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+From: Mark Walters <markwalters1009@gmail.com>\r
+To: Austin Clements <amdragon@MIT.EDU>, notmuch@notmuchmail.org\r
+Subject: Re: [PATCH 07/10] emacs: Use --use-schema for search\r
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+Date: Sat, 08 Dec 2012 08:48:26 +0000\r
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+\r
+On Sun, 02 Dec 2012, Austin Clements <amdragon@MIT.EDU> wrote:\r
+> We detect the special exit statuses and use these to produce specific\r
+> diagnostic messages.\r
+> ---\r
+> emacs/notmuch-lib.el | 32 ++++++++++++++++++++++++++++++++\r
+> emacs/notmuch.el | 17 +++++++++++++----\r
+> 2 files changed, 45 insertions(+), 4 deletions(-)\r
+>\r
+> diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el\r
+> index 9402456..49b0da6 100644\r
+> --- a/emacs/notmuch-lib.el\r
+> +++ b/emacs/notmuch-lib.el\r
+> @@ -325,6 +325,38 @@ string), a property list of face attributes, or a list of these."\r
+> (put-text-property pos next 'face (cons face cur))\r
+> (setq pos next)))))\r
+> \r
+> +(defun notmuch-pop-up-error (msg)\r
+> + "Pop up an error buffer displaying MSG."\r
+> +\r
+> + (let ((buf (get-buffer-create "*Notmuch errors*")))\r
+> + (with-current-buffer buf\r
+> + (view-mode)\r
+> + (let ((inhibit-read-only t))\r
+> + (erase-buffer)\r
+> + (insert msg)\r
+> + (unless (bolp)\r
+> + (insert "\n"))\r
+> + (goto-char (point-min))))\r
+> + (pop-to-buffer buf)))\r
+\r
+I am not sure about the erase-buffer in the above: do we definitely want\r
+to remove all previous error information? For version mismatch possibly\r
+we do but in patch 9 it is done for all show command-line error returns.\r
+Incidentally why does show always pop-up an error but search only for\r
+version-mismatches?\r
+\r
+Otherwise this looks good to me (but I am not that familiar with lisp\r
+error handling)\r
+\r
+Best wishes\r
+\r
+Mark\r
+\r
+\r
+\r
+\r
+\r
+\r
+> +(defun notmuch-version-mismatch-error (exit-status)\r
+> + "Signal a schema version mismatch error.\r
+> +\r
+> +EXIT-STATUS must be the exit status of the notmuch CLI command,\r
+> +and must have the value 20 or 21. This function will pop up an\r
+> +error buffer with a descriptive message and signal an error."\r
+> + (cond ((= exit-status 20)\r
+> + (notmuch-pop-up-error "Error: Version mismatch.\r
+> +Emacs requested an older output format than supported by the notmuch CLI.\r
+> +You may need to restart Emacs or upgrade your notmuch Emacs package."))\r
+> + ((= exit-status 21)\r
+> + (notmuch-pop-up-error "Error: Version mismatch.\r
+> +Emacs requested a newer output format than supported by the notmuch CLI.\r
+> +You may need to restart Emacs or upgrade your notmuch package."))\r
+> + (t\r
+> + (error "Bad exit status %d" exit-status)))\r
+> + (error "notmuch CLI version mismatch"))\r
+> +\r
+> ;; Compatibility functions for versions of emacs before emacs 23.\r
+> ;;\r
+> ;; Both functions here were copied from emacs 23 with the following copyright:\r
+> diff --git a/emacs/notmuch.el b/emacs/notmuch.el\r
+> index f9454d8..e1f28ca 100644\r
+> --- a/emacs/notmuch.el\r
+> +++ b/emacs/notmuch.el\r
+> @@ -644,6 +644,7 @@ of the result."\r
+> (exit-status (process-exit-status proc))\r
+> (never-found-target-thread nil))\r
+> (when (memq status '(exit signal))\r
+> + (catch 'return\r
+> (kill-buffer (process-get proc 'parse-buf))\r
+> (if (buffer-live-p buffer)\r
+> (with-current-buffer buffer\r
+> @@ -655,8 +656,16 @@ of the result."\r
+> (insert "Incomplete search results (search process was killed).\n"))\r
+> (when (eq status 'exit)\r
+> (insert "End of search results.")\r
+> - (unless (= exit-status 0)\r
+> - (insert (format " (process returned %d)" exit-status)))\r
+> + (cond ((or (= exit-status 20) (= exit-status 21))\r
+> + (kill-buffer)\r
+> + (condition-case err\r
+> + (notmuch-version-mismatch-error exit-status)\r
+> + ;; Strange things happen when you signal\r
+> + ;; an error from a sentinel.\r
+> + (error (throw 'return nil))))\r
+> + ((/= exit-status 0)\r
+> + (insert (format " (process returned %d)"\r
+> + exit-status))))\r
+> (insert "\n")\r
+> (if (and atbob\r
+> (not (string= notmuch-search-target-thread "found")))\r
+> @@ -664,7 +673,7 @@ of the result."\r
+> (when (and never-found-target-thread\r
+> notmuch-search-target-line)\r
+> (goto-char (point-min))\r
+> - (forward-line (1- notmuch-search-target-line))))))))\r
+> + (forward-line (1- notmuch-search-target-line)))))))))\r
+> \r
+> (defcustom notmuch-search-line-faces '(("unread" :weight bold)\r
+> ("flagged" :foreground "blue"))\r
+> @@ -938,7 +947,7 @@ Other optional parameters are used as follows:\r
+> (let ((proc (start-process\r
+> "notmuch-search" buffer\r
+> notmuch-command "search"\r
+> - "--format=json"\r
+> + "--format=json" "--use-schema=1"\r
+> (if oldest-first\r
+> "--sort=oldest-first"\r
+> "--sort=newest-first")\r
+> -- \r
+> 1.7.10.4\r
+>\r
+> _______________________________________________\r
+> notmuch mailing list\r
+> notmuch@notmuchmail.org\r
+> http://notmuchmail.org/mailman/listinfo/notmuch\r