55 	register char*	t;  in pathcanon()  local
76 	p = r = s = t = path;  in pathcanon()
77 	for (;;) switch (*t++ = *s++)  in pathcanon()
90 			t -= 2;  in pathcanon()
93 			if ((flags & (PATH_DOTDOT|PATH_EXISTS)) == PATH_DOTDOT && (t - 2) >= v)  in pathcanon()
97 				*(t - 2) = 0;  in pathcanon()
103 				*(t - 2) = '.';  in pathcanon()
106 			if (t - 5 < r) r = t;  in pathcanon()
108 			if (t - 5 < r)  in pathcanon()
110 				if (t - 4 == r) t = r + 1;  in pathcanon()
111 				else r = t;  in pathcanon()
114 			else for (t -= 5; t > r && *(t - 1) != '/'; t--);  in pathcanon()
123 				o = t;  in pathcanon()
124 				if ((t -= 5) <= path) t = path + 1;  in pathcanon()
125 				c = *t;  in pathcanon()
126 				*t = 0;  in pathcanon()
130 					if (t == r + 1) x = r;  in pathcanon()
131 					v = s = t = x;  in pathcanon()
135 					*t = c;  in pathcanon()
136 					t = o;  in pathcanon()
140 			r = t;  in pathcanon()
144 			if ((flags & PATH_PHYSICAL) && loop < 32 && (t - 1) > path)  in pathcanon()
149 				c = *(t - 1);  in pathcanon()
150 				*(t - 1) = 0;  in pathcanon()
152 				*(t - 1) = c;  in pathcanon()
158 					v = s = t = p;  in pathcanon()
174 …if (dots >= 4 && (flags & PATH_EXISTS) && (t - 1) >= v && (t > path + 1 || t > path && *(t - 1) &&…  in pathcanon()
178 			*(t - 1) = 0;  in pathcanon()
184 			v = t;  in pathcanon()
185 			if (*s) *(t - 1) = '/';  in pathcanon()
189 			if (t > path && !*(t - 1)) t--;  in pathcanon()
190 			if (t == path) *t++ = '.';  in pathcanon()
192 			else if (t > path + 1 && *(t - 1) == '/') t--;  in pathcanon()
194 			else if ((s <= path || *(s - 1) != '/') && t > path + 1 && *(t - 1) == '/') t--;  in pathcanon()
196 			*t = 0;  in pathcanon()
198 			return t;  in pathcanon()
201 		p = t;  in pathcanon()