Re: palette is strange on X11 terminal on cygwin (gnuplot 4.5 ChangeLog 2010-09-30)

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

On Thursday 30 September 2010, Tatsuro MATSUOKA wrote:
> Hello
> 
> I have found the palette looks strange on X11 terminal on cygwin (gnuplot 4.5 ChangeLog 2010-09-30) 
> 
> set pm3d;set palette
> splot x*x-y*y
> 
> White stripes appear in the palette. 
> See the snapshot the below
> http://www.geocities.jp/tmgpltwin/Files/Files.html#0043
>  0043 palette101001.png, 26,212 bytes, 2010-10-01
> 
> On windows and wxt terminal, such phenomena did not occur.
> 
> How about the X11 terminal on other platforms ?
> Is the issue cygwin specific?

Thank you for pointing out this problem.  It is present on other platforms
as well.  I have added back a 1-pixel overlap of adjacent rectangles in the
colorbox.  This is what the code did before yesterday's change.
I thought it was a coding error, but it seems the overlap was an intentional
fix for the problem you have seen.  This time I added a comment saying it is
intentional.

	Ethan