GHCi reports successfully loading ghci.conf even if reading fails
Summary
When the encoding isn't set up properly to match the encoding of the ghci.conf file, loading the commands from the file fails, but GHCi still claims to have loaded it.
Steps to reproduce
Example ghci.conf (Note the λ which causes the problem):
putStrLn "XXX Start"
:set prompt "λ "
:set prompt-cont "| "
putStrLn "XXX End"in shell:
$ LANG=en_US.UTF8 ghci
GHCi, version 9.2.1: https://www.haskell.org/ghc/ :? for help
XXX Start
XXX End
Loaded GHCi configuration from /home/user/.ghc/ghci.conf
λ $ LANG=0 ghci
GHCi, version 9.2.1: https://www.haskell.org/ghc/ :? for help
XXX Start
Loaded GHCi configuration from /home/user/.ghc/ghci.conf
ghci> As you can see, it fails before putStrLn XXX End` is reached, and the prompt is incorrect.
Expected behavior
Report some kind of error instead of success (ideally that the encoding is wrong, at least that reading the file failed)
Environment
- GHC version used: 9.2.1
Optional:
- Operating System: Arch
- System Architecture: x86_64