Monks,
I have a problem with a regex that contains interpolated patterns. I would expect the following pattern match 
$string = 'string with word foo in it';
$string =~ s/(foo)/\1bar/g;

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to produce the output

string with word foobar in it

which it happily does. But, I would like the "find" and "replace" elements of the regex to be interpolated into the pattern as variables (so, say, they could be provided by user input). For example 
$string = 'string with word foo in it';
$find = '(foo)';
$replace = '\1bar';
$string =~ s/$find/$replace/g;

[download]
However this is instead giving me the output

string with word \1bar in it.

Any ideas what I can do to remedy this - I do not want to build up a string and then use eval on it.

Many Thanks

In reply to Regex prob with interpolated patterns by Anonymous Monk

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