+(defun notmuch-search-get-result (&optional pos)
+ "Return the result object for the thread at POS (or point).
+
+If there is no thread at POS (or point), returns nil."
+ (get-text-property (or pos (point)) 'notmuch-search-result))
+
+(defun notmuch-search-result-beginning (&optional pos)
+ "Return the point at the beginning of the thread at POS (or point).
+
+If there is no thread at POS (or point), returns nil."
+ (when (notmuch-search-get-result pos)
+ ;; We pass 1+point because previous-single-property-change starts
+ ;; searching one before the position we give it.
+ (previous-single-property-change (1+ (or pos (point)))
+ 'notmuch-search-result nil (point-min))))
+
+(defun notmuch-search-result-end (&optional pos)
+ "Return the point at the end of the thread at POS (or point).
+
+The returned point will be just after the newline character that
+ends the result line. If there is no thread at POS (or point),
+returns nil"
+ (when (notmuch-search-get-result pos)
+ (next-single-property-change (or pos (point)) 'notmuch-search-result
+ nil (point-max))))
+
+(defun notmuch-search-foreach-result (beg end function)
+ "Invoke FUNCTION for each result between BEG and END.
+
+FUNCTION should take one argument. It will be applied to the
+character position of the beginning of each result that overlaps
+the region between points BEG and END. As a special case, if (=
+BEG END), FUNCTION will be applied to the result containing point
+BEG."
+
+ (lexical-let ((pos (notmuch-search-result-beginning beg))
+ ;; End must be a marker in case function changes the
+ ;; text.
+ (end (copy-marker end))
+ ;; Make sure we examine at least one result, even if
+ ;; (= beg end).
+ (first t))
+ ;; We have to be careful if the region extends beyond the results.
+ ;; In this case, pos could be null or there could be no result at
+ ;; pos.
+ (while (and pos (or (< pos end) first))
+ (when (notmuch-search-get-result pos)
+ (funcall function pos))
+ (setq pos (notmuch-search-result-end pos)
+ first nil))))
+;; Unindent the function argument of notmuch-search-foreach-result so
+;; the indentation of callers doesn't get out of hand.
+(put 'notmuch-search-foreach-result 'lisp-indent-function 2)
+