As a side effect of calling PySys_SetArgv (setpythonargv), the
directory containing argv[0] is inserted in front of sys.path.
If argv[0] contains no directory, an empty string is inserted.
If argv is empty, nothing happens.
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 8937c85..1b6fab8 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -364,5 +364,23 @@
fatal("no mem for sys.argv");
if (sysset("argv", av) != 0)
fatal("can't assign sys.argv");
+ if (argc > 0) {
+ object *path = sysget("path");
+ if (path != NULL) {
+ char *p = strrchr(argv[0], SEP);
+ int n;
+ object *a;
+ if (p == NULL)
+ n = 0;
+ else
+ n = p + 1 - argv[0];
+ a = newsizedstringobject(argv[0], n);
+ if (a == NULL)
+ fatal("no mem for sys.path insertion");
+ if (inslistitem(path, 0, a) < 0)
+ fatal("sys.path.insert(0) failed");
+ DECREF(a);
+ }
+ }
DECREF(av);
}