diff options
| -rw-r--r-- | Lib/asynchat.py | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/Lib/asynchat.py b/Lib/asynchat.py index 3b2b37d..762070f 100644 --- a/Lib/asynchat.py +++ b/Lib/asynchat.py @@ -280,20 +280,18 @@ class fifo: # characters matched. # for example: # f_p_a_e ("qwerty\r", "\r\n") => 1 -# f_p_a_e ("qwerty\r\n", "\r\n") => 2 # f_p_a_e ("qwertydkjf", "\r\n") => 0 +# f_p_a_e ("qwerty\r\n", "\r\n") => <undefined> # this could maybe be made faster with a computed regex? # [answer: no; circa Python-2.0, Jan 2001] -# python: 18307/s +# new python: 28961/s +# old python: 18307/s # re: 12820/s # regex: 14035/s def find_prefix_at_end (haystack, needle): - nl = len(needle) - result = 0 - for i in range (1,nl): - if haystack[-(nl-i):] == needle[:(nl-i)]: - result = nl-i - break - return result + l = len(needle) - 1 + while l and not haystack.endswith(needle[:l]): + l -= 1 + return l |