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

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We cache the result so that we can call the function many places
without worrying about the cost.
This commit is contained in:
David Bremner 2014-01-26 14:13:48 -04:00
parent aa57e9d2b8
commit 71d6a40581
1 changed files with 11 additions and 0 deletions
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11
emacs/notmuch-lib.el
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@ -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