Index: trunk/packages/invirt-base/python/invirt/config.py
===================================================================
--- trunk/packages/invirt-base/python/invirt/config.py	(revision 1422)
+++ trunk/packages/invirt-base/python/invirt/config.py	(revision 1423)
@@ -8,4 +8,5 @@
 from contextlib import closing
 import yaml
+import re
 
 try:    loader = yaml.CSafeLoader
@@ -34,8 +35,24 @@
     return d1
 
+def run_parts_list(dirname):
+    """Reimplements Debian's run-parts --list.
+
+    One difference from run-parts's behavior: run-parts --list /foo/
+    will give output like /foo//bar, because Python code tends to expect this.
+
+    Matches documented behavior of run-parts in debianutils v2.28.2, dated 2007.
+    """
+    # From run-parts(8).
+    lanana_re   = re.compile('^[a-z0-9]+$')
+    lsb_re      = re.compile('^_?([a-z0-9_.]+-)+[a-z0-9]+$')
+    deb_cron_re = re.compile('^[a-z0-9][a-z0-9-]*$')
+    for name in os.listdir(dirname):
+        if lanana_re.match(name) or lsb_re.match(name) or deb_cron_re.match(name):
+            yield os.path.join(dirname, name)
+
 def list_files():
     yield src_path
-    for name in os.listdir(src_dirpath):
-        yield os.path.join(src_dirpath, name)
+    for name in run_parts_list(src_dirpath):
+        yield name
 
 def load_master():