bpo-35755: Don't say "to mimick Unix which command behavior" (GH-12861)

Lib/distutils/spawn.py

@@ -188,7 +188,7 @@ def find_executable(executable, path=None):
                 # os.confstr() or CS_PATH is not available
                 path = os.defpath
         # bpo-35755: Don't use os.defpath if the PATH environment variable is
-        # set to an empty string to mimick Unix which command behavior
+        # set to an empty string
 
     # PATH='' doesn't match, whereas PATH=':' looks in the current directory
     if not path:

Lib/shutil.py

@@ -1317,7 +1317,7 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
                 # os.confstr() or CS_PATH is not available
                 path = os.defpath
         # bpo-35755: Don't use os.defpath if the PATH environment variable is
-        # set to an empty string to mimick Unix which command behavior
+        # set to an empty string
 
     # PATH='' doesn't match, whereas PATH=':' looks in the current directory
     if not path:

Misc/NEWS.d/next/Library/2019-04-16-17-50-39.bpo-35755.Fg4EXb.rst

@@ -2,5 +2,4 @@
 ``os.confstr("CS_PATH")`` if available instead of :data:`os.defpath`, if the
 ``PATH`` environment variable is not set. Moreover, don't use
 ``os.confstr("CS_PATH")`` nor :data:`os.defpath` if the ``PATH`` environment
-variable is set to an empty string to mimick Unix ``which`` command
-behavior.
+variable is set to an empty string.