ref: 1caaa0318b216bbbe6c18a7d9c27f87fa34c9a31
dir: /sys/src/libc/port/strchr.c/
#include <u.h> #include <libc.h> char* strchr(char *s, int c) { char c0 = c; char c1; if(c == 0) { while(*s++) ; return s-1; } while(c1 = *s++) if(c1 == c0) return s-1; return 0; }