* pythonmain.c: -k option, usage message, more environment flags.

  (the latter also in frozenmain.c)
* ceval.c: global 'killprint' flag raises exception when printing an
  expression statement's value (useful for finding stray output)
* timemodule.c: add asctime() and ctime().  Change julian date to
  1-based origin (as intended and documented).
* Removed unused DO_TIMES stuff from timemodule.c.  Added 'epoch' and
  'day0' globals (year where time.time() == 0 and day of the week the
  epoch started).

1 files changed, 31 insertions, 5 deletions

diff --git a/Python/pythonmain.c b/Python/pythonmain.c
index 760e5da..ac1d86a 100644
--- a/Python/pythonmain.c
+++ b/Python/pythonmain.c
@@ -26,8 +26,9 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 #include "allobjects.h"
 
-extern int debugging; /* Needed by parser.c */
-extern int verbose; /* Needed by import.c */
+extern int debugging; /* Defined in parser.c */
+extern int verbose; /* Defined in import.c */
+extern int killprint; /* Defined in ceval.c */
 
 /* Interface to getopt(): */
 extern int optind;
@@ -52,10 +53,14 @@ main(argc, argv)
 		debugging = 1;
 	if ((p = getenv("PYTHONVERBOSE")) && *p != '\0')
 		verbose = 1;
+	if ((p = getenv("PYTHONINSPECT")) && *p != '\0')
+		inspect = 1;
+	if ((p = getenv("PYTHONKILLPRINT")) && *p != '\0')
+		killprint = 1;
 	
-	initargs(&argc, &argv); /* Defined in config*.c */
+	initargs(&argc, &argv);
 
-	while ((c = getopt(argc, argv, "c:div")) != EOF) {
+	while ((c = getopt(argc, argv, "c:dikv")) != EOF) {
 		if (c == 'c') {
 			/* -c is the last option; following arguments
 			   that look like options are left for the
@@ -77,6 +82,10 @@ main(argc, argv)
 			inspect++;
 			break;
 
+		case 'k':
+			killprint++;
+			break;
+
 		case 'v':
 			verbose++;
 			break;
@@ -85,8 +94,25 @@ main(argc, argv)
 
 		default:
 			fprintf(stderr,
-				"usage: %s [-c cmd | file | -] [arg] ...\n",
+"usage: %s [-d] [-i] [-k] [-v] [-c cmd | file | -] [arg] ...\n",
 				argv[0]);
+			fprintf(stderr, "\
+\n\
+Options and arguments (and corresponding environment variables):\n\
+-d     : debug output from parser (also PYTHONDEBUG=x)\n\
+-i     : inspect interactively after running script (also PYTHONINSPECT=x)\n\
+-k     : kill printing expression statement (also PYTHONKILLPRINT=x)\n\
+-v     : verbose (trace import statements) (also PYTHONVERBOSE=x)\n\
+-c cmd : program passed in as string (terminates option list)\n\
+file   : program read from script file\n\
+-      : program read from stdin (default; interactive mode if a tty)\n\
+arg ...: arguments passed to program in sys.argv[1:]\n\
+\n\
+Other environment variables:\n\
+PYTHONSTARTUP: file executed on interactive startup (no default)\n\
+PYTHONPATH   : colon-separated list of directories prefixed to the\n\
+               default module search path.  The result is sys.path.\n\
+");
 			exit(2);
 			/*NOTREACHED*/