Fix Linux locale matching and add pt aliases

[Augusto Pinto (alghostzx)]

The binary was compiling with portuguese brazilian locale by default, but wasn't acessible in any way thanks to this little typo I found, I fixed it, hope it's okay. ;)

Summary written by AI

This PR addresses two issues with locale resolution on Linux environments:

1. Linux locale separator normalization:
   In crates/edit/src/sys/unix.rs, preferred_languages previously replaced underscores (_) with hyphens (-). However, the internal build generator sanitizes and matches against identifier patterns using underscores (pt_br), causing common POSIX locales like pt_BR.UTF-8 to be transformed into pt-BR.UTF-8 and subsequently fail the prefix match against LANGUAGES. Swapping the replacement direction restores expected matching.

2. Portuguese aliases in edit.toml:
   Added pt and pt_br aliases pointing to pt-br in [__alias__], ensuring users with generic LANG=pt fall back gracefully to the bundled Portuguese translation.

[Augusto Pinto (alghostzx)]

@microsoft-github-policy-service agree

[Augusto Pinto (alghostzx)]

@microsoft-github-policy-service agree

[Dustin L. Howett (DHowett)]

I feel like this reverts an intentional change we made to address this exact case.

Edit expects the format of the LANG environment variable to follow the rule laid out in IEEE 1003.1 (so, POSIX):

If the locale value has the form:

language[_territory][.codeset]

it refers to an implementation-provided locale, where settings of language, territory, and codeset are implementation-defined.

That is, it comes to us with an underscore. We transform it to contain a -. We should not accept an invalid LANG and then transform it to something that edit internally knows not what to do with.

[Augusto Pinto (alghostzx)]

Thanks for the clarification, Dustin L. Howett (@DHowett)! That makes total sense regarding IEEE 1003.1 / POSIX and normalizing to the BCP 47 convention (pt-BR -> pt-br) used by the translation tables.

I will revert the change in crates/edit/src/sys/unix.rs to keep the original _ -> - transformation intact, and keep only the aliases in i18n/edit.toml so that general pt locales fall back cleanly to pt-br.

I will update the branch shortly!

[Augusto Pinto (alghostzx)]

I reverted the change in crates/edit/src/sys/unix.rs so the original _ -> - transformation remains intact, and kept the aliases in i18n/edit.toml so that general pt locales fall back cleanly to pt-br.

Just pushed the update!

[Leonard Hecker (lhecker)]

So, what is the actual LANG value for which this app failed for you?

[Augusto Pinto (alghostzx)]

So, uh, funny story...
I can't reproduce my own error anymore...
Apparently I'm trying to fix a bug that was already fixed... It's present in the stable released version, but apparently in the git nightly in case I compile MASTER today, it's not there anymore. So, uh, sorry for your wasted time and thanks for being so patient. 😅