[bug #68435] Using eqn in a tbl - confusing warnings

Bjarni Ingi Gislason <[email protected]> Wed, 10 Jun 2026 16:53:07 -0400 (EDT)

Newsgroups	gmane.comp.printing.groff.bugs
Message-ID	<[email protected]>

Follow-up Comment #3, bug #68435 (group groff):

  The example 'ch09.trf' contains the character '@'.

  It is processed in a "default" case in the file
"src/preproc/eqn/text.cpp", which uses

lex_error("unquoted escape");

"tbl" uses '@' in

.if n \Z@\r\D'l 0 2v'@\c

so "eqn" interprets that.

  Using '#' instead is OK, as is "`" (in the original ch09.t).

-.-

  When the 'box' format in the input file is removed, no line drawing
commands with '\Z@...@' are present, and no warnings are issued.



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