GitLab

(vc-print-log-internal): Insert buttons to request more entries
when limiting the output.

* vc-sccs.el (vc-sccs-print-log):
* vc-rcs.el (vc-rcs-print-log):
* vc-cvs.el (vc-cvs-print-log):
* vc-git.el (vc-git-print-log): Return 'limit-unsupported when
LIMIT is non-nil.