UTF8 in type parameters is broken

[maksbotan]

Take this code:

data Foo = Foo { foo :: Foo "кек" }

There are non-ASCII UTF8 symbols in the type parameter (and it's perfectly OK).

stylish-haskell does this:

data Foo
  = Foo
      { foo :: Foo "\1082\1077\1082"
      }

This is unacceptable of course :)

[jhmcstanton]

I started looking into this issue, but I am having a hard time recreating it. What are your locale settings?

[maksbotan]

$ locale 
LANG="ru_RU.UTF-8"
LC_COLLATE="ru_RU.UTF-8"
LC_CTYPE="ru_RU.UTF-8"
LC_MESSAGES="ru_RU.UTF-8"
LC_MONETARY="ru_RU.UTF-8"
LC_NUMERIC="ru_RU.UTF-8"
LC_TIME="ru_RU.UTF-8"
LC_ALL=

I'm on macOS 10.14 if that matters.

[jhmcstanton]

Can you provide your configuration as well?

[maksbotan]

@jhmcstanton just uncomment records: part in the default config without changing anything else, it's enough to trigger this.

[jhmcstanton]

@jaspervdj any idea where to look to resolve this issue? So far I have added tests that show the incorrect behavior and checked

• putType in Printer
• printing of string literals in Imports
• a smattering of other places

but I have not had luck finding where this issue might be.