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Re: old-straight-flag + smaller Stem.thickness gives no output and huge


From: David Kastrup
Subject: Re: old-straight-flag + smaller Stem.thickness gives no output and huge overflow
Date: Mon, 27 May 2013 20:32:15 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux)

David Kastrup <address@hidden> writes:

> David Kastrup <address@hidden> writes:
>
>> Mike Solomon <address@hidden> writes:
>>
>>> On 27 mai 2013, at 19:34, David Kastrup <address@hidden> wrote:
>>>
>>>> David Kastrup <address@hidden> writes:
>>>> 
>>>>> Karol Majewski <address@hidden> writes:
>>>>> 
>>>>>> The following code gives:
>>>>>> warning: cannot fit music on page: overflow is 1096.382978
>>>>>> and no output. Perhaps it's a bug?
>>>> 
>>>> 6f13ef4a292625c1a9d528ac88aec98071ba6388 is the first bad commit
>>>> commit 6f13ef4a292625c1a9d528ac88aec98071ba6388
>>>> Author: Mike Solomon <address@hidden>
>>>> Date:   Fri Mar 22 07:29:57 2013 +0100
>>>> 
>>>>    Permits all positive and zero-length buildings in skylines (issue 3161)
>>>
>>> Ahhhhh crap. I'll look into it this week.
>>
>> This should prove interesting.  The condition for triggering this
>> problem seem so utterly arbitrary.  For what it is worth, the overflow
>> on my computer is
>> warning: cannot fit music on page: overflow is 1636.348835
>> namely quite different.
>>
>> So both the way to trigger this bug as well as the concrete output seem
>> _way_ arbitrary.
>
> It gets more interesting.  Manually "bisecting" on the value gives me an
> overflow of
>
> warning: cannot fit music on page: overflow is 935.595183
>
> for
>
>     \override Stem.thickness = #1.20005

Oh, and the smaller overflow as opposed to thickness 1.2 may be
explained since only one of the two systems goes off-page.

This is totally bonkers.  One could not make this kind of behavior up.

-- 
David Kastrup




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