[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: regexp and valid-sre?

This page is part of the web mail archives of SRFI 115 from before July 7th, 2015. The new archives for SRFI 115 contain all messages, not just those from before July 7th, 2015.

On 11/26/2013 10:19 AM, John Cowan wrote:
Michael Montague scripsit:

I propose dropping the requirement that 'regexp' can be called with
an already compiled <re>. It provides no additional functionality
and it makes the specification of 'regexp' less clear.
It provides the ability to compile repeatedly used parts of regular
expressions.  In a context where a large number of regular expressions
are in use that have factors in common, this can save a good deal of
time and possibly space.

That would require calling 'regexp' with a <sre> containing an <re>. I don't see where in the grammar that you are allowed to have an <re> as part of an <sre>.