On Mon, Feb 6, 2012 at 18:49, Mark S. Miller <erights at google.com> wrote: > QuasiChar :: > SourceCharacter but not one of $ or ` > $ $ > $ ` > $ \ EscapeSequence This part was never in the Quasi proposal. `abc$$def` is the same as `abc\${def}` according to the current proposal. -- erik