[Groff] Anomalous -mtrace Behaviour?

[Keith Marshall]

Has anyone else noticed the following anomalous behaviour, which I am seeing 
when I process an ms document with -mtrace?

I am trying to solve a problem in my pdfmark.tmac package, to properly handle 
the creation of links where the active region spans a page break. To achieve 
this, I have used an `am' request to add my own hook to the end of ms' 
address@hidden trap macro. This seems to achieve the desired effect, except 
that 
when I invoke -mtrace, my hook seems to be executed *twice* at each page 
break, whereas it *should* be executed only once -- as it is when -mtrace is 
not invoked.

The attached minimal test case illustrates the phenomenon.  Invoke it using

    groff -ms testcase.ms > untraced.ps
    groff -mtrace -ms testcase.ms > traced.ps

and note the difference between the two Postscript files, at the top of the 
second page.

Any ideas?

Best regards,
Keith.

testcase.ms.gz
Description: GNU Zip compressed data