help?> with deprecated keywords throws ERROR: Invalid @var syntax

[musm]

Looks like some deprecated keywords throw errors when searching with the REPL help

help?> abstract
ERROR: Invalid @var syntax `incomplete: premature end of input`.

help?> typealias
ERROR: Invalid @var syntax `incomplete: premature end of input`.

help?> type
ERROR: Invalid @var syntax `incomplete: premature end of input`.

help?> immutable
ERROR: Invalid @var syntax `incomplete: premature end of input`.

[musm]

No longer an issue on 1.0