/posts: add shift+F to unfavorite hotkey.

app/assets/javascripts/posts.js

@@ -175,19 +175,8 @@
 
       Danbooru.keydown("a", "prev_page", Danbooru.Post.nav_prev);
       Danbooru.keydown("d", "next_page", Danbooru.Post.nav_next);
-
+      Danbooru.keydown("f", "favorite", Danbooru.Post.favorite);
-      Danbooru.keydown("f", "favorite", function(e) {
+      Danbooru.keydown("shift+f", "unfavorite", Danbooru.Post.unfavorite);
-        if ($("#add-to-favorites").is(":visible")) {
-          $("#add-to-favorites").click();
-        } else {
-          if (Danbooru.meta("current-user-id") == "") {
-            Danbooru.notice("You must be logged in to favorite posts");
-          } else {
-            Danbooru.notice("You have already favorited this post");
-          }
-        }
-        e.preventDefault();
-      });
     }
   }
 
@@ -537,6 +526,24 @@
     });
   }
 
+  Danbooru.Post.favorite = function (e) {
+    if ($("#add-to-favorites").is(":visible")) {
+      $("#add-to-favorites").click();
+    } else {
+      if (Danbooru.meta("current-user-id") == "") {
+        Danbooru.notice("You must be logged in to favorite posts");
+      } else {
+        Danbooru.notice("You have already favorited this post");
+      }
+    }
+  };
+
+  Danbooru.Post.unfavorite = function (e) {
+    $.ajax("/favorites/" + Danbooru.meta("post-id") + ".js", {
+      type: "DELETE"
+    });
+  };
+
   Danbooru.Post.initialize_saved_searches = function() {
     $("#saved_search_labels").autocomplete({
       minLength: 2,

app/views/static/keyboard_shortcuts.html.erb

@@ -29,6 +29,7 @@
         <li><kbd class="key">a</kbd> Previous post</li>
         <li><kbd class="key">d</kbd> Next post</li>
         <li><kbd class="key">f</kbd> Favorite post</li>
+        <li><kbd class="key">shift</kbd>+<kbd class="key">f</kbd> Unfavorite post</li>
         <li><kbd class="key">g</kbd> Add post to favorite group</li>
         <li><kbd class="key">1</kbd>, <kbd class="key">2</kbd>, <kbd class="key">3</kbd>... Add post to favorite group #N</li>
         <li><kbd class="key">r</kbd> Go to random post</li>