How about these?

# The above shrunk a bit.
$str =~ s/%([0-9A-F][0-9A-F])/chr(hex($1))/ieg;

# - or more cryptic
$str =~ s/%([0-9A-F][0-9A-F])/sprintf("%1c",hex($1))/ieg;

[download]

Can anyone think of something that doesn't use hex?


TGI says moo

Update

Bill's post and Abigail's clever method taken together let us chop off another character or so:

s/%([0-9A-F]{2})/"chr 0x$1"/igee;

TGI - Syncretic Cretin

In reply to Re: Re: Regex to cange HTML %?? to char(0x??); by TGI
in thread Regex to cange HTML %?? to char(0x??); by Buckaroo Buddha

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