1 files changed, 2 insertions, 2 deletions

diff --git a/src/url.lua b/src/url.lua
index 52e88da..135d723 100644
--- a/src/url.lua
+++ b/src/url.lua
@@ -55,9 +55,9 @@ local segment_set = make_set {
 }
 
 local function protect_segment(s)
-        return string.gsub(s, "(%W)", function (c) 
+        return string.gsub(s, "([^A-Za-z0-9_])", function (c) 
                 if segment_set[c] then return c
-                else return escape(c) end
+                else return string.format("%%%02x", string.byte(c)) end
         end)
 end