Settings HEROKU_APP_NAME is protected

[et]

% heroku config:set HEROKU_APP_NAME=$(heroku apps:info|grep ===|cut -d' ' -f2)

Setting HEROKU_APP_NAME and restarting ⬢ REDACTED... done, v265
 ▸    Warning: The "HEROKU_" namespace is protected and shouldn't be used.
HEROKU_APP_NAME: REDACTED

Is it possible to use a different config var for this?

[miketheman]

That's interesting - when did that become a protected namespace?

Really, all this app needs is for someone to set a variable and for the buildpack plugin here to utilize it.

[et]

I have no clue when it became protected. It's totally fine to use the namespace variable but it may be wise to change the default config variable to avoid confusing people.