Add -3 option to the interpreter to warn about features that are
deprecated and will be changed/removed in Python 3.0.
This patch is mostly from Anthony. I tweaked some format and added
a little doc.
diff --git a/Modules/main.c b/Modules/main.c
index 2dbdfe9..7777db1 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -40,7 +40,7 @@
static int orig_argc;
/* command line options */
-#define BASE_OPTS "c:dEhim:OQ:StuUvVW:xX?"
+#define BASE_OPTS "3c:dEhim:OQ:StuUvVW:xX?"
#ifndef RISCOS
#define PROGRAM_OPTS BASE_OPTS
@@ -82,6 +82,7 @@
-V : print the Python version number and exit (also --version)\n\
-W arg : warning control; arg is action:message:category:module:lineno\n\
-x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\
+-3 : warn about Python 3.x incompatibilities\n\
file : program read from script file\n\
- : program read from stdin (default; interactive mode if a tty)\n\
";
@@ -267,6 +268,10 @@
Py_DebugFlag++;
break;
+ case '3':
+ Py_Py3kWarningFlag++;
+ break;
+
case 'Q':
if (strcmp(_PyOS_optarg, "old") == 0) {
Py_DivisionWarningFlag = 0;