Coconut REPL crashes when importing some functions with mixed typed and untyped arguments.

[tom-a-horrocks]

Steps to reproduce:

1. Create file my_file.coco containing def fun0(a: str, b) = 'foo'.
2. Open latest coconut REPL (v1.6.0) and enter import my_file.
3. Note the REPL crashes with error CoconutSyntaxError: non-default arguments must come first or after star argument/separator.

This is a REPL issue only: coconut my_file.coco compiles and runs without issue. I can't figure out the exact pattern of typed and untyped arguments that cause the crash, but here's all combinations of 2 and 3-arugment functions:

REPL imports without issue
def fun00(a, b) = 'foo'
def fun02(a, b: str) = 'foo'
def fun03(a: str, b: str) = 'foo'
def fun04(a, b, c) = 'foo'
def fun07(a, b, c: str) = 'foo'
def fun10(a, b: str, c: str) = 'foo'
def fun11(a: str, b: str, c: str) = 'foo'

REPL crashes on import
def fun01(a: str, b) = 'foo'
def fun05(a: str, b, c) = 'foo'
def fun06(a, b: str, c) = 'foo'
def fun08(a: str, b: str, c) = 'foo'
def fun09(a: str, b, c: str) = 'foo'

[evhub]

Strange. Can you show me the output of coconut --version?

Also, if you switch to develop (pip install -U coconut-develop), does it resolve the issue?

[tom-a-horrocks]

coconut --version:

Coconut: Version 1.6.0 [Vocational Guidance Counsellor] running on Python 3.9.7 and Cython cPyparsing v2.4.7.1.1.0

Switching to coconut-develop fixes it.