[bug #63731] [tbl] does not diagnose excessive vertical lines at beginning of row definition

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?63731>

                 Summary: [tbl] does not diagnose excessive vertical lines at
beginning of row definition
                 Project: GNU troff
               Submitter: gbranden
               Submitted: Mon 30 Jan 2023 02:57:19 PM UTC
                Category: Preprocessor tbl
                Severity: 3 - Normal
              Item Group: Warning/Suspicious behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Mon 30 Jan 2023 02:57:19 PM UTC By: G. Branden Robinson <gbranden>
Affects groff 1.22.4.

Input:

$ cat EXPERIMENTS/no-diag-on-three-leading-vlines.roff
.TS
L|||.
foo
.TE
.TS
|||L.
foo
.TE
.pl \n(nlu


Output:


$ nroff -t EXPERIMENTS/no-diag-on-three-leading-vlines.roff 
tbl:EXPERIMENTS/no-diag-on-three-leading-vlines.roff:2: more than 2 vertical
bars between key letters
grotty:<standard input> (EXPERIMENTS/no-diag-on-three-leading-vlines.roff):19:
character above first line discarded
grotty:<standard input> (EXPERIMENTS/no-diag-on-three-leading-vlines.roff):23:
character above first line discarded
foo │
│foo


(The diagnostics from grotty are bug #63449, resolved in groff Git.)

We should have gotten complaints about both tables, but didn't.







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