This program has been tested on a HP9000/720 with HP-UX A.08.07
In this environment, neither lint -u nor gcc -Wall produce any messages.
If you encounter any errors or need to make any changes to port it
to another platform, please contact me.
-B flag won't work if there's an Extension between the Global Color
Table and the Image Descriptor (or Graphic Control Extension). If -V
has been specified, a Warning Message will be displayed.
Will be fixed in 2.0
Always outputs GIF89a. Shouldn't do this if version is newer.
-D option may output changed data instead of original data, use
with caution, best only with then -L option.
Permission to use, copy, modify, and distribute this software for any
purpose and without fee is hereby granted, provided that the above
copyright notice appears in all copies. This software is provided "as is"
and without any express or implied warranties.
Version 1.11 - 21.7.94
Moved Plain Text Extension to the Extensions section where it belongs
Accept Unknown Extension Labels
Incorporated MS-DOS port by email@example.com (Enzo Michelangeli)
Added -o and -e options to redirect stdout and stderr
Added -D debug flag
Version 1.10.2 - 22.6.94
Support for -DRGBTXT flag
Version 1.10.1 - 21.6.94
Different rgb.txt file FreeBSD/386BSD
Version 1.10 - 19.6.94
Added option to change a color in the global color table
Added option to change the color for the transparent color index
Version 1.9.1 - 7.6.94
Different rgb.txt files for X11 and Open Windows
Version 1.9 - 1.6.94
Fixed a bug which caused color names to be rejected.
Version 1.8 - 30.5.94
Accept #rrggbb style arguments.
Do nothing if rgb-color not found in GIF.
Version 1.7 - 16.5.94
Added -l option to only list the color table.
Added -L option for verbose output without creating a gif.
Added -b option to change the background color index.
Display all matching color names for color table entries.
Fixed a bug which caused bad color names if rgb.txt starts with
Doesn't use strdup anymore.
Fixed =& bug on dec machines.
Version 1.6 - 5.4.94
Added color names recognition.
Version 1.5 - 15.3.94
Added basic verbose output to analyze GIFs.
Version 1.4 - 8.3.94
Fixed off-by-one bug in Local Color table code.
Added option to add or remove a comment.
Transparency is no longer the default.