.RD macro contains .ie without .el, breaking caller's code

On Sat, Mar 19, 2011 at 11:56:48AM -0000, jimav wrote:
> The .RD macro in /usr/share/groff/*/tmac/m.tmac causes .ie / .el pairs
> to mis-behave IN THE USER'S CODE if the optional 'string' argument is
> not passed to the .RD macro.
>
> The problem seems to be a bug in the RD macro which contains ab .ie
> without a mathcing .el (it should be just .if, not .ie). This causes
> the next .el to be seen by the roff processor to be matched with the
> .ie inside the RD macro, even though the .el is in a enclosing block,
> such as the user's code.
>
> I will attach a small demo script and a patch.

(For bug-groff: demo script is at
https://bugs.launchpad.net/ubuntu/+source/groff/+bug/738169/+attachment/1920491/+files/demoscript.sh,
while the patch is
https://bugs.launchpad.net/ubuntu/+source/groff/+bug/738169/+attachment/1920500/+files/patch.txt.)

Thanks for your report. I can reproduce it with groff 1.21, and the
same problem appears to be present in CVS HEAD, so forwarding upstream.

--
Colin Watson [<email address hidden>]

This bug was fixed in the package groff - 1.21-5

---------------
groff (1.21-5) unstable; urgency=low

  * Fix -mm .RD macro to use .if rather than .ie (thanks, James Avera;
    LP: #738169).

groff (1.21-4) unstable; urgency=low

  * Upload to unstable.
 -- Colin Watson <email address hidden> Sun, 20 Mar 2011 16:05:01 +0000