Yes it should - you haven't anchored the string. If my memory serves me
correctly, the engine sees that "rno" of supernova matches the first three
tokens in the pattern. The engine then sucks in "va" to match the next
two tokens (.?.?) and fails because the v is already used. But, since the
To answer your second question first, a CHUNK is ( in this case ) a line
from a file. The word chunk is used simply because what constitutes a
line can frequently be changed - I have a bad habit of toying with the
input record separator.
The warnings are not directly prohibiting execution. A
