The clipboard translator is much closer to working now. Tests with BK2 went reasonably well.

speech/clipboard_translator.sh

@@ -1,18 +1,23 @@
 #!/usr/bin/env bash
 
+cleanup() {
+    sort -uo "$dictionaryFile" "$dictionaryFile"
+}
+
+trap cleanup EXIT
+
 # Clear the clipboard so you don't accidently send personal info to the translator.
-echo "" | xclip -d "${DISPLAY:-:0}" -selection clipboard
+echo "" | xclip -d "${DISPLAY:-:0}" -selection clipboard 2> /dev/null
 export dictionaryFile="${XDG_CONFIG_HOME:-$HOME/.config}/storm-games/audiogame-manager/translations.txt"
 if [[ ! -r "$dictionaryFile" ]]; then
     touch "$dictionaryFile"
 fi
-newText=""
-oldText=""
-oldTranslatedText=""
 while : ; do
-    newText="$(xclip -d "${DISPLAY:-:0}" -selection clipboard -o)"
+    newText=""
+    translatedText=""
+    newText="$(xclip -d "${DISPLAY:-:0}" -selection clipboard -o 2> /dev/null)"
     sleep 0.01
-    if [[ "$oldText" == "$newText" ]] || [[ "$newText" == "" ]]; then
+    if [[ "${#newText}" -lt 1 ]]; then
         continue
     fi
     export newText
@@ -20,15 +25,14 @@ while : ; do
         $1~originalText { print $2; exitCode = 0; exit}
         END { exit exitCode }' "$dictionaryFile")"
     if [[ "${#translatedText}" -ge 1 ]]; then
-        if [[ "${translatedText}" != "${oldTranslatedText}" ]]; then
         spd-say "$translatedText"
-        fi
-        oldTranslatedText="$translatedText"
+        echo "" | xclip -d "${DISPLAY:-:0}" -selection clipboard 2> /dev/null
         continue
     fi
     translatedText="$(trans -b -- "$newText")"
+    if [[ "${newText}" != "${translatedText}" ]]; then
         echo "${newText})==:[${translatedText}" >> "$dictionaryFile"
-    sort -uo "$dictionaryFile" "$dictionaryFile"
+    fi
     spd-say "$translatedText"
-    oldText="$newText"
+    echo "" | xclip -d "${DISPLAY:-:0}" -selection clipboard 2> /dev/null
 done