Admit that we'll never add the args for a "call" event to the profile
and trace functions; this now declares that None will be passed for the
"call" event.
This closes SF bug/suggestion #460315.
diff --git a/Doc/lib/libpdb.tex b/Doc/lib/libpdb.tex
index d457c95..89ec556 100644
--- a/Doc/lib/libpdb.tex
+++ b/Doc/lib/libpdb.tex
@@ -355,24 +355,25 @@
\item[\code{'call'}]
A function is called (or some other code block entered). The global
-trace function is called; arg is the argument list to the function;
+trace function is called; \var{arg} is \code{None};
the return value specifies the local trace function.
\item[\code{'line'}]
The interpreter is about to execute a new line of code (sometimes
multiple line events on one line exist). The local trace function is
-called; arg in None; the return value specifies the new local trace
-function.
+called; \var{arg} is \code{None}; the return value specifies the new
+local trace function.
\item[\code{'return'}]
A function (or other code block) is about to return. The local trace
-function is called; arg is the value that will be returned. The trace
-function's return value is ignored.
+function is called; \var{arg} is the value that will be returned. The
+trace function's return value is ignored.
\item[\code{'exception'}]
-An exception has occurred. The local trace function is called; arg is
-a triple (exception, value, traceback); the return value specifies the
-new local trace function
+An exception has occurred. The local trace function is called;
+\var{arg} is a triple \code{(\var{exception}, \var{value},
+\var{traceback})}; the return value specifies the new local trace
+function.
\end{description}