[XeTeX] why does Latin Modern Mono have some stretch and shrink with XeTeX ?

[Ulrike Fischer]

Am Wed, 25 Jan 2017 10:07:34 +0000 schrieb Philip Taylor:

>  Whether the fault lies in the XeTeX engine or in the font is moot,

Well imho it is a difference if a font set this values and xetex
simply reads them in or if the font doesn't set this values and
xetex guesses (faulty) defaults. 

Actually I found an old discussion which seems to imply that xetex
calculates the fontdimens starting from the width a space -- and
doesn't care about monospace or not:

https://tug.org/pipermail/xetex/2006-June/004236.html


-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/