Re: [Groff] W.: [bug #42978] tbl does not restore the tab settings

[Ralph Corderoy]

Hi Carsten,

> tbl does use ".ta".

Right, e.g. runtabs() in
http://plan9.bell-labs.com/sources/plan9/sys/src/cmd/tbl/t7.c called
from http://plan9.bell-labs.com/sources/plan9/sys/src/cmd/tbl/t8.c

> If someone creates a document and sets .ta to some value, how should
> tbl reset this value?

Yes, I don't think it can be done in portable troff as the current
positions aren't available to be saved.

> Yes, it should be documented that tbl does "overwrite" the .ta setting
> without restoring it.

Yep.

Cheers, Ralph.