Using greek letters breaks latin glyphs in markup

[Frank Steinmetzger]

Dear list readers

I think I may have asked this very question already in the past, but without
success. This time, however, I can provide more specific info to it.

It boils down to this: if I use greek letters in a \markup, the corresponding
latin character (alpha -> a, gamma -> g, etc.) is rendered differently – it
appears not smooth, but more pixelated. Please see the attached screenshot
from Okular in which the greek α, χ and ε have an influence on a, c and e,
respectively.

This only happens if I use a different font from LilyPond’s default. So far
I tested it with Libertine (with which I encountered it originally) and
Gentium and both show this problem.

Any idea why this is happening and, possibly, what can be done about it on my
end (apart from using the default font)?


This is the code for the screenshot:
------------>%-----------------------
\version "2.16"

\paper {
        #(define fonts
        (make-pango-font-tree
                "Linux Libertine"
                "Sans"
                "Mono"
        (/ 20 20)))
}
\markup\column{
        "α χ  ε"
        "abcdef"
}
------------%<-----------------------

Thanks for your time.
--
Gruß | Greetings | Qapla’
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Do you steel taglines, too?

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