From a06d546f5c2e853b07fde5a41b1fff102829b116 Mon Sep 17 00:00:00 2001
From: Serica <943914044@qq.com>
Date: Sun, 28 Nov 2021 09:26:17 +0800
Subject: [PATCH] prettify error message for catch-all conflict with existing
 path segment (#2934)

---
 tree.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tree.go b/tree.go
index 2f0de1a9..521d3ef3 100644
--- a/tree.go
+++ b/tree.go
@@ -349,7 +349,12 @@ func (n *node) insertChild(path string, fullPath string, handlers HandlersChain)
 		}
 
 		if len(n.path) > 0 && n.path[len(n.path)-1] == '/' {
-			panic("catch-all conflicts with existing handle for the path segment root in path '" + fullPath + "'")
+			pathSeg := strings.SplitN(n.children[0].path, "/", 2)[0]
+			panic("catch-all wildcard '" + path +
+				"' in new path '" + fullPath +
+				"' conflicts with existing path segment '" + pathSeg +
+				"' in existing prefix '" + n.path + pathSeg +
+				"'")
 		}
 
 		// currently fixed width 1 for '/'