rustup-init.sh: unknown macOS major version

[harry-xm]

In check_help_for(), there is a branch for macOS that treats all versions newer than Big Sur as "unknown macOS major version."

Normally this branch is not executed, but before commit a9c4362 there was a brief period where it could be reached when curl is too new.

Is the check still necessary?

rustup/rustup-init.sh

Lines 732 to 739 in dc9d072

	11.*)
	# We assume Big Sur will be OK for now
	;;
	*)
	# Unknown product version, warn and continue
	warn "Detected unknown macOS major version: $(sw_vers -productVersion)"
	warn "TLS capabilities detection may fail"
	;;

By the way, : is missing on the last line of warn, which is inconsistent and might worth fixing.

[rami3l]

@harry-xm Thanks for reporting this! Indeed this part of the script has been out of date since quite a while ago.

I think it shouldn't be too hard to change 11.* to something like "anything >= 11", maybe by issuing sw_vers -productVersion | cut -d. -f1 in the *) branch?

PS: I can find some time to fix this, and in the meantime please feel free to send a PR over if you like :)