HelenOS sources

_strchrnul       1300 common/printf/printf_core.c 		const char *s = _strchrnul(&fmt[nxt], '%');
_strchrnul       1300 kernel/generic/common/printf/printf_core.c 		const char *s = _strchrnul(&fmt[nxt], '%');
_strchrnul       1300 uspace/lib/c/common/printf/printf_core.c 		const char *s = _strchrnul(&fmt[nxt], '%');