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From: truesdel@nas.nasa.gov (David A. Truesdell)
Newsgroups: comp.mail.mh
Subject: Re: scan `pick ...`
Message-ID: <truesdel.666410258@sun418>
Date: 13 Feb 91 01:57:38 GMT
References: <27B72875.12190@ics.uci.edu> <1501.666374307@note2.nsf.gov>
Sender: news@nas.nasa.gov
Organization: NAS Program, NASA Ames Research Center, Moffett Field, CA
Lines: 30

jcohn@NOTE2.NSF.GOV (Jonathan Charles Cohn) writes:


>>wiseb@turing.cs.rpi.edu (G. Bowden Wise) writes:
>>>It seems that if no messages are generated from the `pick` part of
>>>the command, then it simply scans my current folder.

>>It doesn't do this on my system.  The latest release is MH 6.7.1.
>>What version are you running?

>This might be as dependent on the shell you are running as on the
>version of MH.  I am running MH 6.7.1, and see the same type of
>results.  If the backquoted pick fails, it should return a failure
>code.  Some shells might still start up the command outside the
>backquotes while others do not.

>Jonathan C. Cohn
>+1 202 357 5936

No, it has to do with the list that pick returns when it finds nothing in the
folder that matches the selection.  MH6.6, and MH6.7 return a list containing
the message number "0".  Earlier versions (i.e. MH6.1) return an empty ("")
list.  This empty list is what causes scan to produce a full listing of the
folder.

--
T.T.F.N.,
dave truesdell (truesdel@prandtl.nas.nasa.gov)

		"Abandon all hope, ye who press enter here."