To provide context, I'm trying to convert .pro (chord pro) to .crd (chord) files. I'm having trouble doing something similar to the following: 
$LEFT_DELIMITER = '{\[';
$RIGHT_DELIMITER = '}\]';

$tempstr = 'This is a string containing [Am]brackets.';
$chord = 'Am';

$tempstr =~ s/[$LEFT_DELIMITER]$chord[$RIGHT_DELIMITER]//;
print $tempstr;

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Running this outputs, This is a string containing Am]brackets. instead of, This is a string containing brackets. I think I need s///; to interpolate $LEFT_DELIMITER and $RIGHT_DELIMITER, but not to attempt to interpolate $tempstr itself. Am I confused?

In reply to s/$foo// selective interpolation? by dotc

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