Re: Bad clef change collision when alternating piano staves

[Ophir Lifshitz]

Hi Malte,

Thank you very much for that cleaner workaround. Now I am mainly interested
in making sure that this bug gets properly filed so that it can eventually
be fixed.

Ophir

On Mon, Oct 9, 2017 at 4:09 AM, Malte Meyn <address@hidden> wrote:

> Hi Ophir,
>
> this bug hasn’t been fixed yet but there’s a cleaner solution than
> tweaking X-offsets and X-extents: Temporarily use another voice.
>
> Cheers,
> Malte
>
> \version "2.18.2"
>
> \new PianoStaff <<
>   \new Staff = "RH" \relative a' {
>     \clef treble
>     <<
>       \new Voice {
>         s2
>         a8[ b c d]
>       }
>       \new Voice {
>         a8
>         \change Staff = "LH" \clef treble a_1
>         \change Staff = "RH"              a
>         \change Staff = "LH"              a_2
>         \clef bass
>         cis,, d e f
>       }
>     >>
>     e''2
>   }
>   \new Staff = "LH" \relative a, {
>     \clef bass
>     a8 s2..
>     e'2
>
>   }
> >>
>
> Am 09.10.2017 um 05:23 schrieb 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
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
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