_PWF_SHELL
if ((src->pw_fields & _PWF_SHELL) &&
COPY(pw_shell, _PWF_SHELL);
pw->pw_fields |= _PWF_SHELL;
fields &= ~_PWF_SHELL;
#define PW_SHELL _PWF_SHELL
else if ((pwd->pw_fields & _PWF_SHELL) != 0)
yp_password.pw_fields |= _PWF_SHELL;