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comparison mercurial/ui.py @ 18965:0062508b1900

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ui: add support for fully printing chained exception stacks in ui.traceback() Currently, only SubrepoAbort has a cause chained to it.
author Matt Harbison <matt_harbison@yahoo.com>
date Sat, 09 Feb 2013 14:15:34 -0500
parents 18242716a014
children 5572f688e0a9
comparison
equal deleted inserted replaced
18964:ca480d710fe6 18965:0062508b1900
684 def traceback(self, exc=None): 684 def traceback(self, exc=None):
685 '''print exception traceback if traceback printing enabled. 685 '''print exception traceback if traceback printing enabled.
686 only to call in exception handler. returns true if traceback 686 only to call in exception handler. returns true if traceback
687 printed.''' 687 printed.'''
688 if self.tracebackflag: 688 if self.tracebackflag:
689 if exc: 689 if exc is None:
690 exc = sys.exc_info()
691 cause = getattr(exc[1], 'cause', None)
692
693 if cause is not None:
694 causetb = traceback.format_tb(cause[2])
695 exctb = traceback.format_tb(exc[2])
696 exconly = traceback.format_exception_only(cause[0], cause[1])
697
698 # exclude frame where 'exc' was chained and rethrown from exctb
699 self.write_err('Traceback (most recent call last):\n',
700 ''.join(exctb[:-1]),
701 ''.join(causetb),
702 ''.join(exconly))
703 else:
690 traceback.print_exception(exc[0], exc[1], exc[2], 704 traceback.print_exception(exc[0], exc[1], exc[2],
691 file=self.ferr) 705 file=self.ferr)
692 else:
693 traceback.print_exc(file=self.ferr)
694 return self.tracebackflag 706 return self.tracebackflag
695 707
696 def geteditor(self): 708 def geteditor(self):
697 '''return editor to use''' 709 '''return editor to use'''
698 if sys.platform == 'plan9': 710 if sys.platform == 'plan9':