Test of all features involved in do_text()
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Reverse video + red on yellow:      [31;43;7m bing! [m
Yellow on red should look the same: [33;41m bong! [m

Basic attrs, combining chars, both widths: [1mBold[22m [5mblink[25m [4munder[24m [9mstrike[29m [Λ̊][チ][text]
Wide char should be off by 1 narrow char: [1mBold[22m [5mblink[25m [4munder[24m [9mstrike[29m [Λ̊][チ][text]

Double width, double height. Should be red top, magenta bottom, blue DW only:
#3[41m[1mBold[22m [5mblink[25m [4munder[24m [9mstrike[29m [Λ̊][チ][text][m
#4[45m[1mBold[22m [5mblink[25m [4munder[24m [9mstrike[29m [Λ̊][チ][text][m
#6[44m[1mBold[22m [5mblink[25m [4munder[24m [9mstrike[29m [Λ̊][チ][text][m

