Everything has stability markers. Currently, user defined macros and syntax extensions are not marked as stable. Syntax extensions will absolutely _not_ be stable at 1.0, macro stuff is a bit less clear, expect to hear about this soon.
That post is about syntax extensions, so yes, you'll have to be using the nightly build if you want to keep using them. They'll be considered high priority to stabilize, but given that they rely on compiler internals... I actually argued against writing that guide because of this, but eventually said okay.
That post is about syntax extensions, so yes, you'll have to be using the nightly build if you want to keep using them. They'll be considered high priority to stabilize, but given that they rely on compiler internals... I actually argued against writing that guide because of this, but eventually said okay.