git-p4: improve path encoding verbose output

If a path with non-ASCII characters is detected then print the
encoding and the encoded string in verbose mode.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-p4.py

@@ -2213,16 +2213,15 @@ def streamOneP4File(self, file, contents):
             text = regexp.sub(r'$\1$', text)
             contents = [ text ]
 
-        if gitConfig("git-p4.pathEncoding"):
-            relPath = relPath.decode(gitConfig("git-p4.pathEncoding")).encode('utf8', 'replace')
-        elif self.verbose:
-            try:
-                relPath.decode('ascii')
-            except:
-                print (
-                    "Path with Non-ASCII characters detected and no path encoding defined. "
-                    "Please check the encoding: %s" % relPath
-                )
+        try:
+            relPath.decode('ascii')
+        except:
+            encoding = 'utf8'
+            if gitConfig('git-p4.pathEncoding'):
+                encoding = gitConfig('git-p4.pathEncoding')
+            relPath = relPath.decode(encoding).encode('utf8', 'replace')
+            if self.verbose:
+                print 'Path with non-ASCII characters detected. Used %s to encode: %s ' % (encoding, relPath)
 
         self.gitStream.write("M %s inline %s\n" % (git_mode, relPath))