Gerben Wierda via ntg-context schrieb am 09.07.2022 um 13:58:
> I’d like to experiment a bit with typesetting Japanese in ConTeXt 
> (LMTX), to see if it is doable.
>
> I tried looking for Japanese on ConTeXtgarden, but did not find anything.
>
> Can someone point me to instructions to get started with Japanese in 
> LMTX (on macOS).

1. You need a font to typeset japanese.

2. Add \setscript[nihongo] to your document to enable line breaks.

%%%% begin example
\definefontfamily [noto-cjk-jp] [serif] [Noto Serif CJK JP]
   [it={style:regular,features:{*,slanted}},
    bi={style:bold,features:{*,slanted}}]

\definefontfamily [noto-cjk-jp] [sans]  [Noto Sans CJK JP]
   [it={style:regular,features:{*,slanted}},
    bi={style:bold,features:{*,slanted}}]

\definefontfamily [noto-cjk-jp] [mono]  [Noto Sans Mono CJK JP]
   [it={style:regular,features:{*,slanted}},
    bi={style:bold,features:{*,slanted}}]

\definetypeface [noto-cjk-jp] [mm] [math] [pagella] [default]

\setupbodyfont [noto-cjk-jp]

\setscript [nihongo]

\starttext

\rm\tf 日本語 \it 日本語 \bf 日本語 \bi 日本語

\ss\tf 日本語 \it 日本語 \bf 日本語 \bi 日本語

\tt\tf 日本語 \it 日本語 \bf 日本語 \bi 日本語

\stoptext
%%%% end example

Wolfgang