simultaneous GIF and PNG support

[Ethan M. <merritt@u.washington.edu>]

The following note now appears on Tom Boutell's web site:

07/21/04: gd 2.0.28 has been released. gd 2.0.28 restores support
for reading and writing GIF images. There is also a fix for a possible 
problem in gdImageTrueColorToPalette.


And, in fact, after installing gd 2.0.28 gnuplot will configure
itself to support GIF, PNG, and JPEG through the gd library.

However, our conditional code sets up GIF output through the
old gif.trm rather than the new gd.trm, so many new features
are not supported.   

For the 4.1 development I think that we should
feed 'set term gif' through the new driver also.

But what about the 4.0.<finalpatch> source?


Oh, and there's another annoyance.  
Pattern-fill broke in libgd version 2.0.27 and it's still broken
in 2.0.28.  So for the moment you must trade off gif support
for pattern-fill support.

-- 
Ethan A Merritt       merritt@u.washington.edu
Biomolecular Structure Center
Mailstop 357742
University of Washington, Seattle, WA 98195