When an expression is in star-args, a space gets added

[dhermes]

For example, the expression gidgets[:2] is treated differently than gidgets when passed as star args.

For the file star_arg.py:

def f(*widgets):
    result = 0
    for widget in widgets:
        result += widget
    return result


def g(a, b, c, d):
    gidgets = (a, b, c)
    if d > 4:
        return f(*gidgets[:2])

    else:
        return f(*gidgets)

Running black (installed from HEAD as in #30) adds the space between the * and the star arg:

$ venv-HEAD/bin/black star_arg.py
reformatted star_arg.py

See the diff

diff --git a/star_arg.py b/star_arg.py
index e98997c..12ce82d 100644
--- a/star_arg.py
+++ b/star_arg.py
@@ -8,7 +8,7 @@ def f(*widgets):
 def g(a, b, c, d):
     gidgets = (a, b, c)
     if d > 4:
-        return f(*gidgets[:2])
+        return f(* gidgets[:2])

     else:
         return f(*gidgets)

[ambv]

Fixed!