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Glitch in math fonts caused by `TU` font encoding in new 2ekernel (XeTeX/LuaTeX) #375
The glue between `f' and left parenthesis is incorrect.
I've checked the
This patch after
Test for sans-serif math font is ongoing. Perhaps we should report bug to 2ekernel team?
This just came up in a german group too. xetex has a problem with the italic correction when opentype text fonts are used in math (https://tex.stackexchange.com/questions/132835/fontspec-mathspec-ruins-my-parentheses-with-beamer).
As beamer uses
While this works fine with the default fonts, it will break as soon as other (open type) text fonts are used with fontspec for which T1+\mathfamilydefault will not exist. I don't see a good solution beside asking the users to give
Current math font scheme change all letters from OML encoding to text-based encoding (OT1, T1, TU, etc). The metrics differ a lot between fonts related to these two groups of encodings. This is improper in typesetting formulas.
I'm planning to test the following strategy: