[horizontal=a to b] not working

[T0ky0Cat]

Hi! I already have an issue with the very first diagram. I am just trying to copy paste

\feynmandiagram [horizontal=a to b]
{ i1 -- [fermion] a -- [fermion] i2, a -- [photon] b,
f1 -- [fermion] b -- [fermion] f2,
};

But instead of a-b being horizontal I always get i1-a-i2 horizontal. Substituting horizontal with vertical or with horizontal' gives the exact same diagram. I don't know what I could possibly be doing wrong at this point.

[Turgon-Aran-Gondolin]

Did you choose xelatex as your compiler?

[T0ky0Cat]

Yes, I did.

[Turgon-Aran-Gondolin]

I never figured out how to use it with xelatex, but lualatex works fine.

[T0ky0Cat]

I switched to lualatex and now it works fine for me as well. Thank you!

[liuyonghao156]

East Asian font type-setting actually relies on XeLaTeX, so using LuaLaTeX instead will not be an option for most of those works.

[JP-Ellis]

@liuyonghao156 Would some of the solutions described in some of the links below suit?

• How to use Chinese in LuaLaTeX
• Mixing Chinese Characters with English (Main Language) in 2019

[liuyonghao156]

@liuyonghao156 Would some of the solutions described in some of the links below suit?

• How to use Chinese in LuaLaTeX
• Mixing Chinese Characters with English (Main Language) in 2019

Thanks for your reply! Yes, for those who're interested in using CJK with this package, luatexja is indeed a CJK interface for LuaLaTeX, but to my specific case, many templates we use are written for XeLaTeX due to its prevalence. I notice that XeLaTeX has limited support for TikZ features which is extensively used in this package, so I will definitely ticket my school's template maintainer on supporting LuaLaTeX in the future!