Use debug f-strings for feature detection (#3215)

[etc/vim.git] / src / black / output.py

diff --git a/src/black/output.py b/src/black/output.py
index c85b253c159c885c2fd2e04f9691fdec279fa736..f4c17f28ea418d363f9b388e3770c208ca26b1b1 100644 (file)
--- a/src/black/output.py
+++ b/src/black/output.py
@@ -4,11 +4,11 @@ The double calls are for patching purposes in tests.
 """
 
 import json
-from typing import Any, Optional
-from mypy_extensions import mypyc_attr
 import tempfile
+from typing import Any, Optional
 
 from click import echo, style
+from mypy_extensions import mypyc_attr
 
 
 @mypyc_attr(patchable=True)
@@ -59,8 +59,8 @@ def diff(a: str, b: str, a_name: str, b_name: str) -> str:
     """Return a unified diff string between strings `a` and `b`."""
     import difflib
 
-    a_lines = [line for line in a.splitlines(keepends=True)]
-    b_lines = [line for line in b.splitlines(keepends=True)]
+    a_lines = a.splitlines(keepends=True)
+    b_lines = b.splitlines(keepends=True)
     diff_lines = []
     for line in difflib.unified_diff(
         a_lines, b_lines, fromfile=a_name, tofile=b_name, n=5
@@ -81,7 +81,7 @@ def color_diff(contents: str) -> str:
     lines = contents.split("\n")
     for i, line in enumerate(lines):
         if line.startswith("+++") or line.startswith("---"):
-            line = "\033[1;37m" + line + "\033[0m"  # bold white, reset
+            line = "\033[1m" + line + "\033[0m"  # bold, reset
         elif line.startswith("@@"):
             line = "\033[36m" + line + "\033[0m"  # cyan, reset
         elif line.startswith("+"):