Backend: Fixed emoji context merging

fe_calckey/frontend/client/src/components/MkNotePreview.vue

@@ -8,6 +8,7 @@
             <div class="body">
                 <div class="content">
                     <Mfm
+                        :customEmojis="$instance.emojis"
                         :text="preprocess(text).trim()"
                         :author="$i"
                         :i="$i"
@@ -20,7 +21,6 @@
 </template>
 
 <script lang="ts" setup>
-import {} from "vue";
 import { preprocess } from "@/scripts/preprocess";
 
 const props = defineProps<{

magnetar_sdk/src/types/emoji.rs

@@ -33,7 +33,7 @@ impl EmojiContext {
 
         self.0.extend(
             more.iter()
-                .filter(|&e| existing.contains(&e.emoji.0.shortcode))
+                .filter(|&e| !existing.contains(&e.emoji.0.shortcode))
                 .cloned(),
         );
     }