35 static gchar*
36 dup_dirname (const gchar *dirname)
37 {
38     gchar *d_dirname = g_strdup (dirname);
39     size_t len = strlen (d_dirname);
40 
41     if (d_dirname[len] == '/')
42         d_dirname[len] = '\0';
43 
44     return d_dirname;
45 }


Lines 41 & 42: string[<len of string>] is always 0.  Should be:

41     if (d_dirname[len - 1] == '/')
42         d_dirname[len - 1] = '\0';

Otherwise, trailing '/' never gets stripped.