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I am trying to replace all the hex codes in an HTML/XML format file with their ASCII equivalents. For example I want to replace %20 with a space, %3A with : and so on.

Obviously there are many possibilities. I can find them all with this RE:

%\([:xdigit:]\{2\}\)

But I can't work out how to code the replace RE. I thought it would be:

\x\1

... but this just replaces the % with \x.

Here's a sample of what I am trying to achieve:

Before:

Web%20Address%3A

After

Web Address:

Any ideas?

Thanks
Mike

it seems other tools can do this better. someone suggested perl. i am using javascript, which has an unencode function which does exactly what I described.
mike