[Zope-Coders] TAL on-error

[Guido van Rossum]

> Because of the circumstances surrounding the error reports, I have a
> theory that TAL "on-error" statements allow folks to trap and ignore
> ConflictErrors, resulting in the inadvertent commit of half-finished
> transactions.
> 
> I've looked at the TAL source and it doesn't appear that TAL does
> anything special with ConflictErrors, which is wrong (it needs to let
> them pass through, always).

Are there any unqualified 'except:' clauses?  Perhaps those should be
changed into

    except ConflictError:
        raise
    except:
        ...what whas there before...

--Guido van Rossum (home page: http://www.python.org/~guido/)