The root sigil thing was for a little markup language I did. Among other things, makes parallel parsing trivial. 2 GB/s on my MacBook Air.
It's new to me! TeX had syntax to affect a block and syntax to affect just the following character.
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Yeah, but being TeX it was just an imperative macro kludge rather than a uniform syntactic device, IIRC.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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