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[bug #57538] .ne is off by one in some macro packages even when using no


From: G. Branden Robinson
Subject: [bug #57538] .ne is off by one in some macro packages even when using no other facilities of that package
Date: Thu, 18 May 2023 06:56:45 -0400 (EDT)

Follow-up Comment #19, bug #57538 (project groff):

Sorry, the environment differences were a TOTAL red herring.

I manually sorted the environments in both output files and the only
difference that remains is this.


$ diff -u need[12]s.out
--- need1s.out  2023-05-18 05:53:01.718588778 -0500
+++ need2s.out  2023-05-18 05:53:55.990392111 -0500
@@ -255,7 +255,7 @@
 pg@top 0
 pg@bottom      -648000
 pg*footer      -324000
-.t=60000
+.t=48000
 .ne=0, .trunc=3600, .trap=pg@bottom
 <beginning of page>
 1


Which is exactly what we'd expect from issuing the `ne` request one vee later.
 (At a resolution of 72000u/inch, 1v = 1/6inch = 12000u.)

Maybe ms is managing its traps better than me and mm do.


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