Added clarifying comment

diff --git a/Lib/commands.py b/Lib/commands.py
index 428a830764f3e68f89f1cd83620de1fb6d59d1e7..6471a8db594c29e1df79dbce42b3b26355be54d9 100644 (file)
--- a/Lib/commands.py
+++ b/Lib/commands.py
@@ -40,6 +40,8 @@ def mk2arg(head, x):
 
 
 # Make a shell command argument from a string.
+# Return a string beginning with a space followed by a shell-quoted
+# version of the argument.
 # Two strategies: enclose in single quotes if it contains none;
 # otherwise, enclose in double quotes and prefix quotable characters
 # with backslash.