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[bug #61646] [me] line numbering doesn't work as documented


From: G. Branden Robinson
Subject: [bug #61646] [me] line numbering doesn't work as documented
Date: Thu, 9 Dec 2021 08:31:18 -0500 (EST)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Follow-up Comment #2, bug #61646 (project groff):

[comment #1 comment #1:]
> You're likely already aware, if you've been troubled by this commit before,
but it originated as a patch posted to bug-groff
(http://lists.gnu.org/r/bug-groff/2011-05/msg00000.html).  That post is useful
as it contains a test case showing the bug the commit was designed to solve.

I was not aware!  Thank you, this is helpful...though not as helpful as it
would have been if a tbl-less example had also been presented.

> The original patch already underwent some debugging before it was committed
(see thread starting at
http://lists.gnu.org/r/bug-groff/2011-07/msg00001.html, which unfortunately
omits a crucial message).

Yes, and over the years there have been several commits fixing problems in it,
including one that claimed to fix the "remaining bugs"
<https://git.savannah.gnu.org/cgit/groff.git/commit/?id=2cc968c7828263e1d2f53944f83e2d6d78bb737c>.

As my beloved Hitchens would have said, thus was a hostage given to fortune. 
More importantly, there's where a set of regression tests would have proven
valuable.

> Bug #42217 was an early victim of this commit.

Thanks for helping unearth the history of this stuff.

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