What's the point of specifyingtranslator: prism?

[shenlebantongying]

I thought the purpose of translator: prism: is to specify which .prism.bin will be generated and used.

However, if I don't specify it, the file will be generated anyway. It seems to have no obvious effect at all.

Experiment: Squirrel 0.15.2, clean build, single schema, no translator: prism: specified, and the files will still be generated.

Related: shenlebantongying/rime_latex#15

Context: He tries to use the rime_latex within luna_pinyin, and specifying translator: prism: in rime_latex will cause it to stop working. (maybe it's a bug?)