[PATCH 1/2] Make `notmuch-show-clean-address' parsing-error-proof.

[Carl Worth]

On Thu, 12 May 2011 17:56:25 +0400, Dmitry Kurochkin <dmitry.kurochkin at gmail.com> wrote:
> Mail-header-parse-address may fail for an invalid address.
> Before the change, this would result in empty notmuch-show buffer
> with an error message like: Scan error: "Unbalanced parentheses".
> The patch wraps the function in condition-case and returns
> unchanged address in case of error.

Thanks for the patch, Dmitry. I've just pushed this.

And thanks as well for the test case. I actually pushed the test-case
commit before the bug-fix commit. I like to do things in that order so
that I can:

	1. Apply the new test case
	2. Run "make test" and see the failure
	3. Apply the bug fix
	4. Run "make test" and see the test pass

With a sequence like that, it's very easy for me to feel very
comfortable committing the code.

-Carl
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