Improve the heuristic for truncating the traceback

diff --git a/build-hooks/post-build b/build-hooks/post-build
index 1851cd7..d9dfb27 100755 (executable)
--- a/build-hooks/post-build
+++ b/build-hooks/post-build
@@ -66,8 +66,14 @@ def build_completion_msg(succeeded, values, verbose=True, success=lambda x: x, f
     """Format a message reporting the results of a build"""
     values = dict(values)
     if not verbose and values['traceback'] is not None:
-        # TODO: better heuristic
-        values['traceback'] = textwrap.fill('\n'.join(values['traceback'].split('\n')[-2:]))
+        split = values['traceback'].split('\n')
+        # Here, have a hackish heuristic
+        truncated = '(empty)'
+        for i in xrange(2, len(split)):
+            truncated = textwrap.fill('\n'.join(split[-i:]))
+            if len(truncated) >= 10:
+                break
+        values['traceback'] = truncated
 
     if succeeded:
         values['result'] = success(values['result'])