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Re: [Groff] mom macros broken with groff 1.19.1

From: Werner LEMBERG
Subject: Re: [Groff] mom macros broken with groff 1.19.1
Date: Wed, 21 May 2003 09:49:47 +0200 (CEST)

> > I thought I was going crazy, but I've checked: mom 1.1.6 works
> > fine with groff 1.18-3.  I'm absolutely stumped as to why she's
> > broken when used with 1.19.1.  We're not talking about new stuff
> > here; these are macros that have been performing without a hitch
> > since groff 1.17-2.
> When stuck for clues it's sometimes helpful to `CVS binary chop'.
> That is, work backwards and forewards between two known dates where
> the change must have occurred, e.g. 1.18-3 and 1.19.1, doing a `cvs
> up -D ...' followed by a complete maintainer-clean, etc., and then
> a, preferably automated, test.
> Onec you've got this set up, it means you can leave it going,
> consuming CPU and some bandwidth, until it narrows the time slot
> down from, say, a month to several hours.  A `cvs diff' of those two
> times can then shed further light.

An excellent idea.  In addition, you should try to find the smallest
piece of document which exhibits the bug, then expanding the used mom
macros manually until only groff requests remain, then further
stripping down the code as much as possible.  If you have this done,
send me the snipped for further inspection.


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