Change language priority for environment variables

[columbarius]

Regarding the language priority discussed in #122 and tldr-pages/tldr#4101 I have implemented a solution. My suggestion would be a priority like that

TLDR_LANGUAGE	LANG	LANGUAGES	Result
fr	de	it,fr,de	fr
!	de	it,fr,de	de,it,fr,en
!	!	it,fr,de	it,fr,de,en
!	de	!	de,en

, while ! is unset.

I'm also interested, where LANGUAGES originates from. While I couldn't find a notion of it in the archwiki, or at gnu.org, I found the LANGUAGE environment variable instead.

Since this topic is still in discussion I'm submitting this as a draft in case it could be useful.

[zlatanvasovic]

Does it agree with the specification, though? I think it should be fr, en in the first row. Either way, I think it'd be useful if you posted your ideas in tldr-pages/tldr#4101.

[MasterOdin]

I'm also interested, where LANGUAGES originates from. While I couldn't find a notion of it in the archwiki, or at gnu.org, I found the LANGUAGE environment variable instead.

Because I'm bad at typing and it should be LANGUAGE. Opening a PR now for that.

[columbarius]

Does it agree with the specification, though? I think it should be fr, en in the first row.

I read TLDR_LANGUAGE in the same role of the --language flag to replace all other languages.

Either way, I think it'd be useful if you posted your ideas in tldr-pages/tldr#4101.

All right, then I will do that.

Because I'm bad at typing and it should be LANGUAGE. Opening a PR now for that.

Ok, thanks.

[columbarius]

I've updated the language handling to fit my proposal in tldr-pages/tldr#4092 (comment) to test it for convenience.

[columbarius]

Since tldr-pages/tldr#4101 was merged I changed this from Draft to PR.

[columbarius]

Should I bump client_specification to 1.3 in this PR, or would this be done in an extra commit?

[zlatanvasovic]

@columbarius go ahead, nice catch!

[columbarius]

client_specification bumped. I guess, I should have written this earlier to trigger a notification?

[zlatanvasovic]

No need, I am just leaving the final merge decision to @MasterOdin.

[MasterOdin]

Thanks for this. Still some refactoring I'd like to do in the next week or so before cutting a new release.

[columbarius]

Ok, thanks for merging.