Deleting the last element of a seq-zip provokes a NPE

Description

When the last element in a seq-zip is deleted, a NullPointerException is raised. I expect the resulting zipper to represent an empty sequence. Contrast this behavior with that of a vector-zip which returns a zipper representing an empty vector when the last element is deleted.

Environment

None

Assignee

Unassigned

Reporter

Alex Miller

Labels

Approval

Triaged

Patch

Code and Test

Priority

Minor

Affects versions