Re: "Can't find Hunspell dictionary" error (was Re: Emacs pretest 28.0.91 is out)

[Phil Sainty <psainty@orcon.net.nz>]

On 2022-01-14 20:12, Eli Zaretskii wrote:
> IOW, when you say "I wouldn't expect an absence of dictionaries to
> cause those functions to fail", what do you expect from spell-checking
> commands to do instead, when there are no dictionaries available to
> them, except fail?

`ispell-⁠valid-⁠dictionary-⁠list' isn't a spell-checking function per 
se,
though -- it's a helper function for establishing which dictionaries
are available for use *by* a spell-checking command.

If a command to actually check some spelling was invoked and there
were no dictionaries, then it would be fair to signal an error, but
this error is happening when merely asking for a list of dictionaries,
and an empty list is a valid list.

If there are no valid dictionaries, `ispell-⁠valid-⁠dictionary-⁠list'
should simply return an empty list.

IIUC this is only happening if hunspell is the spell checker, so
I think this should be considered a bug in the code for handling
hunspell.