TLDR of the article: > In the Emacs world [...], when they make an API obsolete, they are basically saying: “You really shouldn’t use this approach, because ev

TLDR of the article: > In the Emacs world [...], when they make an API obsolete, they are basically saying: “You really shouldn’t use this approach, because even though it works, it suffers from various deficiencies which we enumerate here. But in the end it’s your call.” > Whereas in the Google world, deprecation means: “We are breaking our commitments to you.” [...] It means they are going to force you to do some work, possibly a large amount of rework, on a regular basis It's fine if they want to go hunting for their Perfect API v10™, but just leave the old APIs alone - build abstractions under them if needed. Don't push that work onto your customers.