Hello all,
This afternoon I stumbled upon a weirdness I can't explain. I hope some
misc-guru can give a clue.
I was parsing a 45kB html document on my OpenBSD 5.3 with the help of
sed to extract a value and it was awfully slow. Quoting the input string
gave it a real boost :
$ time echo "$webpage" | sed -n -r
's/(.*)\"token\":\"([a-zA-Z0-9]+)\"(.*)/\2/p'
0m0.19s real 0m0.00s user 0m0.00s system
$ time echo $webpage | sed -n -r
's/(.*)\"token\":\"([a-zA-Z0-9]+)\"(.*)/\2/p'>
2m14.39s real 2m12.95s user 0m0.00s system
What could be the explanation ?
Doing the same with GNU sed is instantaneous in both case (quoted/unquoted).
Thank you in advance,
Denis
