Re: [Groff] bug in troff?

[Werner LEMBERG]

> I think I've found a bug in troff which manifests itself when
> using refer.
> 
> [...]
> 
> ... the input that is causing this problem is:
>
> [...] 
> 
> .ds address@hidden \v'-.7m\s0+.9m'
> .ds address@hidden \v'-.9m\s'\En[.s]*7u/10u'+.7m'
> 
> any way, can anyone see what is wrong?

This is indeed a bug which I've fixed now.  Introducing `opaque'
tokens was a bad idea -- I didn't realize that e.g. \v'...\s0...' is
valid code (albeit difficult to understand).

I've replaced it with a simple global flag which is reset after a
newline in the data stream and raised if \f, \H, \R, \s, or \S is seen
(only these five escapes don't produce any output).

Please test.


    Werner