Hi Thomas, Sorry for the delay in getting back to this.
At 2024-04-24T10:23:19+0200, Thomas Dupond via wrote: [...] > >> > At 2024-04-21T23:52:48-0500, G. Branden Robinson wrote: > >> > > For mm, what I would do is set up the mounting positions to > >> > > replace Times with Helvetica. > >> > > > >> > > .fp 1 HR > >> > > .fp 2 HI > >> > > .fp 3 HB > >> > > .fp 4 HBI [...] > > This question is naive but why isn’t .fam implemented as a wrapping to > the .fp macro like: > > .de fam > .fp 1 R \\$1R > .fp 2 I \\$1I > .fp 3 B \\$1B > .fp 4 BI \\$1BI > .. As Deri and Peter recently (re-)taught me in Savannah ticket traffic, groff's style mechanism is actually a flexible one. These four faces are conventional, and set up by default on all devices, but you can define your own style names and assign them mounting positions, and they will then combine with the default family as R, I, B, and BI do. In fact, you can even disable the stock four styles. mom(7) exercises this mechanism of customizing styles. See <https://www.schaffter.ca/mom/momdoc/appendices.html#fonts>, section "The simpler way with mom". > Of course this doesn’t implement the capability of going to the > previous font family with an empty .fam call. Right. A macro package would have to save the identity of the previous default family[1] itself, because the formatter exposes no access to this datum. Regards, Branden [1] I say "default family", and in recent months have updated our documentation accordingly, instead of "current family" because of the following scenario. .fam H \" select Helvetica family Hello, .ft TR \" select Times roman font world! What font family is now "current"? Is the "current family" the one we will see on the page when we add a character for troff to format, or something else? I say "default" family because that's what it is; the family to be combined with an _abstract_ style selected by the user (which might not happen) as opposed to the identity of the family selected for currently formatted text.
signature.asc
Description: PGP signature
