Hi Erik, Despite some cleanups late last year to make "hdtbl.tmac" quiescent when building its own examples with "groff -wall",[1] I make two observations.
1. I can reproduce your diagnostics with groff Git HEAD, and 2. with "-wall", additional diagnostics appear. Your input is simple and short enough to post inline. $ cat /tmp/dvalin.groff .\" groff -ms .mso hdtbl.tmac .LP .TBL width='1.2i 0.3i 4.5i' vl= .TR .TD colspan=3 hal=c "English cf Danish" .TR .TD half .TD - .TD halv (oldnorse: halfr ; germanic common) .ETB (I tweaked it a little.) $ ./build/test-groff -b -Ww -wall -ms -z /tmp/dvalin.groff troff: backtrace: 'hdtbl.tmac':821: macro 't*dntr' troff: backtrace: 'hdtbl.tmac':279: macro 'TR' troff: backtrace: file '/tmp/dvalin.groff':7 troff:/tmp/dvalin.groff:7: warning: tab character in unquoted macro argument troff: backtrace: 'hdmisc.tmac':97: while loop troff: backtrace: 'hdmisc.tmac':135: macro 't*getarg' troff: backtrace: 'hdtbl.tmac':928: macro 't*args' troff: backtrace: 'hdtbl.tmac':360: macro 'TD' troff: backtrace: file '/tmp/dvalin.groff':8 troff:/tmp/dvalin.groff:8: warning: end index of substring out of range, set to string length /tmp/dvalin.groff:8: Invalid horizontal alignment 'f': must be 'b', 'c', 'l' or 'r'. troff: backtrace: 'hdtbl.tmac':821: macro 't*dntr' troff: backtrace: 'hdtbl.tmac':335: macro 'TD' troff: backtrace: file '/tmp/dvalin.groff':9 troff:/tmp/dvalin.groff:9: warning: tab character in unquoted macro argument troff: backtrace: 'hdtbl.tmac':821: macro 't*dntr' troff: backtrace: 'hdtbl.tmac':335: macro 'TD' troff: backtrace: file '/tmp/dvalin.groff':10 troff:/tmp/dvalin.groff:10: warning: tab character in unquoted macro argument troff: backtrace: 'hdmisc.tmac':97: while loop troff: backtrace: 'hdmisc.tmac':135: macro 't*getarg' troff: backtrace: 'hdtbl.tmac':928: macro 't*args' troff: backtrace: 'hdtbl.tmac':360: macro 'TD' troff: backtrace: file '/tmp/dvalin.groff':10 troff:/tmp/dvalin.groff:10: warning: end index of substring out of range, set to string length /tmp/dvalin.groff:10: Invalid horizontal alignment 'v': must be 'b', 'c', 'l' or 'r'. troff: backtrace: 'hdtbl.tmac':821: macro 't*dntr' troff: backtrace: 'hdtbl.tmac':446: macro 'ETB' troff: backtrace: file '/tmp/dvalin.groff':11 troff:/tmp/dvalin.groff:11: warning: tab character in unquoted macro argument The warnings in category "tab" suggest to me a macro programming error in hdtbl itself, since no tab characters occur in your input. > The generated pdf table omits both triggering words; they're swallowed > as formatting control. I'll attach the test file as well, for > convenience. Thanks, that was helpful. > An older version of groff behaved the same, so it's not a recent > artifact, I figure. > > Joachim Walsdorff's account at Heidelberg Uni has expired, so I'll > report the anomaly here, to begin with. hdtbl hasn't been significantly developed since Joachim drifted away, many years ago now. Would someone like to take up maintainership of it? :) Regards, Branden [1] https://git.savannah.gnu.org/cgit/groff.git/log/contrib/hdtbl
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