Omit extra space in kwarg unpacking if it's an argument

Fixes #46

diff --git a/README.md b/README.md
index aba30ab2fb0483483e75bb32f28d7bd6185ae2ca..91c9384696c07b097dff54e55e1823376d32771e 100644 (file)
--- a/README.md
+++ b/README.md
@@ -298,6 +298,9 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 * don't omit whitespace if the previous factor leaf wasn't a math
   operator (#55)
 
+* omit extra space in kwarg unpacking if it's the first argument (#46)
+
+
 ### 18.3a3
 
 * don't remove single empty lines outside of bracketed expressions

diff --git a/black.py b/black.py
index 0dd763073622d2ec1d0234b46cf5cd4e42bfe607..d3e0761e273a58fe4b7318827e12bbd853f53eea 100644 (file)
--- a/black.py
+++ b/black.py
@@ -867,21 +867,22 @@ def whitespace(leaf: Leaf) -> str:  # noqa C901
 
         if prevp.type == token.EQUAL:
             if prevp.parent and prevp.parent.type in {
-                syms.typedargslist,
-                syms.varargslist,
-                syms.parameters,
                 syms.arglist,
                 syms.argument,
+                syms.parameters,
+                syms.typedargslist,
+                syms.varargslist,
             }:
                 return NO
 
         elif prevp.type == token.DOUBLESTAR:
             if prevp.parent and prevp.parent.type in {
-                syms.typedargslist,
-                syms.varargslist,
-                syms.parameters,
                 syms.arglist,
+                syms.argument,
                 syms.dictsetmaker,
+                syms.parameters,
+                syms.typedargslist,
+                syms.varargslist,
             }:
                 return NO
 

diff --git a/tests/expression.py b/tests/expression.py
index c18942ec3522f058dfd7f173d669bfb07385e932..91e5465440799856479837e4f73e56ec2fe7e83e 100644 (file)
--- a/tests/expression.py
+++ b/tests/expression.py
@@ -75,6 +75,7 @@ call(arg, kwarg='hey')
 call(arg, another, kwarg='hey', **kwargs)
 call(this_is_a_very_long_variable_which_will_force_a_delimiter_split, arg, another, kwarg='hey', **kwargs)  # note: no trailing comma pre-3.6
 call(*gidgets[:2])
+call(**self.screen_kwargs)
 lukasz.langa.pl
 call.me(maybe)
 1 .real
@@ -237,6 +238,7 @@ call(
     **kwargs
 )  # note: no trailing comma pre-3.6
 call(*gidgets[:2])
+call(**self.screen_kwargs)
 lukasz.langa.pl
 call.me(maybe)
 1 .real