URL:
  <https://savannah.gnu.org/bugs/?59812>

                 Summary: tbl: interferes with .nm line numbering
                 Project: GNU troff
            Submitted by: gbranden
            Submitted on: Mon 04 Jan 2021 03:51:51 AM UTC
                Category: Preprocessor tbl
                Severity: 3 - Normal
              Item Group: Incorrect behaviour
                  Status: Confirmed
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

Olle Lögdahl reported an issue with tbl and .nm to the groff development
list.

https://lists.gnu.org/archive/html/groff/2020-11/msg00103.html

The attached file demonstrates that tbl re-enables line numbering when it
should not.

"...the roff that GNU tbl emits uses .nm itself.  I begin to wonder if there
is an environment problem.  Apparently using .nm yourself creates a latent
issue that is awakened by a subsequent table."

See attachment.

Problem exists in groff 1.22.4 and I suspect is much older than that.



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File Attachments:


-------------------------------------------------------
Date: Mon 04 Jan 2021 03:51:51 AM UTC  Name: tbl-with-nm.ms  Size: 253B   By:
gbranden

<http://savannah.gnu.org/bugs/download.php?file_id=50637>

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