further performance tweaks to sstrstr() function

improves sstrstr function by using KMP string search algorithm

reduces amount of realloc calls in sstrsplit

adds an optimization for one-byte delimiters to sstrsplit (will take effect after planned reimplementation of sstrstr)

(0) -100 -30 -10 -4 +4 +10 +30 +100 +300 tip

mercurial