Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
#--- aa aa ;--- bb bb ;--- end # RUN: rm -rf %t # RUN: split-file --leading-lines %s %t # RUN: diff %S/Inputs/basic-aa.crlf %t/aa # RUN: diff %S/Inputs/basic-bb.crlf %t/bb