Merge branch 'subtree'

diff --combined src/be/nikiroo/fanfix/library/CacheLibrary.java
index 92e4ae7a9951ec9715dc5faa9271bae362412dbf,a3c3b5e3b7bb6f5a61962e8837158e28692feb56..a3c3b5e3b7bb6f5a61962e8837158e28692feb56
--- 1/src/be/nikiroo/fanfix/library/CacheLibrary.java
--- 2/library/CacheLibrary.java
+++ b/src/be/nikiroo/fanfix/library/CacheLibrary.java
@@@ -67,6 -67,7 +67,7 @@@ public class CacheLibrary extends Basic
                        pg = new Progress();
                }
  
+               List<MetaData> copy;
                synchronized (metasLock) {
                        // We make sure that cached metas have precedence
                        if (metasMixed == null) {
@@@ -86,10 -87,12 +87,12 @@@
                                        }
                                }
                        }
+ 
+                       copy = new ArrayList<MetaData>(metasMixed);
                }
  
                pg.done();
-               return new ArrayList<MetaData>(metasMixed);
+               return copy;
        }
  
        @Override
@@@ -404,9 -407,7 +407,7 @@@
  
                MetaData meta = lib.imprt(url, pgImprt);
                updateMetaCache(metasReal, meta);
-               synchronized (metasLock) {
-                       metasMixed = null;
-               }
+               metasMixed = null;
  
                clearFromCache(meta.getLuid());
  

diff --combined src/be/nikiroo/fanfix/supported/E621.java
index 602cd36309250e03de7291c4f46784b7171ccc93,c0125fb3f107087f170f8d2d8e6c718cb5253e87..c0125fb3f107087f170f8d2d8e6c718cb5253e87
--- 1/src/be/nikiroo/fanfix/supported/E621.java
--- 2/supported/E621.java
+++ b/src/be/nikiroo/fanfix/supported/E621.java
@@@ -292,6 -292,22 +292,22 @@@ class E621 extends BasicSupport 
                                        builder.append(" ").append(tab[i]);
                                }
                        }
+ 
+                       if (builder.length() == 0) {
+                               String url = "https://e621.net/" + getSource().getPath()
+                                               + "?page=1";
+                               Document page1 = DataUtil.load(Instance.getInstance().getCache()
+                                               .open(getSource(), this, false), "UTF-8",
+                                               url.toString());
+                               for (Element el : page1.getElementsByClass("search-tag")) {
+                                       if (el.attr("itemprop").equals("author")) {
+                                               if (builder.length() > 0) {
+                                                       builder.append(", ");
+                                               }
+                                               builder.append(el.text().trim());
+                                       }
+                               }
+                       }
                }
  
                return builder.toString();