Document the -W option as best as I can.

gvanrossum · gvanrossum · commit 1378c32dd819 · 2000-12-19T03:21:54.000Z
Get rid of BeOpen references.
diff --git a/Misc/python.man b/Misc/python.man
@@ -33,6 +33,10 @@ python \- an interpreted, interactive, object-oriented programming language
 [
 .B \-V
 ]
+[
+.B \-W
+.I argument
+]
 .br
        [
 .B \-c
@@ -116,6 +120,71 @@ Prints the usage for the interpreter executable and exits.
 .B \-V
 Prints the Python version number of the executable and exits.
 .TP
+.BI "\-W " argument
+Warning control.  Python sometimes prints warning message to
+.IR sys.stderr .
+A typical warning message has the following form:
+.IB file ":" line ": " category ": " message.
+By default, each warning is printed once for each source line where it
+occurs.  This option controls how often warnings are printed.
+Multiple
+.B \-W
+options may be given; when a warning matches more than one
+option, the action for the last matching option is performed.
+Invalid
+.B \-W
+options are ignored (a warning message is printed about invalid
+options when the first warning is issued).  Warnings can also be
+controlled from within a Python program using the
+.I warnings
+module.
+
+The simplest form of
+.I argument
+is one of the following
+.I action
+strings (or a unique abbreviation):
+.B ignore
+to ignore all warnings;
+.B default
+to explicitly request the default behavior (printing each warning once
+per source line);
+.B all
+to print a warning each time it occurs (this may generate many
+messages if a warning is triggered repeatedly for the same source
+line, e.g. inside a loop);
+.B module
+to print each warning only only the first time it occurs in each
+module;
+.B once
+to print each warning only the first time it occurs in the program; or
+.B error
+to raise an exception instead of printing a warning message.
+
+The full form of
+.I argument
+is
+.IB action : message : category : module : line.
+Here,
+.I action
+is as explained above but only applies to messages that match the
+remaining fields.  Empty fields match all values; trailing empty
+fields may be omitted.  The
+.I message
+field matches the start of the warning message printed; this match is
+case-insensitive.  The
+.I category
+field matches the warning category.  This must be a class name; the
+match test whether the actual warning category of the message is a
+subclass of the specified warning category.  The full class name must
+be given.  The
+.I module
+field matches the (fully-qualified) module name; this match is
+case-sensitive.  The
+.I line
+field matches the line number, where zero matches all line numbers and
+is thus equivalent to an omitted line number.
+.TP
 .BI "\-c " command
 Specify the command to execute (see next section).
 This terminates the option list (following options are passed as
@@ -250,20 +319,14 @@ the \fB\-v\fP option.
 .SH AUTHOR
 .nf
 Guido van Rossum
-BeOpen.com
-160 Saratoga Avenue
-Santa Clara, CA 95051
-USA
 .PP
-E-mail: guido@beopen.com, guido@python.org
+E-mail: guido@python.org
 .fi
 .PP
 And a cast of thousands.
 .SH INTERNET RESOURCES
 Main website: http://www.python.org
 .br
-BeOpen development team: http://pythonlabs.com
-.br
 Community website: http://starship.python.net
 .br
 Developer resources:
