* Use the regex in Pharo too. Should be more than adequate for what you seek.

* Create your string parsing code, in the lines of what Igor suggests, extending it for multiple line header fields

* Use other libraries, like Zinc as Sven suggests, there are others similar in other packages, bit contrived and not really what you seek I presume.

On Mon, May 27, 2013 at 10:12 PM, Thomas Worthington <thomas@technouveau.co.uk> wrote:

I've got a string which is the header section of an email. I have a regex
which will split a header field name from its data (ie, "From:
jim@null.com" becomes "From" and "jim@null.com") but some header lines are
long and have been continued by inserting a newline and one or more
spaces. Before splitting the fields I need to undo these continuations by
deleting these combinations of a newline followed by some whitespace.

This would certainly be trivial in Perl or any of the normal Linux regex
engines but I've spent hours on this today, equipped with the PBE2
chapter, and got nowhere.

How do I do this in Pharo?

Thanks,

Thomas