tavisrudd/mu — comment on commit 1ff724069d5582de86518ae3f192fb822a04288a
File:  line 0
By djcb:

Hmm, '%S' makes the error message a bit cryptic ("nil not found"), but '%s' won't work if mu4e-mu-binary is nil.
Anyway, good point, I'll fix it in some different way.