error messages mangle unicode characters
ghc/ghci understand source code written in UTF-8. However, an error message that contains such characters will turn them into gibberish. This is especially annoying in ghci:
*> ä
<interactive>:1:0: Not in scope: `�'
*> Ȫ
<interactive>:1:0: Not in scope: data constructor `*'Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.8.2 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture | Unknown |