SF patch #467455 : Enhanced environment variables, by Toby Dickenson.

   This patch changes to logic to:

   if env.var. set and non-empty:
       if env.var. is an integer:
           set flag to that integer
   if flag is zero: # [actually, <= 0 --GvR]
       set flag to 1

   Under this patch, anyone currently using
   PYTHONVERBOSE=yes will get the same output as before.

   PYTHONVERBNOSE=2 will generate more verbosity than
   before.

   The only unusual case that the following three are
   still all equivalent:
   PYTHONVERBOSE=yespleas
   PYTHONVERBOSE=1
   PYTHONVERBOSE=0

1 files changed, 8 insertions, 2 deletions

diff --git a/Misc/python.man b/Misc/python.man
index 6723e13..609c2ca 100644
--- a/Misc/python.man
+++ b/Misc/python.man
@@ -339,9 +339,14 @@ Set this to a non-empty string to cause the \fItime\fP module to
 require dates specified as strings to include 4-digit years, otherwise
 2-digit years are converted based on rules described in the \fItime\fP
 module documnetation.
+.IP PYTHONOPTIMIZE
+If this is set to a non-empty string it is equivalent to specifying
+the \fB\-O\fP option. If set to an integer, it is equivalent to
+specifying \fB\-O\fP multiple times.
 .IP PYTHONDEBUG
 If this is set to a non-empty string it is equivalent to specifying
-the \fB\-d\fP option.
+the \fB\-d\fP option. If set to an integer, it is equivalent to
+specifying \fB\-d\fP multiple times.
 .IP PYTHONINSPECT
 If this is set to a non-empty string it is equivalent to specifying
 the \fB\-i\fP option.
@@ -350,7 +355,8 @@ If this is set to a non-empty string it is equivalent to specifying
 the \fB\-u\fP option.
 .IP PYTHONVERBOSE
 If this is set to a non-empty string it is equivalent to specifying
-the \fB\-v\fP option.
+the \fB\-v\fP option. If set to an integer, it is equivalent to
+specifying \fB\-v\fP multiple times. 
 .SH AUTHOR
 .nf
 Guido van Rossum