Re: Capture vs non-capture groups

[Bowie Bailey]

On 5/28/2014 12:44 PM, Arthur Glennie wrote:
Specific to spamassassin, are capture groups ever useful, or should I
always use non-capture groups?
Eg. (lit) vs. (?:lit)

This is not specific to SA, but the same in any regular expression. If 
you need to reference the captured string later, use a capture group, 
otherwise use a non-capture group.

In practice, this means that you should almost always use the 
non-capture groups with SA.

--
Bowie