Teach GHCi to deduplicate history
GHCi's (or rather, Haskeline's) history functionality tends to duplicate entries, even when the user used history to enter an entry. This is quite annoying and an issue I've not noticed in other command line libraries.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.0.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |