1 files changed, 9 insertions, 1 deletions

diff --git a/src/luarocks/dir.lua b/src/luarocks/dir.lua
index 5174fadc..e8cd746e 100644
--- a/src/luarocks/dir.lua
+++ b/src/luarocks/dir.lua
@@ -64,6 +64,14 @@ function split_url(url)
    return protocol, pathname
 end
 
+--- Normalize a url or local path.
+-- URLs should be in the "protocol://path" format. System independent
+-- forward slashes are used, removing trailing and double slashes
+-- @param url string: an URL or a local pathname.
+-- @return string: Normalized result.
 function normalize(name)
-   return name:gsub("\\", "/"):gsub("(.)/*$", "%1"):gsub("//", "/")
+   local protocol, pathname = split_url(name)
+   pathname = pathname:gsub("\\", "/"):gsub("(.)/*$", "%1"):gsub("//", "/")
+   if protocol ~= "file" then pathname = protocol .."://"..pathname end
+   return pathname
 end