Issue 6141: document that the first item of args is still the
command name even when executable is specified.
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index 946a504..73c622e 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -39,9 +39,12 @@
Arguments are:
*args* should be a string, or a sequence of program arguments. The program
- to execute is normally the first item in the args sequence or the string if a
- string is given, but can be explicitly set by using the *executable*
- argument.
+ to execute is normally the first item in the args sequence or the string if
+ a string is given, but can be explicitly set by using the *executable*
+ argument. When *executable* is given, the first item in the args sequence
+ is still treated by most programs as the command name, which can then be
+ different from the actual executable name. On Unix, it becomes the display
+ name for the executing program in utilities such as :program:`ps`.
On Unix, with *shell=False* (default): In this case, the Popen class uses
:meth:`os.execvp` to execute the child program. *args* should normally be a