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Re: GSoC 2020: make hangs when making fonts


From: Jean Abou Samra
Subject: Re: GSoC 2020: make hangs when making fonts
Date: Wed, 1 Jul 2020 00:04:26 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0

Hi Owen,

Le 30/06/2020 à 23:45, Owen Lamb a écrit :
Apologies--I double-checked the tutorial, and it looks like I just missed a half-line of code. I put it in, and the beta looks fine now. So... disregard the beta stuff!

On Tue, Jun 30, 2020 at 2:35 PM Owen Lamb <owendlamb@gmail.com <mailto:owendlamb@gmail.com>> wrote:

    Hi Jean,

    If Fontforge is too old, it never told me so. It generated font
    files perfectly well over the last month. Running sudo apt
    updatedidn't show any newer versions.

    I can't help but notice that CI failed to build some commits on
    Friday due to font issues, the same day that my issue first showed
    itself. It might be possible that some update made a dependency
    conk out on particular setups, including LilyDev. How that would
    happen is beyond me, though.

    As a side note, when I was first learning MetaFont, I made the
    letter-beta glyph described in the tutprial to test everything
    out. The .mf file has been sitting in my VM's home directory since
    then. This week, when I opened Fontforge to make sure it worked
    properly, I absent-mindedly clicked on letter-beta.mf when it
    requested to open a file. To my surprise, Fontforge actually
    opened it up and showed it as a glyph. However, it looks
    wonky--not at all how I remember it looking when I first made the
    file. Attached is the source file and a screenshot of
    Fontforge's interpretation of the glyph. Not sure if it'll lead
    anywhere, but you never know...

    I'd like to see if my issue is reproducible on a fresh LilyDev VM
    hosted elsewhere. (In particular, my host machine's Windows 10,
    but I'm not sure that should matter.) Any volunteers willing to
    try that?

    Thanks for being patient with me,
    Owen

So git clean didn't work? At this point, unfortunately I can't help much--my
previous message was merely a shot in the dark but I understand almost nothing about fonts. Also, I'll be going on vacation pretty soon, so I won't have time
to setup LilyDev, sorry…

That said, if CI itself started to fail recently, there must be something broken in the sources, possibly in relation with a specific environement. Could you try to compile after a git checkout release/2.18.0-1? If that succeeds, you want to
go through a git bisect to find the culprit.

Sorry for not being able to provide more than this sort of advice…

Best,
Jean

PS: I guess https://gitlab.com/lilypond/lilypond/-/merge_requests/205 is going
to help in debugging.



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