Regex usage question

Cameron Sanders camsanders at
Tue Jan 26 12:52:17 EST 2016

Ah! I found the RxParser class methods for syntax and usage. I missed these
previously -- my apologies.

On Tue, Jan 26, 2016 at 12:40 PM, Cameron Sanders <camsanders at>

> Hi All. Nice work on Pharo!
> We are starting to use the Regex pattern matching by allowing users to
> write "rules" using patterns. For example, our data lookup processing can
> include a 'Per' rule that takes a key such as 'xPerY' and returns the value
> of (data at: #x) / (data at: #y). Until recently, all binary-operators such
> as Per were performed with a simple string matches. But in order to
> generalize, we are moving regex patterns.
> Can someone tell me where the language-spec is for Regex-Core that is
> included in Pharo? Is this in the style of sed, awk, or ... ? If possible,
> how do I indicated that I want several sub-string replacement sections?
> Thanks in advance.
> -Cam
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