[PATCH] emacs: add a function to heuristically test if the CLI is configured OK.

[Mark Walters]

This version LGTM +1.

(Just for the record there was some discussion on irc about switching to
the *notmuch errors* buffer but that is more complex and fragile so
let's go with this simple and effective solution.)

Best wishes

Mark


On Sun, 26 Jan 2014, David Bremner <david at tethera.net> wrote:
> We cache the result so that we can call the function many places
> without worrying about the cost.
> ---
> thanks to Tomi for catching the typos (uncommitted changes on my end).
>
>  emacs/notmuch-lib.el | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el
> index 2be409b..140d760 100644
> --- a/emacs/notmuch-lib.el
> +++ b/emacs/notmuch-lib.el
> @@ -168,6 +168,17 @@ Otherwise the output will be returned"
>        (notmuch-check-exit-status status (cons notmuch-command args) output)
>        output)))
>  
> +(defvar notmuch--cli-sane-p nil
> +  "Cache whether the CLI seems to be configured sanely.")
> +
> +(defun notmuch-cli-sane-p ()
> +  "Return t if the cli seems to be configured sanely."
> +  (unless notmuch--cli-sane-p
> +    (let ((status (call-process notmuch-command nil nil nil
> +				"config" "get" "user.primary_email")))
> +      (setq notmuch--cli-sane-p (= status 0))))
> +  notmuch--cli-sane-p)
> +
>  (defun notmuch-version ()
>    "Return a string with the notmuch version number."
>    (let ((long-string
> -- 
> 1.8.5.2
>
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