(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)|(.+)

    (.{4})(.{7})(.{3})(.{6})(.{9})(.{4})(.{7})(.{3})(.{6})(.{9})(.{4})(.{7})(.{3})(.{6})(.{9})(.{4})(.{7})(.{3})(.{6})(.{9})(.{1})

And I wouldn't necessarily blame the developer in either scenario - they received a card that says "hey the channel file will now have an extra field in it's schema"... noone said "btw it's optional".

Calling it a "first year programming mistake" like I'm reading in some media is somewhat incendiary. I see unmarshalling errors happen all the time.

The forest that we must not miss is the kernel-level driver simply dies with no error recovery and bricks the system.

The bug in clients (sensors) wasn't due to regex, the regex was in their integration unit testing which also had a bug and was never supplying the 21st parameter to the client code.