`(= @"update" @"update")` is `false`.

[amano-kenji]

This was a nasty surprise.

[pepe]

You should read at least the basic documentation then :-).

[sogaiu]

For potential future readers, I believe one place that covers this is the Deep Equality Operator section of the Comparison Operators page:

The primitive = operator does not compare the contents of mutable structures (arrays, tables, and buffers). Instead, it checks if the two values are the same object.

[amano-kenji]

:cat2: