Leave non breaking space in 'type: ignore' to be safe

See rational:psf#2092
Pierre-Sassoulas · Apr 11, 2021 · 3b7b0b7 · 3b7b0b7
1 parent 145d46e
commit 3b7b0b7
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/src/black/__init__.py b/src/black/__init__.py
@@ -2709,8 +2709,9 @@ def make_comment(content: str) -> str:
 
     if content[0] == "#":
         content = content[1:]
-    if content and content[0] == " ":  # This is a non-breaking space
-        content = " " + content[1:]  # And this is a simple space
+    NON_BREAKING_SPACE = " "
+    if content and content[0] == NON_BREAKING_SPACE and "type: ignore" not in content:
+        content[0] = " "  # Replace NBSP by a simple space
     if content and content[0] not in " !:#'%":
         content = " " + content
     return "#" + content

diff --git a/tests/data/comments7.py b/tests/data/comments7.py
@@ -183,7 +183,7 @@ def func():
         0.0789,
         0.0123,
         0.0789,
-        a[-1],  # type: ignore
+        a[-1],  # type: ignore
     )
     c = call(0.0123, 0.0456, 0.0789, 0.0123, 0.0789, a[-1])  # type: ignore
     c = call(