I have done rebase for 6.18.02 beta (which is direct predecessor of 6.19.00).
For now, the work is done here:
$ git clone git://fedorapeople.org/~praiskup/tcsh-rebase-6.19.00
This bug appears to have been reported against 'rawhide' during the Fedora 22 development cycle.
Changing version to '22'.
More information and reason for this action is here:
*** This bug has been marked as a duplicate of bug 1224014 ***