[bsc] Generated .rei files changed function name

[wyze]

This was working correctly in bs-platform 4.0.5, but started running into this when I upgraded to 4.0.6.

Source

type ex;
[@bs.val] external expect: Dom.element => ex = "";
[@bs.get] external not_: ex => ex = "not";

Command

$ bsc -bs-re-out lib/bs/src/File.cmi > src/File.rei

Output

type ex;
[@bs.val] external expect: Dom.element => ex = "";
[@bs.get] external not__: ex => ex = "not";

Error

[2/3] Building src/JestDom.cmj

 We've found a bug for you!
 /Users/neil/Projects/personal/bs-jest-dom/src/JestDom.re

 The implementation src/JestDom.mlast
 does not match the interface src/jestDom.cmi:
 The value `not__' is required but not provided

error Command failed with exit code 2.

Expected

type ex;
[@bs.val] external expect: Dom.element => ex = "";
[@bs.get] external not_: ex => ex = "not";

[bobzhang]

@chenglou this seems to be a regression in reason oprinter?

[bobzhang]

moved to reason repo