----- Original Message -----
From: <m...@mikesolomon.org>
To: "David Kastrup" <d...@gnu.org>
Cc: <lilypond-devel@gnu.org>
Sent: Saturday, March 02, 2013 9:21 AM
Subject: Re: Alternative pixel-based regtest checker
On 1 mars 2013, at 22:33, David Kastrup <d...@gnu.org> wrote:
"Phil Holmes" <em...@philholmes.net> writes:
There's lots of improvements that could be made: parallelism, using
something other than diff, but it basically works.
Thoughts?
CMP(1) User Commands
CMP(1)
NAME
cmp - compare two files byte by byte
SYNOPSIS
cmp [OPTION]... FILE1 [FILE2 [SKIP1 [SKIP2]]]
DESCRIPTION
Compare two files byte by byte.
--
David Kastrup
As LilyPond is non deterministic, it does not draw stencils to the page in
the same order every time, which means (I think) that the same input can
generate two different PNG files. So, a bytewise comparison may trigger
false positives.
Cheers,
MS
I know from my Windows pixel-based checker that, generally, the PNG files
contain the same image, version after version (there are a few oddities with
some text, which I'm used to). I would have believed that identical images
would only be produced by identical PNG files?
--
Phil Holmes
_______________________________________________
lilypond-devel mailing list
lilypond-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/lilypond-devel
