[StGit PATCH 1/6] Use a special exit code for bugs

["Karl Hasselström" <kha@treskal.com>]

Use a special exit code (4) for any error condition that indicates a
bug in StGit. This will be useful in the test suite.

Signed-off-by: Karl Hasselström <kha@treskal.com>

---

 stgit/main.py  |   11 +++++++----
 stgit/utils.py |    1 +
 2 files changed, 8 insertions(+), 4 deletions(-)


diff --git a/stgit/main.py b/stgit/main.py
index 79044b0..663fdec 100644
--- a/stgit/main.py
+++ b/stgit/main.py
@@ -18,7 +18,7 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 """
 
-import sys, os
+import sys, os, traceback
 from optparse import OptionParser
 
 import stgit.commands
@@ -279,10 +279,13 @@ def main():
     except (StgException, IOError, ParsingError, NoSectionError), err:
         out.error(str(err), title = '%s %s' % (prog, cmd))
         if debug_level > 0:
-            raise
-        else:
-            sys.exit(utils.STGIT_COMMAND_ERROR)
+            traceback.print_exc()
+        sys.exit(utils.STGIT_COMMAND_ERROR)
     except KeyboardInterrupt:
         sys.exit(utils.STGIT_GENERAL_ERROR)
+    except:
+        out.error('Unhandled exception:')
+        traceback.print_exc()
+        sys.exit(utils.STGIT_BUG_ERROR)
 
     sys.exit(ret or utils.STGIT_SUCCESS)
diff --git a/stgit/utils.py b/stgit/utils.py
index b75c3b4..cd52382 100644
--- a/stgit/utils.py
+++ b/stgit/utils.py
@@ -327,6 +327,7 @@ STGIT_SUCCESS = 0        # everything's OK
 STGIT_GENERAL_ERROR = 1  # seems to be non-command-specific error
 STGIT_COMMAND_ERROR = 2  # seems to be a command that failed
 STGIT_CONFLICT = 3       # merge conflict, otherwise OK
+STGIT_BUG_ERROR = 4      # a bug in StGit
 
 def strip_leading(prefix, s):
     """Strip leading prefix from a string. Blow up if the prefix isn't