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Re: bug report

From: Colin Campbell
Subject: Re: bug report
Date: Tue, 05 Nov 2013 10:14:51 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0

On 11/05/2013 12:34 AM, Mario Bolognani wrote:
Version 2.16.2 and 2.17.95 do not compile correctly
staffs are are not separated as specified.

Sorry for the long annex, but it’s difficult for me to isolate the bug. Suspect 
it is in the type of fractions used with the feature “times”.

In order for us to help you, Mario, we need something we call a "Tiny Example". On the website, at http://lilypond.org/doc/v2.17/Documentation/web/tiny-examples we show what helps us most.

For your problem, you should begin by doing the following:
    First, make a copy of your score and put it in a safe place!
Next, if you think you might know what causes the problem, try a small change to just that area, rerun lilypond and see what changed. If that doesn't give the answer, begin removing sections of your score, one by one, until the problem stops. When you find the section which causes the problem, try making a score with just that section. If that shows the problem reliably, then start taking out parts, by shortening the music to a few bars, until the problem goes away. Finally, you will have reduced your score to just the things needed to show your problem. The last step will be to go to http://lilypond.org/doc/v2.17/Documentation/web/bug-reports and follow the steps there.

In looking over your files, I see you are making a lot of changes to spacing, particularly system-system values, and perhaps this is the cause of your problems starting around measure 89. Because there has been a lot of work done in the spacing mechanisms of LilyPond since version 2.16, and the latest development version 2.17.96 is very close to the next stable release, it would probably be a good idea for you to upgrade your LilyPond to 2.17.95, and to read the sections in the documentation which deal with spacing, quite carefully.

As a final thought, and a friendly nod to the people who develop and support Frescobaldi: the latest version has the ability to show the various spacing values in a preview mode, among other, quite wonderful ways of inspecting your work. Frescobaldi has been my favourite LilyPond editor for years, and it just gets better and better at helping me find my problems.


I've learned that you shouldn't go through life with a catcher's mitt on both 
You need to be able to throw something back.
-Maya Angelou, poet (1928- )

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