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diff --git a/mvc/openfiles.py b/mvc/openfiles.py
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+"""openfiles.py -- open files/folders."""
+
+import logging
+import os
+import subprocess
+import sys
+
+
+# To open paths we use an OS-specific command.  The approach is from:
+# http://stackoverflow.com/questions/6631299/python-opening-a-folder-in-explorer-nautilus-mac-thingie
+
+def check_kde():
+    return os.environ.get("KDE_FULL_SESSION", None) != None
+
+def _open_path_osx(path):
+    subprocess.call(['open', '--', path])
+
+def _open_path_kde(path):
+    subprocess.call(["kfmclient", "exec", "file://" + path])
+
+def _open_path_gnome(path):
+    subprocess.call(["gnome-open", path])
+
+def _open_path_windows(path):
+    subprocess.call(['explorer', path])
+
+def _open_path(path):
+    if sys.platform == 'darwin':
+        _open_path_osx(path)
+    elif sys.platform == 'linux2':
+        if check_kde():
+            _open_path_kde(path)
+        else:
+	    _open_path_gnome(path)
+    elif sys.platform == 'win32':
+        _open_path_windows(path)
+    else:
+        logging.warn("unknown platform: %s", sys.platform)
+
+def reveal_folder(path):
+    """Show a folder in the desktop shell (finder/explorer/nautilous, etc)."""
+    logging.info("reveal_folder: %s", path)
+    if os.path.isdir(path):
+        _open_path(path)
+    else:
+        _open_path(os.path.dirname(path))