improve shared host path handling

1 files changed, 3 insertions, 2 deletions

diff --git a/contrib/sharedhost/replacement.go b/contrib/sharedhost/replacement.go
index 9dc3a1e..cabc6b1 100644
--- a/contrib/sharedhost/replacement.go
+++ b/contrib/sharedhost/replacement.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/tls"
 	"net/url"
+	"path"
 
 	sr "tildegit.org/tjp/sliderule"
 )
@@ -20,9 +21,9 @@ import (
 func ReplaceTilde(replacement string) sr.Middleware {
 	return func(inner sr.Handler) sr.Handler {
 		return sr.HandlerFunc(func(ctx context.Context, request *sr.Request) *sr.Response {
-			if len(request.Path) > 1 && request.Path[0] == '/' && request.Path[1] == '~' {
+			if len(request.Path) > 1 && request.Path[0:2] == "/~" {
 				request = cloneRequest(request)
-				request.Path = "/" + replacement + request.Path[2:]
+				request.Path = path.Clean("/" + replacement + request.Path[2:])
 			}
 
 			return inner.Handle(ctx, request)