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[LDM #CZE-486853]: GFS grid question

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  • Subject: [LDM #CZE-486853]: GFS grid question
  • Date: Mon, 30 Aug 2021 10:49:36 -0600
Hi Rick,

> Something does not make sense. Using the 2 regex in ldmd.conf
> request CONDUIT|NGRID ".*.gfs*" idd.unidata.ucar.edu
> request CONDUIT|NGRID ".*.GFS*" idd.unidata.ucar.edu

The extended regular expressions in the above probably don't do what you think 
they do. Their ".*" prefix makes them pathological: they'll match exactly the 
same strings as expressions that don't have that prefix and some regular 
expression libraries will take an order of magnitude longer to match using such 
expressions. Also the "s*" and "S*" suffixes mean *zero* or more of the 
indicated character, so the expression will also match strings like "/gf/" or 
"/GF/".

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: CZE-486853
Department: Support LDM
Priority: Normal
Status: Closed
===================
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