Re: [mmse] Adding a footnote yields a infinite loop.

[Sigfrid Lundberg]

Hi Branden,

You can send that manual page paragraph in  English to me, and you'll get
it back in Swedish. If you want.

Yours,

Sigfrid

On Sat, 19 Nov 2022 at 22:24, G. Branden Robinson <
g.branden.robinson@gmail.com> wrote:

> Hi Hans,
>
> At 2022-11-19T21:42:41+0100, hbezemer--- via wrote:
> > I noticed that when using mmse it seems to give an error when adding a
> > footnote.  Groff terminates with the following error message:
> > "fatal error: input stack limit exceeded (probable infinite loop)"
> > I can reproduce it with:
> > groff -Tpdf -mmse SE.groff > SE.pdf
>
> I was able to reproduce it too.  Thanks!
>
> Here's a fix.
>
> diff --git a/contrib/mm/mse.tmac b/contrib/mm/mse.tmac
> index dedfb10bb..8184b1434 100644
> --- a/contrib/mm/mse.tmac
> +++ b/contrib/mm/mse.tmac
> @@ -43,7 +43,7 @@ http://savannah.gnu.org/bugs/?group=groff.
>  .po \n[@po]u
>  .pl \n[@pl]u
>  .
> -.nr pg*footer-size 4\"                  1v+footer+even/odd footer+1v
> +.nr pg*footer-size 4v\"                  1v+footer+even/odd footer+1v
>  .\"------------------------------------------------
>  .\" Dokumentnamn
>  .ds LetDNAMN
>
> The problem is that someone (presumably macro package author Jörgen
> Hägg) left the scaling unit off of the `pg*footer-size` register
> assignment, so the size used for the page footer was 4 basic units
> instead of 4 vees.  The former value is too small by five orders of
> magnitude (a factor of twelve thousand).
>
> I hadn't really looked at mse.tmac before but I observe that it forces
> the page dimensions (and offset) to fit, I think, A4 paper in portrait
> format if they are not already set via the L, W, and O registers.  I
> suspect that will need to change to work more smoothly with groff's
> papersize.tmac macro file.
>
> I may need to add a comment about this (in English :-/) to the
> groff_mmse(7) page.
>
> In the meantime a good way to render documents requiring mmse will be as
> follows.
>
> $ groff -dpaper=a4 -mm -mmse -P -p -P a4 lorem-svenska.mm
>
> If a different paper format is desired, setting the aforementioned
> command-line registers will be important, so add the following flags.
>
>   -rLxx -rWyy -rOzz
>
> ...where xx is the paper length, yy the line length, and zz the page
> offset.  Use of scaling units ('c' for centimeters will be common, I
> reckon) is recommended.
>
> I'm attaching my own reproducer for your convenience.  Its mostly
> equivalent to yours.
>
> Regards,
> Branden
>


-- 
Sigfrid Lundberg, Ph.D., System developer
Lund, Sweden
https://sigfrid-lundberg.se/ <http://sigfrid-lundberg.se/>