🚀 go-pugleaf

Two users have reported problems with 2- and 4-bit-per-pixel devices
in Ghostscript.

Unfortunately, we did not test these facilities adequately.  There
are minor bugs in the copy_mono routines (affecting text and
halftones), and a fairly major bug in the fill_rectangle routine
(affecting graphics in colors other than black or white).

These problems do not affect any driver in the standard Ghostscript
release.  You will only see them if you write your own driver using 2
or 4 bits per pixel, or if you create a 2- or 4-bit-per-pixel image
device.

The fixes we have found are awkward to implement in Ghostscript
2.5.2, since we have made them in the context of a substantial
revision of the design of memory devices.  The next public release of
Ghostscript is planned for January; if you are being seriously
inconvenienced by these problems and can't wait till then, send us
private e-mail, and we will send you some new code and an indication
of what you might have to do to integrate it into 2.5.2.

L. Peter Deutsch :: Aladdin Enterprises :: P.O. box 60264, Palo Alto, CA 94306
ghost@aladdin.com, ...decwrl!aladdin!ghost ; voice 415-322-0103 ; fax 322-1734
	    "Implementation is the sincerest form of flattery."