Re: Alternative pixel-based regtest checker

[address@hidden]

On 1 mars 2013, at 22:33, David Kastrup <address@hidden> wrote:

> "Phil Holmes" <address@hidden> 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