Re: [Groff] Problem with \H

[Werner LEMBERG]

> > I wonder how
> > 
> >   \H'+5'test \H'+5'test
> > 
> > looks like with the original troff (using the PostScript device)...
> > Is the height of the second `test' larger than the first one?
> 
> No.  (Solaris troff.)

Looking into Plan 9's source code, I see the same.

> 
> > The same for \S: Is the second `test' more slanted than the first one?
> 
> No.

Ditto.

> Manual says ("+-" to be read as the character "\(+-"):
> 
>   The function \S'+-N' causes the font to be slanted
>   by +-N degrees.
>   ...
>   The function \H'+-N' sets the height of the current
>   font to N, or increments it by +N, or decrements it
>   by -N; if N=0, the height is restored to the current
>   point size.
> 
> The first statement is quite clear: no increments.

The notation \S'+-N' explicitly means increments, so the
documentation is wrong.

> The second is ambiguous: increment/decrement relative
> to what?  Apparently the current point size.

Exactly.


    Werner