ref: 73e115aab038880a68c9f73b5c49d8fa12d0e5e2 dir: /sys/src/ape/lib/ap/gen/strchr.c/
#include <string.h> char* strchr(const char *s, int c) { char c1; if(c == 0) { while(*s++) ; return s-1; } while(c1 = *s++) if(c1 == c) return s-1; return 0; }