47a48,49
> inline static const char *welldefine(const char *s)  ATTRIBUTE_CONST;
> 
50c52
< welldefine(const char *s) ATTRIBUTE_CONST
---
> welldefine(const char *s) 
52,54c54,55
< 	if(s != NULL)
< 		return s;
< 	return emptystring;
---
> 	static const char empty[] = {0};
> 	return s ? s : empty;
160a162
> 			static const char empty[] = {0};
162,164c164,165
< 			if(t < 0)
< 				return emptystring;
< 			return welldefine(argv[t]);
---
> 			
> 			return t < 0 ? empty : welldefine(argv[t]);