Commit cac8be61 authored by Committed by Ben Gamari
Better error message for empty character literal, for Trac #13450.
For empty character literal, the `''`, report error message properly rather than just throw a "parser error" with wrong error location. Test Plan: make test TEST="T13450 T13450TH" Reviewers: goldfire, bgamari Reviewed By: bgamari Subscribers: thomie, mpickering, carter GHC Trac Issues: #13450 Differential Revision: https://phabricator.haskell.org/D4594
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