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Re: 𝜖 implies large line spacing

From: Alexis
Subject: Re: 𝜖 implies large line spacing
Date: Mon, 20 Mar 2017 22:44:09 +1100
User-agent: mu4e 0.9.19; emacs 26.0.50

Florian Weimer <> writes:

> * Marco Wahl:
>> Florian Weimer <> writes:
>>> * Marco Wahl:
>>>> Actually I'm not so happy with those large line spacings.
>>>> I tried some fonts (e.g. Inconsolata and Courier) from Options."Set
>>>> Default Font" but did not find any font keeping the line spacing small.
>>> Have you checked with “C-u C-x =” that this actually affects the font
>>> used for this glyph?  For me, setting the default font does not have
>>> any effect on it.  I haven't yet figured out where Emacs finds the TeX
>>> Gyre font.
>> Thanks for the hint.  For me C-ux = yields :
>>             character: 𝜖 (displayed as 𝜖) (codepoint 120598, #o353426, 
>> #x1d716)
>>     preferred charset: unicode (Unicode (ISO10646))
>> code point in charset: 0x1D716
>>                script: mathematical
>>                syntax: w     which means: word
>>              category: .:Base, L:Left-to-right (strong)
>>              to input: type "C-x 8 RET 1d716" or "C-x 8 RET MATHEMATICAL 
>>           buffer code: #xF0 #x9D #x9C #x96
>>             file code: #xF0 #x9D #x9C #x96 (encoded by coding system 
>> utf-8-unix)
>>               display: by this font (glyph code)
>>     xft:-PfEd-Latin Modern 
>> Math-normal-normal-normal-*-15-*-*-*-*-0-iso10646-1 (#x112)
>> ...
> After an upgrade to Debian stretch, I now get this font instead:
>       xft:-unknown-DejaVu Math TeX 
> Gyre-normal-normal-normal-*-16-*-*-*-*-0-iso10646-1 (#x64A)
> And the problem is gone.  The extended height for the original font
> (TeX Gyre Termes Math) no longer shows up in LibreOffice Writer either
> (where it did before).  So there has been a bug fix, likely not in
> Emacs, but I don't know if it's the font metrics which have been
> fixed, or some shared part of font rendering.

Well, there were certainly issues with the font metrics of Latin Modern
Math, such that Firefox showed line height issues also:

(Cf. for


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