no way to compare when less than two revisions

Differences

This shows you the differences between two versions of the page.

@@ Line 1: / Line 1: @@
+# $EPIC: set_log_rewrite.txt,v 1.2 2006/08/20 13:51:17 sthalik Exp $
+======Synopsis:======
+[[set]](4) log_rewrite
+======Description:======
+If this /[[SET]] is defined (by default, it is un-set), then every
+time a LOGICAL line of output is about to be sent to a window, the
+/[[SET]] value is expanded, and the result of that expansion is substituted
+for the original text.  The expansion is parsed in the context that:
+$0      The window refnum the output is going to
+$1-     The text itself.
+======Examples:======
+This would cause all output to all windows to be preceded in the logfile
+by +++
+	/SET LOG_REWRITE +++$1-
+This would return proceed all output to all logfiles with the output of
+the user defined function $myfunc() called with the window number.
+	/SET LOG_REWRITE $myfunc($0) $1-
+======Notes:======
+When changing /[[set output_rewrite]] inside of an alias, please remember
+that $'s are expanded before the /[[set]] is called, and so things like
+$1- or $myfunc($0) would be expanded at the /set time and not at the
+rewrite time.  Make sure to double up your $$'s in such cases!
+======Practical:======
+This provides an effective way to alter data as it is written to
+logfiles.