Documentation for -fbreak-on-error

[ghc-hetmet.git] / docs / users_guide / ghci.xml

diff --git a/docs/users_guide/ghci.xml b/docs/users_guide/ghci.xml
index 69078d5..b1e36ec 100644 (file)
--- a/docs/users_guide/ghci.xml
+++ b/docs/users_guide/ghci.xml
@@ -1335,9 +1335,13 @@ a :: a
         <literal>:trace</literal> and <literal>:history</literal> to establish
         the context.  However, <literal>head</literal> is in a library and
         we can't set a breakpoint on it directly.  For this reason, GHCi
-        provides the flag <literal>-fbreak-on-exception</literal> which causes
-        the evaluator to stop when an exception is thrown, just as it does when
-        a breakpoint is hit.  This is only really useful in conjunction with
+        provides the flags <literal>-fbreak-on-exception</literal> which causes
+        the evaluator to stop when an exception is thrown, and <literal>
+       -fbreak-on-error</literal>, which works similarly but stops only on 
+       uncaught exceptions. When stopping at an exception, GHCi will act 
+       just as it does when a breakpoint is hit, with the deviation that it
+       will not show you any source code location. Due to this, these 
+       commands are only really useful in conjunction with
         <literal>:trace</literal>, in order to log the steps leading up to the
         exception.  For example:</para>