In Shell mode, cannot reset input language to "Detect Automatically"

[Ao1Pointblank]

using the shell option with trans -shell -brief, i cannot revert back to detecting languages automatically once i select 1 input language manually.

example (translating a dutch word):

nl: aardappel
potato

✅ correct translation

then if i want to translate another word from an unknown language, i would have to restart the shell completely or else it would incorrectly keep trying to translate only from NL:

:en 土豆
土豆

❌ can't translate; is still trying to use dutch as input instead of detecting chinese

[soimort]

Thanks for reporting the issue.

I've added a workaround for this. Now it should be possible to use the following command to explicitly set the source language back to auto:

:set sl auto