!" if $str =~ /\\$/;
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