commit b7770bfbc904077e2adb41ff1bc590c09f424fa4
Author: Aric Stewart <aric@codeweavers.com>
Date:   Wed Jun 23 15:45:01 2010 +0900

    shlwapi: URL_FILE_USE_PATHURL flag only unescapes file urls in UrlCanonicalize
    
    Correct Japanese url corruption in Internet Explorer 6

diff --git a/dlls/shlwapi/tests/url.c b/dlls/shlwapi/tests/url.c
index c828ea9..8a8f68a 100644
--- a/dlls/shlwapi/tests/url.c
+++ b/dlls/shlwapi/tests/url.c
@@ -160,7 +160,9 @@ static const TEST_URL_CANONICALIZE TEST_CANONICALIZE[] = {
     {"A", 0, S_OK, "A", FALSE},
     {"/uri-res/N2R?urn:sha1:B3K", URL_DONT_ESCAPE_EXTRA_INFO | URL_WININET_COMPATIBILITY /*0x82000000*/, S_OK, "/uri-res/N2R?urn:sha1:B3K", FALSE} /*LimeWire online installer calls this*/,
     {"http:www.winehq.org/dir/../index.html", 0, S_OK, "http:www.winehq.org/index.html"},
-    {"http://localhost/test.html", URL_FILE_USE_PATHURL, S_OK, "http://localhost/test.html"}
+    {"http://localhost/test.html", URL_FILE_USE_PATHURL, S_OK, "http://localhost/test.html"},
+    {"http://localhost/te%20st.html", URL_FILE_USE_PATHURL, S_OK, "http://localhost/te%20st.html"},
+    {"http://www.winehq.org/%E6%A1%9C.html", URL_FILE_USE_PATHURL, S_OK, "http://www.winehq.org/%E6%A1%9C.html"}
 };
 
 /* ################ */
diff --git a/dlls/shlwapi/url.c b/dlls/shlwapi/url.c
index ad7d989..d7a36db 100644
--- a/dlls/shlwapi/url.c
+++ b/dlls/shlwapi/url.c
@@ -486,7 +486,9 @@ HRESULT WINAPI UrlCanonicalizeW(LPCWSTR pszUrl, LPWSTR pszCanonicalized,
     while ((nLen > 0) && ((lpszUrlCpy[nLen-1] <= ' ')))
         lpszUrlCpy[--nLen]=0;
 
-    if(dwFlags & (URL_UNESCAPE | URL_FILE_USE_PATHURL))
+    if((dwFlags & URL_UNESCAPE) ||
+       ((dwFlags & URL_FILE_USE_PATHURL) && nByteLen >= sizeof(wszFile)
+                && !memcmp(wszFile, pszUrl, sizeof(wszFile))))
         UrlUnescapeW(lpszUrlCpy, NULL, &nLen, URL_UNESCAPE_INPLACE);
 
     if((EscapeFlags = dwFlags & (URL_ESCAPE_UNSAFE |