Unraisable traceback docs.

CHANGES.rst

@@ -64,6 +64,9 @@ Features added
   oft-used utility code once in a separate directory rather than as
   part of each generated file.
 
+* ``unraisable_tracebacks`` directive added to control printing of
+  tracebacks of unraisable exceptions.
+
 Bugs fixed
 ----------
 

docs/src/reference/compilation.rst

@@ -363,6 +363,9 @@ Cython code.  Here is the list of currently supported directives:
     internally without paying attention to cache consistency, this option can
     be set to False.
 
+``unraisable_tracebacks`` (True / False)
+    Whether to print tracebacks when suppressing unraisable exceptions.
+
 
 How to set directives
 ---------------------