Yes that works, but my copy pf the O'Reilly Camel book seems to suggest otherwise :-(.

Anway, after a Good Night's sleep I worked out how I should have done it:

$regexp = <STDIN>

probably with a chomp somewhere, and then

$line =~ m?$regexp?

That seems to work fine, so thanks to all who replied.

Additional remark on May 20th

actually, that didn't work. Due to the special peculiarities of m?xxxxx? matches, you need to call reset whenever you change $regexp. Much simpler just to use a different delimiter, so here is my final versions, now working as intended:

$line =~ m#$regexp#

In reply to Re^2: Regex variables with delimiters by clerew
in thread Regex variables with delimiters by clerew

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