Fix ID'ing of version-specific executable names on Windows

Author: kurtmckee

changelog.d/20260219_071459_kurtmckee_more_hashbang_support.rst

@@ -0,0 +1,8 @@
+Fixed
+-----
+
+*   Strip the executable extension (like ``.exe``) before removing version numbers
+    when identifying a file type based on its hashbang.
+
+    This resolves a bug that prevented identification of version-specific
+    executable names, like ``python3.14.exe``, on Windows platforms.

src/chipshot/reader/identity.py

@@ -38,16 +38,16 @@ def handle(info: FileInfo, config: dict[str, typing.Any]) -> None:
             info.identity = config["interpreters"][name]
             return
 
-        # Look for a version-less name.
-        name_without_version = name.rstrip("0123456789.")
-        if name_without_version in config["interpreters"]:
-            log.debug(f"{info.path}: Found versioned interpreter '{name}'")
-            info.identity = config["interpreters"][name_without_version]
-            return
-
-        # Try removing the extension (such as "python.exe" on Windows).
+        # Try removing the extension (such as ".exe" on Windows).
         stem = path.stem
         if stem in config["interpreters"]:
             log.debug(f"{info.path}: Found base interpreter '{name}'")
             info.identity = config["interpreters"][stem]
             return
+
+        # Look for a version-less name.
+        name_without_version = stem.rstrip("0123456789.")
+        if name_without_version in config["interpreters"]:
+            log.debug(f"{info.path}: Found versioned interpreter '{name}'")
+            info.identity = config["interpreters"][name_without_version]
+            return

tests/test_reader_identity.py

@@ -19,7 +19,9 @@
         pytest.param("#!/usr/bin/python", "python", id="base executable name"),
         pytest.param("#!/usr/bin/python3.11", "python", id="trailing version"),
         pytest.param("#!/usr/bin/env python", "python", id="env"),
-        pytest.param(r"#!C:\Program Files\Python39\python.exe", "python", id="windows"),
+        pytest.param(
+            r'#!"C:\Program Files\Python39\python3.9.exe"', "python", id="windows"
+        ),
         pytest.param(
             "#!/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe -File",
             "powershell",