[PATCH v2 2/3] emacs: notmuch-check-exit-status bugfix

[Mark Walters]

This function prints diagnostic information in the event of an
error. However, one of the callers has an optional :stdin-string
keyword argument. This causes the error printing routine to error
itself.

Rather than reach notmuch-check-exit-status about the possible keyword
arguments (currently only one but could be more in the future) this
commit just tells notmuch-check-exit-status how to print non-string arguments.
---

This is an existing bug in the emacs library which the postpone code
is liable to hit (if you try to save when the database is locked).

emacs/notmuch-lib.el | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el
index f05ded6..36a7262 100644
--- a/emacs/notmuch-lib.el
+++ b/emacs/notmuch-lib.el
@@ -790,9 +790,15 @@ You may need to restart Emacs or upgrade your notmuch package."))
 		    (insert-file-contents err-file)
 		    (unless (eobp)
 		      (buffer-string)))))
+	   (command-string
+	    (mapconcat (lambda (arg)
+			 (shell-quote-argument
+			  (cond ((stringp arg) arg)
+				((symbolp arg) (symbol-name arg))
+				(t "*UNKNOWN ARGUMENT*"))))
+		       command " "))
 	   (extra
-	    (concat
-	     "command: " (mapconcat #'shell-quote-argument command " ") "\n"
+	    (concat "command: " command-string "\n"
 	     (if (integerp exit-status)
 		 (format "exit status: %s\n" exit-status)
 	       (format "exit signal: %s\n" exit-status))
-- 
2.1.4