Command line argument is being converted to bytes for some reason

[frabrooks]

I'm on Windows (sadly)

And the latest haskell-mode seems broken. The command-line argument --ghc-option=-ferror-spans when starting up a new 'cabal-repl' process is being converted to byte code for some reason.

Stepping through the debugger, it seems the error is introduced when haskell-process-compute-process-log-and-command in haskell-process.el returns:

( "cabal" "repl" 45 45 103 104 99 45 111 112 116 105 111 110 61 45 102 101 114 114 111 114 45 115 112 97 110 115)

This then leads to emacs to report:

Wrong type argument: stringp, 45

when attempting to load a file.

No idea why this is happening.

[bernhard-herzog]

In case this is still a problem:

The most likely reason is that in your Emacs haskell-process-args-cabal-repl is a string. It should be list of strings.