go run compress/main.go gettysburg.txt > gettys.ctw
compress/main.go:9:2: no required module provides package github.com/fumin/ctw: go.mod file not found in current directory or any parent directory; see 'go help modules
Btw, many thanks for sharing your CTW implementation.
Small fix to support go modules.
Issue before fix
Btw, many thanks for sharing your CTW implementation.