Fix spurious space after unary expression

This happened when the operand was a complex expression.

Fixes #15

README.md

@@ -257,6 +257,12 @@ You can still try but prepare to be disappointed.
 
 * fixed spurious space in parenthesized set expressions (#7)
 
+* fixed spurious space after opening parentheses and in default
+  arguments (#14, #17)
+
+* fixed spurious space after unary operators when the operand was
+  a complex expression (#15)
+
 
 ### 18.3a0
 

black.py

@@ -815,6 +815,9 @@ def whitespace(leaf: Leaf) -> str:
             if prevp.parent and prevp.parent.type == syms.subscript:
                 return NO
 
+        elif prevp.parent and prevp.parent.type == syms.factor:
+            return NO
+
     elif prev.type in OPENING_BRACKETS:
         return NO
 

tests/expression.py

@@ -31,6 +31,7 @@
 -1
 ~int and not v1 ^ 123 + v2 | True
 (~int) and (not ((v1 ^ (123 + v2)) | True))
+flags & ~ select.EPOLLIN and waiters.write_task is not None
 lambda arg: None
 lambda a=True: a
 lambda a, b, c=True: a
@@ -155,6 +156,7 @@ async def f():
 -1
 ~int and not v1 ^ 123 + v2 | True
 (~int) and (not ((v1 ^ (123 + v2)) | True))
+flags & ~select.EPOLLIN and waiters.write_task is not None
 lambda arg: None
 lambda a=True: a
 lambda a, b, c=True: a