Changing Client Locale

[Recompense]

Hi there - been a while since I've written addon code requiring localization, but it looks like one of my recent addons has gained at least 1 international user! I cheated/used liberal shortcuts while coding and was using English string values, which broke the addon for this user.


Coding out the comparisons to English is simple, but while I'm at it I figured I should create the basics of localization for the addon.


Is there any way to change the client locale? My past research years ago suggested it was doable (although tricky) but I don't know what, if anything, is still possible with the Battle.net launcher and other changes to the game.