On Sun, Nov 14, 2021 at 12:33:38PM +0100, Ulrich Lauther wrote:
> On Sat, Nov 13, 2021 at 12:19:09PM -0500, Peter Schaffter wrote:
> > On Sat, Nov 13, 2021, Ulrich Lauther wrote:
> > > Is there a trick to make a macro or string return a value?
snip
> > .de Pos
> > \R'foo (\\n[.d]-\\n[.v]*254+1)/72000'\\n[foo]mm/10
> > ..
> >
> > which allows you to enter
> >
> > position: \n[.d] units, \*[Pos].
> >
>
> Wow! Works nicely.
>
> But why is "R" escaped only once? \\R works too.
> And I had to add a line ".sp -1v" at the end of the macro; otherwise I get a
> blank line after position: ...
>
I now found out that the space between "foo" and the openening bracket causes
the unintended blank line.
But why?
ulrich
--
-lauther
