Don't try to pop from an empty list and downcase the result
---
lisp/org-taskjuggler.el | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/lisp/org-taskjuggler.el b/lisp/org-taskjuggler.el
index 23f4b62..6367b7a 100644
--- a/lisp/org-taskjuggler.el
+++ b/lisp/org-taskjuggler.el
@@ -503,7 +503,7 @@ finally add more underscore characters (\"_\")."
(parts (split-string headline))
(id (org-taskjuggler-clean-id (downcase (pop parts)))))
; try to add more parts of the headline to make it unique
- (while (member id unique-ids)
+ (while (and (member id unique-ids) (car parts))
(setq id (concat id "_" (org-taskjuggler-clean-id (downcase (pop
parts))))))
; if its still not unique add "_"
(while (member id unique-ids)
--
1.7.0.4
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