perl -E 'say for "0".."-1"' #### perl -E 'say for "0".."^1"' #### perl -E 'say for "0".. "##"' #### perl -E 'say for "0" .. "abc"'
## perl -E 'say for "0".."^1"' ##
## perl -E 'say for "0".. "##"' ##
## perl -E 'say for "0" .. "abc"'