Fix improper unmodified file caching when `-S` was used

This will also future-proof the cache to changes to FileMode.

diff --git a/README.md b/README.md
index bdc000a6f6e6ea43136822a4992d812e0d65b2af..00179a93198d4d1dfebff5bd5fac8f3c5c2a52a0 100644 (file)
--- a/README.md
+++ b/README.md
@@ -712,6 +712,11 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 
 ## Change Log
 
+### 18.6b2
+
+* fixed improper unmodified file caching when `-S` was used
+
+
 ### 18.6b1
 
 * hotfix: don't output human-facing information on stdout (#299)

diff --git a/black.py b/black.py
index e72db2b1e0650b95a68c3659fd351e461b677578..80401f5e5c5e4d2d6cc297351b7564350615b0ed 100644 (file)
--- a/black.py
+++ b/black.py
@@ -3335,12 +3335,7 @@ def can_omit_invisible_parens(line: Line, line_length: int) -> bool:
 
 
 def get_cache_file(line_length: int, mode: FileMode) -> Path:
-    pyi = bool(mode & FileMode.PYI)
-    py36 = bool(mode & FileMode.PYTHON36)
-    return (
-        CACHE_DIR
-        / f"cache.{line_length}{'.pyi' if pyi else ''}{'.py36' if py36 else ''}.pickle"
-    )
+    return CACHE_DIR / f"cache.{line_length}.{mode.value}.pickle"
 
 
 def read_cache(line_length: int, mode: FileMode) -> Cache: