Remove from xmpp muc filtered words using unignore command

src/freedombone-unignore

@@ -6,8 +6,8 @@
 #
 #                              Freedom in the Cloud
 #
-# Removes an ignore rule for either an email address
-# or text in the subject line
+# Removes an ignore rule for either an email address or text in the
+# subject line or from xmpp MUC filtered words
 #
 # License
 # =======
@@ -32,6 +32,7 @@ PROJECT_NAME='freedombone'
 export TEXTDOMAIN=${PROJECT_NAME}-unignore
 export TEXTDOMAINDIR="/usr/share/locale"
 
+XMPP_CONFIG=/etc/prosody/prosody.cfg.lua
 MYUSERNAME=$USER
 EMAIL_ADDRESS=
 SUBJECT_TEXT=
@@ -96,6 +97,27 @@ if [ "$ALL_TEXT" ]; then
     if grep -q "Ignore rule for words '$ALL_TEXT'" "$PM"; then
         sed -i "/# Ignore rule for words '$ALL_TEXT'/,/# End of ignore words rule/d" "$PM"
     fi
+
+    if [ -f "$XMPP_CONFIG" ]; then
+        if grep -q 'filter_words =' "$XMPP_CONFIG"; then
+            if ! grep -q 'filter_words = {}' "$XMPP_CONFIG"; then
+                curr_filter_words=$(grep 'filter_words =' "$XMPP_CONFIG")
+                if [ "$curr_filter_words" ]; then
+                    if [[ "$curr_filter_words" == *",\"${ALL_TEXT}\""* ]]; then
+                        sed -i "s|,\"${ALL_TEXT}\"||g" "$XMPP_CONFIG"
+                    else
+                        if [[ "$curr_filter_words" == *"\"${ALL_TEXT}\","* ]]; then
+                            sed -i "s|\"${ALL_TEXT}\",||g" "$XMPP_CONFIG"
+                        else
+                            if [[ "$curr_filter_words" == *" \"${ALL_TEXT}\" "* ]]; then
+                                sed -i "s| \"${ALL_TEXT}\" ||g" "$XMPP_CONFIG"
+                            fi
+                        fi
+                    fi
+                fi
+            fi
+        fi
+    fi
 fi
 
 # unignore an email address