Issue 8202: when using the -m command line switch, sys.argv[0] is now '-m' instead of '-c' while searching for the module to be executed
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index a444228..0199f9f 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -95,8 +95,9 @@
file is not available.
If this option is given, the first element of :data:`sys.argv` will be the
- full path to the module file. As with the :option:`-c` option, the current
- directory will be added to the start of :data:`sys.path`.
+ full path to the module file (while the module file is being located, the
+ first element will be set to ``"-m"``). As with the :option:`-c` option,
+ the current directory will be added to the start of :data:`sys.path`.
Many standard library modules contain code that is invoked on their execution
as a script. An example is the :mod:`timeit` module::
diff --git a/Misc/NEWS b/Misc/NEWS
index 9fe0fca..e387017 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
Core and Builtins
-----------------
+- Issue #8202: sys.argv[0] is now set to '-m' instead of '-c' when
+ searching for the module file to be executed with the -m command
+ line option
+
- Issue #7319: When -Q is used, do not silence DeprecationWarning.
- Issue #7332: Remove the 16KB stack-based buffer in
diff --git a/Modules/main.c b/Modules/main.c
index 11ac97e..2f5dc57 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -519,10 +519,10 @@
}
if (module != NULL) {
- /* Backup _PyOS_optind and force sys.argv[0] = '-c'
+ /* Backup _PyOS_optind and force sys.argv[0] = '-m'
so that PySys_SetArgv correctly sets sys.path[0] to ''*/
_PyOS_optind--;
- argv[_PyOS_optind] = "-c";
+ argv[_PyOS_optind] = "-m";
}
PySys_SetArgv(argc-_PyOS_optind, argv+_PyOS_optind);