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getln2 - read one line of data
unsigned int clen;
getln2 reads a line of characters, terminated by a sep
character, from ss.
The line is returned in two pieces. The first piece is
stored in sa. The second piece is cont, a pointer to clen
characters inside the ss buffer. The second piece must be
copied somewhere else before ss is used again.
If getln2 sees end-of-input before it sees sep, it sets clen
to 0 and does not set cont. It puts the partial line into
getln2 normally returns 0. If it runs out of memory, or
encounters an error from ss, it returns -1, setting errno
stralloc(3), substdio(3), getln(3)
Man(1) output converted with