Revert "rewrite: Raise error if rewrite path does not begin with / #1610 (#1629)"

This reverts commit e0ed7093.

caddyhttp/rewrite/setup.go

@@ -76,10 +76,6 @@ func rewriteParse(c *caddy.Controller) ([]httpserver.HandlerConfig, error) {
 						return nil, c.ArgErr()
 					}
 					to = strings.Join(args1, " ")
-					// ensure rewrite path begins with /
-					if !strings.HasPrefix(to, "/") {
-						return nil, c.Errf("%s:%d - Syntax error: Rewrite path must begin with '/'. Provided: '%s'", c.File(), c.Line(), c.Val())
-					}
 				case "ext":
 					args1 := c.RemainingArgs()
 					if len(args1) == 0 {
@@ -94,20 +90,14 @@ func rewriteParse(c *caddy.Controller) ([]httpserver.HandlerConfig, error) {
 			if to == "" {
 				return nil, c.ArgErr()
 			}
-
 			if rule, err = NewComplexRule(base, pattern, to, ext, matcher); err != nil {
 				return nil, err
 			}
 			rules = append(rules, rule)
 
-		// handle case of 2 arguments: "from to"
+		// the only unhandled case is 2 and above
 		default:
-			// ensure rewrite path begins with /
-			topath := strings.Join(args[1:], " ")
-			if !strings.HasPrefix(topath, "/") {
-				return nil, c.Errf("%s:%d - Syntax error: Rewrite path must begin with '/'. Provided: '%s'", c.File(), c.Line(), c.Val())
-			}
-			rule = NewSimpleRule(args[0], topath)
+			rule = NewSimpleRule(args[0], strings.Join(args[1:], " "))
 			rules = append(rules, rule)
 		}
 

caddyhttp/rewrite/setup_test.go

@@ -45,19 +45,15 @@ func TestRewriteParse(t *testing.T) {
 			SimpleRule{From: "/from", To: "/to"},
 		}},
 		{`rewrite /from /to
-		  rewrite a /b`, false, []Rule{
+		  rewrite a b`, false, []Rule{
 			SimpleRule{From: "/from", To: "/to"},
-			SimpleRule{From: "a", To: "/b"},
+			SimpleRule{From: "a", To: "b"},
 		}},
-		{`rewrite a b`, true, []Rule{}},
 		{`rewrite a`, true, []Rule{}},
 		{`rewrite`, true, []Rule{}},
-		{`rewrite a b c`, true, []Rule{
+		{`rewrite a b c`, false, []Rule{
 			SimpleRule{From: "a", To: "b c"},
 		}},
-		{`rewrite a /b c`, false, []Rule{
-			SimpleRule{From: "a", To: "/b c"},
-		}},
 	}
 
 	for i, test := range simpleTests {