1. nowrap chip mid-sentence (300px box, 20px lines)

alpha beta gamma delta epsilon zeta eta theta nowrap chip here iota kappa lambda mu nu xi omicron pi rho sigma tau

2. control: same text, no chip

alpha beta gamma delta epsilon zeta eta theta nowrap chip here iota kappa lambda mu nu xi omicron pi rho sigma tau

3. chip alone on a line, wider than the box

one single very long unbreakable chip

3b. overflow starts before the chip

alpha beta gamma delta epsilon zeta eta theta iota kappa lambda mu nu xi omicron pi rho sigma tau upsilon phi chi psi omegachip tail words after the chip

alpha beta gamma delta epsilon zeta eta theta iota kappa lambda mu nu xi omicron pi rho sigma tau upsilon phi chi psi omega chip tail words after the chip

4. ch unit

 
00000000000000000000
 
000000000000000000000000000000

results

JS is off -- check by eye: boxes 1 and 2 must have the same number of lines
and nothing may stick out past the grey borders; the 20ch/30ch boxes must be
exactly as wide as the row of zeroes under them.