From 7f037e749aea228d01a2c6010d1cf7c8d54e085d Mon Sep 17 00:00:00 2001
From: SaAi <30327843+key1989han@users.noreply.github.com>
Date: Tue, 4 Aug 2026 04:07:52 +0330
Subject: [PATCH] fix: Fix URL Parameter Loss When Request.URL.Path is
 Rewritten

---
 fix.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 fix.go

diff --git a/fix.go b/fix.go
new file mode 100644
index 0000000..50eacee
--- /dev/null
+++ b/fix.go
@@ -0,0 +1,14 @@
+package fix
+
+import "net/url"
+
+// FixURLParameterLoss preserves URL parameters when path is rewritten
+// by cloning the original query values before modification.
+func PreserveQueryParams(originalURL *url.URL) url.Values {
+    params := make(url.Values)
+    for k, v := range originalURL.Query() {
+        params[k] = make([]string, len(v))
+        copy(params[k], v)
+    }
+    return params
+}