Re: Bad clef change collision when alternating piano staves

[Ophir Lifshitz]

Hello,

Can someone please triage this bug?

Thanks again,
Ophir

On Sun, Jan 31, 2016 at 4:57 PM, Ophir Lifshitz <address@hidden>
wrote:

> Hello,
>
> Would it be possible to triage this bug I reported 3 months ago?
>
> Thanks,
> Ophir
>
> On Fri, Jan 1, 2016 at 10:03 AM, Ophir Lifshitz <
> address@hidden> wrote:
>
>> Hello again,
>>
>> Has anyone been able to triage this bug yet?
>>
>> Thanks,
>> Ophir
>>
>> On Wed, Oct 28, 2015 at 11:31 AM, Ophir Lifshitz <
>> address@hidden> wrote:
>>
>>> I was browsing through recent bugs on the new tracker and found this
>>> one: http://sourceforge.net/p/testlilyissues/issues/4642/
>>>
>>> I wonder whether it is related?
>>>
>>> Ophir
>>>
>>> On Tue, Oct 27, 2015 at 6:15 PM, Ophir Lifshitz <
>>> address@hidden> wrote:
>>>
>>>> And so in that case, probably something like \hideNotes r ...
>>>> \unHideNotes will be sufficient.
>>>>
>>>> Ophir
>>>>
>>>> On Tue, Oct 27, 2015 at 6:10 PM, Ophir Lifshitz <
>>>> address@hidden> wrote:
>>>>
>>>>> Hello again,
>>>>>
>>>>> Yes, thank you Pierre. I believe that will work temporarily, but I'm
>>>>> still mostly convinced it's a bug that needs to be fixed.
>>>>>
>>>>> For example, change the space s4. near the bottom of the file between
>>>>> three eighth rests r r r (clef change is – mostly – properly spaced)
>>>>> and two rests plus a space r r s (collision). It seems that Lilypond
>>>>> can't detect the RH's note's presence in the 4th position of the LH staff,
>>>>> and it only detects the presence of a LH note/rest starting somewhere in
>>>>> the 4th position.
>>>>>
>>>>> Ophir
>>>>>
>>>>> On Tue, Oct 27, 2015 at 6:01 PM, Pierre Perol-Schneider <
>>>>> address@hidden> wrote:
>>>>>
>>>>>> Oops, sorry, too fast reading...
>>>>>>
>>>>>> How about :
>>>>>>
>>>>>> \version "2.19.22"
>>>>>> \new PianoStaff <<
>>>>>>     \new Staff = "RH" \relative a' {
>>>>>>         \clef treble
>>>>>>         a8
>>>>>>         \change Staff = "LH" \clef treble a_1
>>>>>>         \change Staff = "RH"              a
>>>>>>         \change Staff = "LH"
>>>>>>         \tweak X-extent #'(0 . -2)
>>>>>>         \tweak X-offset #-3.3 a_2
>>>>>>         \clef bass
>>>>>>         \change Staff = "RH"
>>>>>>         \tweak X-extent #'(-7 . 1.3) a
>>>>>>     }
>>>>>>     \new Staff = "LH" \relative a, {
>>>>>>         \clef bass
>>>>>>         a8 s4. cis8_3
>>>>>>     }
>>>>>> >>
>>>>>>
>>>>>>
>>>>>>
>>>>>> 2015-10-27 22:37 GMT+01:00 Ophir Lifshitz <address@hidden
>>>>>> >:
>>>>>>
>>>>>>> Hi Pierre,
>>>>>>>
>>>>>>> I'm afraid that override only makes the issue worse by shifting the
>>>>>>> clef left. I might have been unclear, but the clef change belongs after
>>>>>>> note 2 and directly before the sharped note 3, and not in the small 
>>>>>>> space
>>>>>>> between notes 1 and 2. Shifting it left makes it look like note 2 is
>>>>>>> notated in bass clef, but it is not. Ultimately more space is needed on 
>>>>>>> the
>>>>>>> staff between notes 2 and 3 to fit the bass clef before note 3.
>>>>>>>
>>>>>>> Ophir
>>>>>>>
>>>>>>> On Tue, Oct 27, 2015 at 5:28 PM, Pierre Perol-Schneider <
>>>>>>> address@hidden> wrote:
>>>>>>>
>>>>>>>> Hi Ophir,
>>>>>>>>
>>>>>>>> Try :
>>>>>>>> \once\override Staff.Clef.X-extent = #'(0 . 3.5) \clef bass
>>>>>>>>
>>>>>>>> Cheers,
>>>>>>>> ~Pierre
>>>>>>>>
>>>>>>>> 2015-10-27 22:05 GMT+01:00 Ophir Lifshitz <
>>>>>>>> address@hidden>:
>>>>>>>>
>>>>>>>>> Hello all,
>>>>>>>>>
>>>>>>>>> I believe there is a bug in making space for clef changes. You can
>>>>>>>>> find the
>>>>>>>>> MWE here: http://lilybin.com/gs2oks/7
>>>>>>>>>
>>>>>>>>> The notes labeled 1 and 2 on the lower LH staff are both notated
>>>>>>>>> in treble
>>>>>>>>> clef. But because space wasn't made for the bass clef change, the
>>>>>>>>> bass clef
>>>>>>>>> misleadingly appears slightly before note 2. I would have instead
>>>>>>>>> expected
>>>>>>>>> to see a lot of space made between notes 2 and 3 where the clef
>>>>>>>>> can fit
>>>>>>>>> properly. The clef change before note 1 shows that Lilypond can
>>>>>>>>> indeed make
>>>>>>>>> space for clef changes.
>>>>>>>>>
>>>>>>>>> If not a bug, what is the best way to fix the collision?
>>>>>>>>>
>>>>>>>>> Thanks in advance,
>>>>>>>>> Ophir
>>>>>>>>>
>>>>>>>>> P.S. The MWE was gradually simplified (1 <
>>>>>>>>> http://lilybin.com/gs2oks/1> 2
>>>>>>>>> <http://lilybin.com/gs2oks/2> 3 <http://lilybin.com/gs2oks/3> 4
>>>>>>>>> <http://lilybin.com/gs2oks/4> current <http://lilybin.com/gs2oks/7>)
>>>>>>>>> in
>>>>>>>>> case anyone is curious for the source
>>>>>>>>> <https://www.youtube.com/watch?v=3Dw1Huh_Tfg&feature=
>>>>>>>>> youtu.be&t=2m51s>.
>>>>>>>>> Also attached are the source and an image in case of linkrot.
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> bug-lilypond mailing list
>>>>>>>>> address@hidden
>>>>>>>>> https://lists.gnu.org/mailman/listinfo/bug-lilypond
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>