> The following bug still exists in 1.19.2. I've identified the
> problem -- see below.
Sorry, but your analysis is wrong.
> > .S 27 29
> > .SP
> > foo
> > .SK
> >
> > foo.tr:4: fatal error: input stack limit exceeded (probable
> > infinite loop)
> >
> > Happens whenever vertical spacing is "too big". With ".S 27 60"
> > ".SP" can be omitted -- only the "foo" line is needed to cause
> > looping.
>
> In earlier versions, register pg*footer-size was set to 5 and
> referenced as \\n[pg*footer-size]v. In 1.18 it is set to 5v and
> referenced as \\n[pg*footer-size]u.
Using `u' is correct!
> This doesn't work because the vertical spacing (v) can change by the
> time the register is referenced.
It *does* work. If you say `5v', groff automatically converts this to
`u' units. Please read section `Measurements' in the groff info
manual for details.
The very problem is that the footer trap is called within footer trap
again. You can verify this by yourself -- just say
groff -rD9 -mtrace -mm foo.tr > foo.ps 2> foo.trace
to get a detailed trace of macro calls together with extensive mm
debugging information.
Jörgen, can you help?
I poked around in the code a bit, but my knowledge of mm is too
limited, and I wasn't able to fix it. Disabling a second call of
itself within the [EMAIL PROTECTED] macro doesn't work as expected (you now
get three pages instead of two with the above input) -- maybe the trap
should be executed within a different environment to protect against
big vertical spacing values...
Werner
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