Test cases for reflow on resize

Run each case in an 80column window, then resize the window wider and see if the second line gets reflowed.

perl -E 'say "A"x100' # plain spillover
perl -E 'say "B"x80; say "B"x20' # plain CRLF movement
perl -E 'say "\e[79G".("C"x22)' # spillover after CUP

perl -E 'print "D"x100; print "\eM\e[79G\e[K\n\n"' # does EL cancel wraparound?
perl -E 'print "E"x100; print "\eM\e[79GEE\n"' # does overprint at column 80 after CUP still wrap?
perl -E 'print "F"x100; say "\e[GFF"' # does overprint at column 1 still wrap?
perl -E 'print "G"x100; say "\eM\e[@G"' # does ICH earlier disturb wrap?
perl -E 'print "H"x100; say "\eM\e[80G\e[@"' # does ICH at column 80 disturb wrap?
perl -E 'print "I"x100; say "\eM\e[G\e[80X"' # does DCH cancel wrap?