Re: [Groff] Color and older PS printers

[Ralph Corderoy]

Hi,

Werner wrote:
> > As Ted later pointed out, the PostScript now being generated by
> > grops assumes an interpreter that can cope with setgray, etc., i.e.
> > Level 2.
> 
> This is not fully correct.  `setgray' and `setrgbcolor' are level 1.

Sorry, you're absolutely right.

Mike Bishop wrote:
> As Ted suggested, and Stewart Russell's script proved, the QMS is a
> Level 1 printer.
> 
> The "ps2ps" suggestion from Ralph Corderoy looked like it should work
> (and shame on me for not thinking of it).  However, the printer still
> fails with files processed by ps2ps /regardless/ of the language level
> chosen (ghostscript 6.53).

It might be worth adding the printing of `revision', an integer giving
the interpreter's revision, to Stewart's PostScript program.

    $ diff -u 02-sizetest.ps.orig 02-sizetest.ps
    --- 02-sizetest.ps.orig Fri Oct 25 23:17:18 2002
    +++ 02-sizetest.ps      Fri Oct 25 23:18:50 2002
    @@ -79,6 +79,8 @@
       1
     } ifelse
     str cvs show
    +llx 5 mm add lly height add ptsize 4 mul sub moveto
    +(Revision: ) show revision str cvs show
     showpage

This might help people who know about the QMS printer and firmware
deduce what the problem is.  Obviously, the simplest test-case possible
would help the GhostScript or QMS folks.

Cheers,


Ralph.