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Re: [Nmh-workers] unseen sequence after inc into initially-empty folder

From: Paul Fox
Subject: Re: [Nmh-workers] unseen sequence after inc into initially-empty folder
Date: Tue, 02 Dec 2003 09:42:48 -0500

correction to what i just wrote:  the mailbox file i was inc'ing from
had a whole lot more than 100 messages in it.  the inc stopped at 100,
with the BUG message i quoted below.  i just did another inc from there,
and it pulled in another 319 messages.


 > no sure whether this is directly related the to the following thread,
 > but i want to pass it on before i lose the text.  i just did an inc of
 > 100 messages into an empty folder.  i'm running a CVS snapshot from 
 > around the time of the bad RC2 release.  it has the simpler of the fixes
 > being discussed applied to it.  i just got the following message:
 >     inc: BUG: called folder_realloc with lo (1) > mp->lowmsg (0)
 > i don't have time right now to look into this -- but i can provide more
 > details about my code base if anyone needs them...
 > paul
 >  > > I do agree that mp->hghmsg++ is simpler than the whole chunk of code
 >  > > (which I copied from folder_addmsg).  I do think that mp->lowmsg
 >  > > should be set to 1 if it was zero, though (since there is no message
 >  > > number 0).  Here's why:
 >  > 
 >  > Both calls to folder_realloc() in inc.c use 'mp->lowoff', not 'mp->lowmsg'
 >  > for the second argument 'int lo'.  In 'folder_read()', this value will be
 >  > at least 1, so the particular code you mention won't fail.
 >  > 
 >  > In principle, I agree wholeheartedly about rigorous maintenance of state
 >  > variables.  The whole business of dealing with the variables in 
 >  > 'struct msgs' would be better handled with a C++ class, or just 
 > subroutines
 >  > that are called when members need to be changed.
 >  > 
 >  > However, the nmh code set is a bit of jumble, and I really worry about
 >  > unintended side effects of a change that on the surface makes perfect 
 > sense.
 >  > So at this point I'd want to study the handling of 'mp->lowmsg' before
 >  > making the change.
 >  > 
 >  > 
 >  >
 > =---------------------
 >  paul fox, address@hidden (arlington, ma, where it's 28.8 degrees)

 paul fox, address@hidden (arlington, ma, where it's 27.5 degrees)

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