Fix indentation unicode symbols. #714
Merged
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The GHC lexer actually uses the symbols ⤙ and ⤚ for arrow notation, and
these are the glyphs which the listed code-points and Unicode names in
the file refer to. However, the table from the GHC documentation, from
which the symbols in haskell-indentation.el seem to have been copied,
currently lists the wrong glyphs for these codepoints.
Cf. lexer source. I’ve already filed a bug against the GHC docs.