Embedding evaluations in Perl regex

Question

So i\'m writing a quick perl script that cleans up some HTML code and runs it through a html -> pdf program. I want to lose as little information as possible, so I\'d like t

Answer 1

As per http://perldoc.perl.org/perlrequick.html#Search-and-replace, this can be accomplished with the "evaluation modifier s///e", e.g., you gis must have an extra e in it.

The evaluation modifier s///e wraps an eval{...} around the replacement string and the evaluated result is substituted for the matched substring. Some examples:

# convert percentage to decimal
$x = "A 39% hit rate";
$x =~ s!(\d+)%!$1/100!e;       # $x contains "A 0.39 hit rate"