[jmsl] LilyPond issues

[jmsl at music.columbia.edu]

J Starpoli  provided me with an example score that showed the LilyPond 
layout problem. Unbalanced start/end repeats were the culprit. I have 
created a Score Operator which will check a score for this problem. 
JMSL's LilyPond exporter calls it automatically and generates a warning 
if it finds a problem.
Thanks J!
Nick Didkovsky

jmsl at music.columbia.edu wrote:
> Hello J Starpoli
>
> The LilyPond exporter is one area where I tend to discover little 
> problems and add fixes & tweaks here and there. For example, most 
> recently I was made aware that LilyPond does not handle more than one 
> text mark per measure, which spurred me to rewrite the #repeats 
> indication symbol, and that fixed some text justification problems. So 
> there are a number little fixes in my prerelease that you are welcome 
> to try out. Contact me off list and I will send it to you if you like.
>
> But your issues sound far more extreme.  There are two things I know 
> of that can cause truly crazed layout by LilyPond:
> 1) If you have unmatched repeat bars (for example, if a measure has an 
> end repeat bar but not a start repeat bar). All bets are off on this 
> one. LilyPond goes nuts. I should check for and generate a warning for 
> this issue.
> 2) If measures do not have the right sum of durations in them.  A 
> staff in a measure should either be empty (in which case the exporter 
> will substitute a measure rest), or contain exactly the right total 
> durations.  If you export to LilyPond with this problem, it will 
> generate a warning. You can check you score first with the menu item 
> "Score" -> "Check all measure durations". This will generate a report 
> in a new window which you can follow to fix the score.
>
> So my questions for you are:
> 1) Did you check your score for correct durations in each measure?
> 2) Are you using repeats and if so, are they matched?
> 3) Can you send me a problematic score offlist so I can inspect it? If 
> you contact me off list I will let you know how to best send it to me.
>
> Thanks
> Nick Didkovsky
>
> jmsl at music.columbia.edu wrote:
>> Hi List,
>>     I have been making much use of the LilyPond export feature since 
>> it was
>> recently added to JScore.  Lately, however, I am experiencing 
>> increasingly
>> frustrating results converting my scores, which do utilize a good 
>> deal of
>> dynamics, marks, and text comments.  At first, I was able to glean a 
>> couple
>> of tips from the LilyPond manual to correct certain global layout 
>> issues,
>> but my latest score has measures printing in reverse order, barlines 
>> in the
>> middle of nowhere, etc.  I have checked for measure duration errors,
>> "contiguous tempi" and the like, but so far this has not helped.  I 
>> am not
>> even sure if I should direct this post here or to the LilyPond list, 
>> but my
>> programming skills are not advanced enough to fully inspect the .ly 
>> files
>> that Jscore outputs.  I don't want to have to go back to cutting and 
>> pasting
>> screen shots of Jscore (it didn't look nearly as professional), but I am
>> limited to free- and shareware.  Any suggestions will be greatly
>> appreciated.
>>
>> Thanks,
>> J Starpoli
>>
>>
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