Decouple \gresethyphen{force} from maximumspacewithoutdash

[rpspringuel]

As is, the following will lead to different hyphenation patterns for the first and last occurrences of the score test (which can be most any score with polysyllabic words):

\grechangestaffsize{20}% this could also be \grechangedim{maximumspacewithoutdash}...
\gregorioscore{test}
\gresethyphen{force}
\gregorioscore{test}
\gresethyphen{auto}
\gregorioscore{test}

This is because \gresethyphen{force} currently changes maximumspacewithoutdash to a very large negative number and \gresethyphen{manual} changes it back to the value found in gsp-default.tex. However, in the above code block, maximumspacewithoutdash does not have that default value in the first score because the change in staff size has scaled it up.

The fix is to create a flag for \gresethyphen to manipulate rather then maximumspacewithoutdash.

I'm already working on this, I'm simply creating this issue so that I can reference it in CHANGELOG.md (instead of trying to explain everything there).

[rpspringuel]

Okay, a potentially related issue that I came across while working on this one:

Right now the sequence se(h[cs:c]g)den-(fhg[cs:c]e~)tes,(fe__) produces a double hyphen between "den" and "tes": once for the one explicitly written in the lyrics and once from the automatic algorithm. What I think should happen is that the sequence -( (i.e. an explicit hyphen in the gabc right before the opening parentheses for a note sequence) should insert \GreForceHyphen into the score and remove the - from the lyrics. This will allow the hyphen to always appear after that syllable, but never be doubled. Good idea or not? If so, should I open a new issue for it, or simply roll it into this one?

Also, since this new issue will require some modification of the command-line tool code, I'm going to need some help getting it done.

[henryso]

I can help with this. Would it be OK to change all hyphens to \GreForceHyphen or must it only be one at the end of a syllable? Which of your branches should I work against?

[rpspringuel]

If you could, work against hyphen. I just pushed a copy of it from my repository to the main one.

I would only convert a hyphen to \GreForceHyphen at the end of the syllable. Otherwise there would be a problem with, for example, hyphenated words underneath a punctum cavum: all-powerful(hr). In this case converting the hyphen to \GreForceHyphen would result in "allpowerful-" being printed in the lyrics, which isn't correct.

[henryso]

I pushed my changes into the hyphen branch. This breaks the SalveReginaOP test in a good way, but I'll let you confirm and accept that change.

[rpspringuel]

Fixed #709