format-patch: why are the Range-diff: and Interdiff: headers translated?

git-format-patch(1) has had translated strings for `Range-diff:` and `Interdiff:` since they were introduced.[1][2][3]

    // Example
    _("Interdiff against v%d: ...

Is that how translated/l10n Git is supposed to to work? I get translating errors and such—that’s for the user. But a Colombian user might send out patches to an international email list. Why should their own translated UI (again, if I’m understanding l10n correctly) affect the patch output?

I found no comments on these changes.

🔗 1: https://lore.kernel.org/git/20180722095717.17912-1-sunshine@sunshineco.com/#t † 2: 688cb1c9 (Merge branch 'es/format-patch-interdiff', 2018-09-17) † 3: 881c019e (Merge branch 'es/format-patch-rangediff', 2018-09-17)