On Tue, Dec 5, 2017 at 4:49 PM, Evan Laforge <qdunkan@gmail.com> wrote:
I believe \STX is a signal to haskeline for control sequences.
Documentation is here:
https://github.com/judah/haskeline/wiki/ControlSequencesInPrompt

Huh, so they did add support for that. With a version constraint, so this will depend also on haskeline version (and therefore ghc version, and what works in newer ghci will therefore not work in older ones).

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