[Tcl-bugs] tk-cvs: "tk ChangeLog" modified

[Donal K. F. <dk...@us...>]

Update of /cvsroot/tktoolkit/tk
In directory sfp-cvsdas-2.v30.ch3.sourceforge.com:/tmp/cvs-serv8275

Modified Files:
	ChangeLog 
Log Message:
	* generic/tkImgPNG.c (WriteIDAT): [Bug 2984787]: Use the correct
	flushing semantics when handling the last data from the image. Without
	this, many PNG readers (notably including Firefox) refuse to show the
	image and instead complain about errors.
	(ReadIDAT): Added sanity checks to ensure that when we've got bad data
	of the sorts of forms we were previously generating, we detect it and
	error out rather than silently failing.
	(WriteExtraChunks): New function to write in some basic metadata.