Function is_pv_valid_char

pvar.c:4971–4977

}

static int is_pv_valid_char(char c)
{
	if((c>='0' && c<='9') || (c>='a' && c<='z') || (c>='A' && c<='Z')
			|| (c=='_') || (c=='.'))
		return 1;
	return 0;
}

char* pv_parse_spec(const str *in, const pv_spec_p e)
{