diff --git a/blockly_compressed.js b/blockly_compressed.js
index 48cd34200..c62d70dd0 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -1280,12 +1280,13 @@ var a=this.rectElement_||this.imageElement_;a.tooltip=this.sourceBlock_;Blockly.
 Blockly.FieldImage.prototype.setValue=function(a){null!==a&&(this.src_=a,this.imageElement_&&this.imageElement_.setAttributeNS("http://www.w3.org/1999/xlink","xlink:href",goog.isString(a)?a:""))};Blockly.FieldImage.prototype.setText=function(a){null!==a&&(this.text_=a)};Blockly.FieldImage.prototype.render_=function(){};Blockly.FieldNumber=function(a,b,c,d,e){a=String(a);Blockly.FieldNumber.superClass_.constructor.call(this,a,e);this.setConstraints(b,c,d)};goog.inherits(Blockly.FieldNumber,Blockly.FieldTextInput);Blockly.FieldNumber.prototype.setConstraints=function(a,b,c){c=parseFloat(c);this.precision_=isNaN(c)?0:c;a=parseFloat(a);this.min_=isNaN(a)?-Infinity:a;b=parseFloat(b);this.max_=isNaN(b)?Infinity:b;this.setValue(this.callValidator(this.getValue()))};
 Blockly.FieldNumber.prototype.classValidator=function(a){if(null===a)return null;a=String(a);a=a.replace(/O/ig,"0");a=a.replace(/,/g,"");a=parseFloat(a||0);if(isNaN(a))return null;this.precision_&&Number.isFinite(a)&&(a=Math.round(a/this.precision_)*this.precision_);a=goog.math.clamp(a,this.min_,this.max_);return String(a)};Blockly.Variables={};Blockly.Variables.NAME_TYPE="VARIABLE";Blockly.Variables.allUsedVariables=function(a){var b;if(a instanceof Blockly.Block)b=a.getDescendants();else if(a.getAllBlocks)b=a.getAllBlocks();else throw"Not Block or Workspace: "+a;a=Object.create(null);for(var c=0;c<b.length;c++){var d=b[c].getVars();if(d)for(var e=0;e<d.length;e++){var f=d[e];f&&(a[f.toLowerCase()]=f)}}b=[];for(var g in a)b.push(a[g]);return b};
 Blockly.Variables.allVariables=function(a){a instanceof Blockly.Block&&console.warn("Deprecated call to Blockly.Variables.allVariables with a block instead of a workspace.  You may want Blockly.Variables.allUsedVariables");return a.variableList};Blockly.Variables.renameVariable=function(a,b,c){Blockly.Events.setGroup(!0);for(var d=c.getAllBlocks(),e=0;e<d.length;e++)d[e].renameVar(a,b);Blockly.Events.setGroup(!1);c.renameVariable(a,b)};
-Blockly.Variables.flyoutCategory=function(a){a=a.variableList;a.sort(goog.string.caseInsensitiveCompare);goog.array.remove(a,Blockly.Msg.VARIABLES_DEFAULT_NAME);a.unshift(Blockly.Msg.VARIABLES_DEFAULT_NAME);var b=[],c=goog.dom.createDom("button");c.setAttribute("text","Create variable");b.push(c);if(Blockly.Blocks.variables_set){c=goog.dom.createDom("block");c.setAttribute("type","variables_set");Blockly.Blocks.math_change?c.setAttribute("gap",8):c.setAttribute("gap",24);var d=goog.dom.createDom("field",
-null,a[0]);d.setAttribute("name","VAR");c.appendChild(d);b.push(c)}if(Blockly.Blocks.math_change){c=goog.dom.createDom("block");c.setAttribute("type","math_change");Blockly.Blocks.variables_get&&c.setAttribute("gap",20);d=goog.dom.createDom("value");d.setAttribute("name","DELTA");c.appendChild(d);var e=goog.dom.createDom("shadow");e.setAttribute("type","math_number");d.appendChild(e);d=goog.dom.createDom("field",null,"1");d.setAttribute("name","NUM");e.appendChild(d);b.push(c)}for(e=0;e<a.length;e++)Blockly.Blocks.variables_get&&
-(c=goog.dom.createDom("block"),c.setAttribute("type","variables_get"),Blockly.Blocks.variables_set&&c.setAttribute("gap",8),d=goog.dom.createDom("field",null,a[e]),d.setAttribute("name","VAR"),c.appendChild(d),b.push(c));return b};
+Blockly.Variables.flyoutCategory=function(a){a=a.variableList;a.sort(goog.string.caseInsensitiveCompare);var b=[],c=goog.dom.createDom("button");c.setAttribute("text","Create variable");b.push(c);if(0<a.length){if(Blockly.Blocks.variables_set){c=goog.dom.createDom("block");c.setAttribute("type","variables_set");Blockly.Blocks.math_change?c.setAttribute("gap",8):c.setAttribute("gap",24);var d=goog.dom.createDom("field",null,a[0]);d.setAttribute("name","VAR");c.appendChild(d);b.push(c)}if(Blockly.Blocks.math_change){c=
+goog.dom.createDom("block");c.setAttribute("type","math_change");Blockly.Blocks.variables_get&&c.setAttribute("gap",20);var e=goog.dom.createDom("value");e.setAttribute("name","DELTA");c.appendChild(e);d=goog.dom.createDom("field",null,a[0]);d.setAttribute("name","VAR");c.appendChild(d);d=goog.dom.createDom("shadow");d.setAttribute("type","math_number");e.appendChild(d);e=goog.dom.createDom("field",null,"1");e.setAttribute("name","NUM");d.appendChild(e);b.push(c)}for(e=0;e<a.length;e++)Blockly.Blocks.variables_get&&
+(c=goog.dom.createDom("block"),c.setAttribute("type","variables_get"),Blockly.Blocks.variables_set&&c.setAttribute("gap",8),d=goog.dom.createDom("field",null,a[e]),d.setAttribute("name","VAR"),c.appendChild(d),b.push(c))}return b};
 Blockly.Variables.generateUniqueName=function(a){a=a.variableList;var b="";if(a.length)for(var c=1,d=0,e="ijkmnopqrstuvwxyzabcdefgh".charAt(d);!b;){for(var f=!1,g=0;g<a.length;g++)if(a[g].toLowerCase()==e){f=!0;break}f?(d++,25==d&&(d=0,c++),e="ijkmnopqrstuvwxyzabcdefgh".charAt(d),1<c&&(e+=c)):b=e}else b="i";return b};
-Blockly.Variables.getUses=function(a,b){for(var c=[],d=b.getAllBlocks(),e=0;e<d.length;e++){var f=d[e].getVars();if(f)for(var g=0;g<f.length;g++){var h=f[g];h&&Blockly.Names.equals(h,a)&&c.push(d[e])}}return c};Blockly.Variables.disposeUses=function(a,b){var c=Blockly.Variables.getUses(a,b);Blockly.Events.setGroup(!0);for(var d=0;d<c.length;d++)c[d].dispose(!0,!1);Blockly.Events.setGroup(!1)};
-Blockly.Variables["delete"]=function(a,b){var c=b.variableList.indexOf(a);-1!=c&&b.variableList.splice(c,1);Blockly.Variables.disposeUses(a,b)};Blockly.Variables.createVariable=function(a){var b=Blockly.Variables.promptName(Blockly.Msg.NEW_VARIABLE_TITLE,"");return b?(a.createVariable(b),b):null};Blockly.Variables.promptName=function(a,b){var c=window.prompt(a,b);c&&(c=c.replace(/[\s\xa0]+/g," ").replace(/^ | $/g,""),c==Blockly.Msg.RENAME_VARIABLE||c==Blockly.Msg.NEW_VARIABLE)&&(c=null);return c};Blockly.FieldVariable=function(a,b){Blockly.FieldVariable.superClass_.constructor.call(this,Blockly.FieldVariable.dropdownCreate,b);this.setValue(a||"")};goog.inherits(Blockly.FieldVariable,Blockly.FieldDropdown);Blockly.FieldVariable.prototype.init=function(){this.fieldGroup_||(Blockly.FieldVariable.superClass_.init.call(this),this.getValue()||this.setValue(Blockly.Variables.generateUniqueName(this.sourceBlock_.isInFlyout?this.sourceBlock_.workspace.targetWorkspace:this.sourceBlock_.workspace)))};
+Blockly.Variables.getUses=function(a,b){for(var c=[],d=b.getAllBlocks(),e=0;e<d.length;e++){var f=d[e].getVars();if(f)for(var g=0;g<f.length;g++){var h=f[g];h&&Blockly.Names.equals(h,a)&&c.push(d[e])}}return c};Blockly.Variables.disposeUses_=function(a){Blockly.Events.setGroup(!0);for(var b=0;b<a.length;b++)a[b].dispose(!0,!1);Blockly.Events.setGroup(!1)};
+Blockly.Variables["delete"]=function(a,b){var c=b.variableList.indexOf(a);if(-1!=c){var d=Blockly.Variables.getUses(a,b);1<d.length&&window.confirm(Blockly.Msg.DELETE_VARIABLE_CONFIRMATION.replace("%1",d.length).replace("%2",a));Blockly.Variables.disposeUses_(d);b.variableList.splice(c,1)}};Blockly.Variables.createVariable=function(a){var b=Blockly.Variables.promptName(Blockly.Msg.NEW_VARIABLE_TITLE,"");return b?(a.createVariable(b),b):null};
+Blockly.Variables.promptName=function(a,b){var c=window.prompt(a,b);c&&(c=c.replace(/[\s\xa0]+/g," ").replace(/^ | $/g,""),c==Blockly.Msg.RENAME_VARIABLE||c==Blockly.Msg.NEW_VARIABLE)&&(c=null);return c};Blockly.FieldVariable=function(a,b){Blockly.FieldVariable.superClass_.constructor.call(this,Blockly.FieldVariable.dropdownCreate,b);this.setValue(a||"")};goog.inherits(Blockly.FieldVariable,Blockly.FieldDropdown);Blockly.FieldVariable.prototype.init=function(){this.fieldGroup_||(Blockly.FieldVariable.superClass_.init.call(this),this.getValue()||this.setValue(Blockly.Variables.generateUniqueName(this.sourceBlock_.isInFlyout?this.sourceBlock_.workspace.targetWorkspace:this.sourceBlock_.workspace)))};
 Blockly.FieldVariable.prototype.getValue=function(){return this.getText()};Blockly.FieldVariable.prototype.setValue=function(a){this.sourceBlock_&&Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Change(this.sourceBlock_,"field",this.name,this.value_,a));this.value_=a;this.setText(a)};
 Blockly.FieldVariable.dropdownCreate=function(){var a=this.sourceBlock_&&this.sourceBlock_.workspace?this.sourceBlock_.workspace.variableList.slice(0):[],b=this.getText();b&&-1==a.indexOf(b)&&a.push(b);a.sort(goog.string.caseInsensitiveCompare);a.push(Blockly.Msg.RENAME_VARIABLE);a.push(Blockly.Msg.DELETE_VARIABLE.replace("%1",b));for(var b=[],c=0;c<a.length;c++)b[c]=[a[c],a[c]];return b};
 Blockly.FieldVariable.prototype.classValidator=function(a){var b=this.sourceBlock_.workspace;if(a==Blockly.Msg.RENAME_VARIABLE){var c=this.getText();Blockly.hideChaff();(a=Blockly.Variables.promptName(Blockly.Msg.RENAME_VARIABLE_TITLE.replace("%1",c),c))&&Blockly.Variables.renameVariable(c,a,b);return null}if(a==Blockly.Msg.DELETE_VARIABLE.replace("%1",this.getText()))return Blockly.Variables["delete"](this.getText(),this.sourceBlock_.workspace),null};Blockly.Generator=function(a){this.name_=a;this.FUNCTION_NAME_PLACEHOLDER_REGEXP_=new RegExp(this.FUNCTION_NAME_PLACEHOLDER_,"g")};Blockly.Generator.NAME_TYPE="generated_function";Blockly.Generator.prototype.INFINITE_LOOP_TRAP=null;Blockly.Generator.prototype.STATEMENT_PREFIX=null;Blockly.Generator.prototype.INDENT="  ";Blockly.Generator.prototype.COMMENT_WRAP=60;Blockly.Generator.prototype.ORDER_OVERRIDES=[];
diff --git a/core/block.js b/core/block.js
index 0bace4292..3e5249e73 100644
--- a/core/block.js
+++ b/core/block.js
@@ -194,6 +194,10 @@ Blockly.Block.prototype.colour_ = '#000000';
  *     all children of this block.
  */
 Blockly.Block.prototype.dispose = function(healStack) {
+  if (!this.workspace) {
+    // Already deleted.
+    return;
+  }
   // Terminate onchange event calls.
   if (this.onchangeWrapper_) {
     this.workspace.removeChangeListener(this.onchangeWrapper_);
diff --git a/core/block_svg.js b/core/block_svg.js
index 7369235d5..79659dcec 100644
--- a/core/block_svg.js
+++ b/core/block_svg.js
@@ -976,6 +976,10 @@ Blockly.BlockSvg.prototype.getSvgRoot = function() {
  * @param {boolean} animate If true, show a disposal animation and sound.
  */
 Blockly.BlockSvg.prototype.dispose = function(healStack, animate) {
+  if (!this.workspace) {
+    // The block has already been deleted.
+    return;
+  }
   Blockly.Tooltip.hide();
   Blockly.Field.startCache();
   // Save the block's workspace temporarily so we can resize the
diff --git a/core/variables.js b/core/variables.js
index 0049ed388..29f5afe47 100644
--- a/core/variables.js
+++ b/core/variables.js
@@ -117,76 +117,77 @@ Blockly.Variables.renameVariable = function(oldName, newName, workspace) {
 Blockly.Variables.flyoutCategory = function(workspace) {
   var variableList = workspace.variableList;
   variableList.sort(goog.string.caseInsensitiveCompare);
-  // In addition to the user's variables, we also want to display the default
-  // variable name at the top.  We also don't want this duplicated if the
-  // user has created a variable of the same name.
-  goog.array.remove(variableList, Blockly.Msg.VARIABLES_DEFAULT_NAME);
-  variableList.unshift(Blockly.Msg.VARIABLES_DEFAULT_NAME);
 
   var xmlList = [];
   var button = goog.dom.createDom('button');
   button.setAttribute('text', 'Create variable');
   xmlList.push(button);
 
-  if (Blockly.Blocks['variables_set']) {
-    // <block type="variables_set" gap="20">
-    //   <field name="VAR">item</field>
-    // </block>
-    var block = goog.dom.createDom('block');
-    block.setAttribute('type', 'variables_set');
-    if (Blockly.Blocks['math_change']) {
-      block.setAttribute('gap', 8);
-    } else {
-      block.setAttribute('gap', 24);
-    }
-    var field = goog.dom.createDom('field', null, variableList[0]);
-    field.setAttribute('name', 'VAR');
-    block.appendChild(field);
-    xmlList.push(block);
-  }
-  if (Blockly.Blocks['math_change']) {
-    // <block type="math_change">
-    //   <value name="DELTA">
-    //     <shadow type="math_number">
-    //       <field name="NUM">1</field>
-    //     </shadow>
-    //   </value>
-    // </block>
-    var block = goog.dom.createDom('block');
-    block.setAttribute('type', 'math_change');
-    if (Blockly.Blocks['variables_get']) {
-      block.setAttribute('gap', 20);
-    }
-    var value = goog.dom.createDom('value');
-    value.setAttribute('name', 'DELTA');
-    block.appendChild(value);
-
-    var shadowBlock = goog.dom.createDom('shadow');
-    shadowBlock.setAttribute('type', 'math_number');
-    value.appendChild(shadowBlock);
-
-    var field = goog.dom.createDom('field', null, '1');
-    field.setAttribute('name', 'NUM');
-    shadowBlock.appendChild(field);
-
-    xmlList.push(block);
-  }
-
-  for (var i = 0; i < variableList.length; i++) {
-    if (Blockly.Blocks['variables_get']) {
-      // <block type="variables_get" gap="8">
+  if (variableList.length > 0) {
+    if (Blockly.Blocks['variables_set']) {
+      // <block type="variables_set" gap="20">
       //   <field name="VAR">item</field>
       // </block>
       var block = goog.dom.createDom('block');
-      block.setAttribute('type', 'variables_get');
-      if (Blockly.Blocks['variables_set']) {
+      block.setAttribute('type', 'variables_set');
+      if (Blockly.Blocks['math_change']) {
         block.setAttribute('gap', 8);
+      } else {
+        block.setAttribute('gap', 24);
       }
-      var field = goog.dom.createDom('field', null, variableList[i]);
+      var field = goog.dom.createDom('field', null, variableList[0]);
       field.setAttribute('name', 'VAR');
       block.appendChild(field);
       xmlList.push(block);
     }
+    if (Blockly.Blocks['math_change']) {
+      // <block type="math_change">
+      //   <value name="DELTA">
+      //     <shadow type="math_number">
+      //       <field name="NUM">1</field>
+      //     </shadow>
+      //   </value>
+      // </block>
+      var block = goog.dom.createDom('block');
+      block.setAttribute('type', 'math_change');
+      if (Blockly.Blocks['variables_get']) {
+        block.setAttribute('gap', 20);
+      }
+      var value = goog.dom.createDom('value');
+      value.setAttribute('name', 'DELTA');
+      block.appendChild(value);
+
+      var field = goog.dom.createDom('field', null, variableList[0]);
+      field.setAttribute('name', 'VAR');
+      block.appendChild(field);
+
+      var shadowBlock = goog.dom.createDom('shadow');
+      shadowBlock.setAttribute('type', 'math_number');
+      value.appendChild(shadowBlock);
+
+      var numberField = goog.dom.createDom('field', null, '1');
+      numberField.setAttribute('name', 'NUM');
+      shadowBlock.appendChild(numberField);
+
+      xmlList.push(block);
+    }
+
+    for (var i = 0; i < variableList.length; i++) {
+      if (Blockly.Blocks['variables_get']) {
+        // <block type="variables_get" gap="8">
+        //   <field name="VAR">item</field>
+        // </block>
+        var block = goog.dom.createDom('block');
+        block.setAttribute('type', 'variables_get');
+        if (Blockly.Blocks['variables_set']) {
+          block.setAttribute('gap', 8);
+        }
+        var field = goog.dom.createDom('field', null, variableList[i]);
+        field.setAttribute('name', 'VAR');
+        block.appendChild(field);
+        xmlList.push(block);
+      }
+    }
   }
   return xmlList;
 };
@@ -267,11 +268,10 @@ Blockly.Variables.getUses = function(name, workspace) {
 
 /**
  * When a variable is deleted, find and dispose of all uses of it.
- * @param {string} name Name of deleted variable.
- * @param {!Blockly.Workspace} workspace The workspace to delete uses from.
+ * @param {!Array.<!Blockly.Block>} uses An array of blocks using the variable.
+ * @private
  */
-Blockly.Variables.disposeUses = function(name, workspace) {
-  var uses = Blockly.Variables.getUses(name, workspace);
+Blockly.Variables.disposeUses_ = function(uses) {
   Blockly.Events.setGroup(true);
   for (var i = 0; i < uses.length; i++) {
     uses[i].dispose(true, false);
@@ -287,10 +287,16 @@ Blockly.Variables.disposeUses = function(name, workspace) {
 Blockly.Variables.delete = function(name, workspace) {
   var variableIndex = workspace.variableList.indexOf(name);
   if (variableIndex != -1) {
+    var uses = Blockly.Variables.getUses(name, workspace);
+    if (uses.length > 1) {
+      window.confirm(
+        Blockly.Msg.DELETE_VARIABLE_CONFIRMATION.replace('%1', uses.length).
+            replace('%2', name));
+    }
+    Blockly.Variables.disposeUses_(uses);
     workspace.variableList.splice(variableIndex, 1);
   }
 
-  Blockly.Variables.disposeUses(name, workspace);
 };
 
 /**
diff --git a/msg/js/ar.js b/msg/js/ar.js
index a4e2f2cba..8061989a5 100644
--- a/msg/js/ar.js
+++ b/msg/js/ar.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "بما ان القيمة صحي
 Blockly.Msg.DELETE_ALL_BLOCKS = "حذف كل مناعات %1؟";
 Blockly.Msg.DELETE_BLOCK = "إحذف القطعة";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "إحذف قطع %1";
 Blockly.Msg.DISABLE_BLOCK = "عطّل القطعة";
 Blockly.Msg.DUPLICATE_BLOCK = "ادمج";
diff --git a/msg/js/az.js b/msg/js/az.js
index 6a8c84978..9ec581935 100644
--- a/msg/js/az.js
+++ b/msg/js/az.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Hələ ki, qiymət \"doğru\"du
 Blockly.Msg.DELETE_ALL_BLOCKS = "Bütün %1 blok silinsin?";
 Blockly.Msg.DELETE_BLOCK = "Bloku sil";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 bloku sil";
 Blockly.Msg.DISABLE_BLOCK = "Bloku söndür";
 Blockly.Msg.DUPLICATE_BLOCK = "Dublikat";
diff --git a/msg/js/ba.js b/msg/js/ba.js
index 64d0e8129..566cab6e8 100644
--- a/msg/js/ba.js
+++ b/msg/js/ba.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Мәғәнә дөрөҫ бул
 Blockly.Msg.DELETE_ALL_BLOCKS = "Бөтә %1 блоктарҙы юйырғамы?";
 Blockly.Msg.DELETE_BLOCK = "Блокты юйҙырырға";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = " %1 блокты юйҙырырға";
 Blockly.Msg.DISABLE_BLOCK = "Блокты һүндерергә";
 Blockly.Msg.DUPLICATE_BLOCK = "Күсереп алырға";
diff --git a/msg/js/bcc.js b/msg/js/bcc.js
index a7561e78a..a96e8872a 100644
--- a/msg/js/bcc.js
+++ b/msg/js/bcc.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "تا زمانی که یک مق
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "حذف بلوک";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "حذف بلوک‌های %1";
 Blockly.Msg.DISABLE_BLOCK = "غیرفعال‌سازی بلوک";
 Blockly.Msg.DUPLICATE_BLOCK = "تکراری";
diff --git a/msg/js/be-tarask.js b/msg/js/be-tarask.js
index 57ff1f824..45efae7e6 100644
--- a/msg/js/be-tarask.js
+++ b/msg/js/be-tarask.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Пакуль значэньне
 Blockly.Msg.DELETE_ALL_BLOCKS = "Выдаліць усе блёкі %1?";
 Blockly.Msg.DELETE_BLOCK = "Выдаліць блёк";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Выдаліць %1 блёкі";
 Blockly.Msg.DISABLE_BLOCK = "Адключыць блёк";
 Blockly.Msg.DUPLICATE_BLOCK = "Капіяваць";
diff --git a/msg/js/bg.js b/msg/js/bg.js
index 473c795f8..41022446d 100644
--- a/msg/js/bg.js
+++ b/msg/js/bg.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Докато стойностт
 Blockly.Msg.DELETE_ALL_BLOCKS = "Изтриване на всички 1% блокове?";
 Blockly.Msg.DELETE_BLOCK = "Изтрий блок";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Изтрий %1 блока";
 Blockly.Msg.DISABLE_BLOCK = "Деактивирай блок";
 Blockly.Msg.DUPLICATE_BLOCK = "Копирай";
diff --git a/msg/js/bn.js b/msg/js/bn.js
index 07e2989e6..859e9bc1c 100644
--- a/msg/js/bn.js
+++ b/msg/js/bn.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "While a value is true, then do
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "ব্লকটি মুছে ফেল";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 ব্লক অপসারণ কর";
 Blockly.Msg.DISABLE_BLOCK = "ব্লকটি বিকল কর";
 Blockly.Msg.DUPLICATE_BLOCK = "প্রতিলিপি";
diff --git a/msg/js/br.js b/msg/js/br.js
index ba8e5b935..a11d9ce54 100644
--- a/msg/js/br.js
+++ b/msg/js/br.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Keit ha ma vez gwir un dalvoude
 Blockly.Msg.DELETE_ALL_BLOCKS = "Diverkañ an holl vloc'hoù %1 ?";
 Blockly.Msg.DELETE_BLOCK = "Dilemel ar bloc'h";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Dilemel %1 bloc'h";
 Blockly.Msg.DISABLE_BLOCK = "Diweredekaat ar bloc'h";
 Blockly.Msg.DUPLICATE_BLOCK = "Eiladuriñ";
diff --git a/msg/js/ca.js b/msg/js/ca.js
index 2f8ab53eb..680e5cea8 100644
--- a/msg/js/ca.js
+++ b/msg/js/ca.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Mentre un valor sigui cert, lla
 Blockly.Msg.DELETE_ALL_BLOCKS = "Esborrar els %1 blocs?";
 Blockly.Msg.DELETE_BLOCK = "Esborra bloc";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Esborra %1 blocs";
 Blockly.Msg.DISABLE_BLOCK = "Desactiva bloc";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplica";
diff --git a/msg/js/cs.js b/msg/js/cs.js
index 13f1234cb..ab9acfbf4 100644
--- a/msg/js/cs.js
+++ b/msg/js/cs.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Dokud je hodnota pravdivá, pro
 Blockly.Msg.DELETE_ALL_BLOCKS = "Smazat všech %1 bloků?";
 Blockly.Msg.DELETE_BLOCK = "Smazat blok";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Smazat %1 bloků";
 Blockly.Msg.DISABLE_BLOCK = "Deaktivovat blok";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplikovat";
diff --git a/msg/js/da.js b/msg/js/da.js
index 97cbb1eb6..766749a27 100644
--- a/msg/js/da.js
+++ b/msg/js/da.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Udfør nogle kommandoer, sålæ
 Blockly.Msg.DELETE_ALL_BLOCKS = "Slet alle %1 blokke?";
 Blockly.Msg.DELETE_BLOCK = "Slet blok";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Slet %1 blokke";
 Blockly.Msg.DISABLE_BLOCK = "Deaktivér blok";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplikér";
diff --git a/msg/js/de.js b/msg/js/de.js
index 891ca9cc3..f82302114 100644
--- a/msg/js/de.js
+++ b/msg/js/de.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Führt Anweisungen aus solange
 Blockly.Msg.DELETE_ALL_BLOCKS = "Alle %1 Bausteine löschen?";
 Blockly.Msg.DELETE_BLOCK = "Baustein löschen";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Baustein %1 löschen";
 Blockly.Msg.DISABLE_BLOCK = "Baustein deaktivieren";
 Blockly.Msg.DUPLICATE_BLOCK = "Kopieren";
diff --git a/msg/js/diq.js b/msg/js/diq.js
index 9cfb4e1ca..f05f9fe57 100644
--- a/msg/js/diq.js
+++ b/msg/js/diq.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Yew erc raşto se yu beyanat b
 Blockly.Msg.DELETE_ALL_BLOCKS = "Wa %1 çengey heme besteri yè?";
 Blockly.Msg.DELETE_BLOCK = "Bloki bestere";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 çengan bestern";
 Blockly.Msg.DISABLE_BLOCK = "Çengi devre ra vec";
 Blockly.Msg.DUPLICATE_BLOCK = "Zewnc";
diff --git a/msg/js/el.js b/msg/js/el.js
index cf667b9a3..22cb6cc3e 100644
--- a/msg/js/el.js
+++ b/msg/js/el.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Ενόσω μια τιμή εί
 Blockly.Msg.DELETE_ALL_BLOCKS = "Να διαγραφούν και τα %1 μπλοκ?";
 Blockly.Msg.DELETE_BLOCK = "Διέγραψε Το Μπλοκ";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Διέγραψε %1 Μπλοκ";
 Blockly.Msg.DISABLE_BLOCK = "Απενεργοποίησε Το Μπλοκ";
 Blockly.Msg.DUPLICATE_BLOCK = "Διπλότυπο";
diff --git a/msg/js/en.js b/msg/js/en.js
index 45ea85f47..6992de163 100644
--- a/msg/js/en.js
+++ b/msg/js/en.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "While a value is true, then do
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";
 Blockly.Msg.DELETE_BLOCK = "Delete Block";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";
 Blockly.Msg.DELETE_X_BLOCKS = "Delete %1 Blocks";
 Blockly.Msg.DISABLE_BLOCK = "Disable Block";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicate";
diff --git a/msg/js/es.js b/msg/js/es.js
index 6f7bf02b4..8130aa31c 100644
--- a/msg/js/es.js
+++ b/msg/js/es.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Mientras un valor sea verdadero
 Blockly.Msg.DELETE_ALL_BLOCKS = "¿Eliminar todos los %1 bloques?";
 Blockly.Msg.DELETE_BLOCK = "Eliminar bloque";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Eliminar %1 bloques";
 Blockly.Msg.DISABLE_BLOCK = "Desactivar bloque";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicar";
diff --git a/msg/js/fa.js b/msg/js/fa.js
index d92b591ed..66cee7aa9 100644
--- a/msg/js/fa.js
+++ b/msg/js/fa.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "تا زمانی که یک مق
 Blockly.Msg.DELETE_ALL_BLOCKS = "حذف همهٔ بلاک‌های %1؟";
 Blockly.Msg.DELETE_BLOCK = "حذف بلوک";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "حذف بلوک‌های %1";
 Blockly.Msg.DISABLE_BLOCK = "غیرفعال‌سازی بلوک";
 Blockly.Msg.DUPLICATE_BLOCK = "تکراری";
diff --git a/msg/js/fi.js b/msg/js/fi.js
index 2d52f1d08..79e6e70a5 100644
--- a/msg/js/fi.js
+++ b/msg/js/fi.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Niin kauan kuin arvo on tosi, s
 Blockly.Msg.DELETE_ALL_BLOCKS = "Poistetaanko kaikki %1 lohkoa?";
 Blockly.Msg.DELETE_BLOCK = "Poista lohko";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Poista %1 lohkoa";
 Blockly.Msg.DISABLE_BLOCK = "Passivoi lohko";
 Blockly.Msg.DUPLICATE_BLOCK = "Kopioi";
diff --git a/msg/js/fr.js b/msg/js/fr.js
index d888b1c2d..2adf5f990 100644
--- a/msg/js/fr.js
+++ b/msg/js/fr.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Tant qu’une valeur est vraie,
 Blockly.Msg.DELETE_ALL_BLOCKS = "Supprimer ces %1 blocs ?";
 Blockly.Msg.DELETE_BLOCK = "Supprimer le bloc";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Supprimer %1 blocs";
 Blockly.Msg.DISABLE_BLOCK = "Désactiver le bloc";
 Blockly.Msg.DUPLICATE_BLOCK = "Dupliquer";
diff --git a/msg/js/he.js b/msg/js/he.js
index 11a05fda1..6d5a9be08 100644
--- a/msg/js/he.js
+++ b/msg/js/he.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "כל עוד הערך הוא א
 Blockly.Msg.DELETE_ALL_BLOCKS = "האם למחוק את כל %1 קטעי הקוד?";
 Blockly.Msg.DELETE_BLOCK = "מחק קטע קוד";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "מחק %1 קטעי קוד";
 Blockly.Msg.DISABLE_BLOCK = "נטרל קטע קוד";
 Blockly.Msg.DUPLICATE_BLOCK = "שכפל";
diff --git a/msg/js/hi.js b/msg/js/hi.js
index 718d2b2be..72318f0a5 100644
--- a/msg/js/hi.js
+++ b/msg/js/hi.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "जब तक मान ट्
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "ब्लॉक हटाएँ";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 ब्लॉक हटाएँ";
 Blockly.Msg.DISABLE_BLOCK = "ब्लॉक को अक्षम करें";
 Blockly.Msg.DUPLICATE_BLOCK = "कॉपी करें";
diff --git a/msg/js/hrx.js b/msg/js/hrx.js
index e62b75db5..7c699e268 100644
--- a/msg/js/hrx.js
+++ b/msg/js/hrx.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Füahr die Oonweisung solang au
 Blockly.Msg.DELETE_ALL_BLOCKS = "All %1 Bausten lösche?";
 Blockly.Msg.DELETE_BLOCK = "Block lösche";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Block %1 lösche";
 Blockly.Msg.DISABLE_BLOCK = "Block deaktivieren";
 Blockly.Msg.DUPLICATE_BLOCK = "Kopieren";
diff --git a/msg/js/hu.js b/msg/js/hu.js
index 7d15622db..b4d746665 100644
--- a/msg/js/hu.js
+++ b/msg/js/hu.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Amíg a feltétel igaz, végreh
 Blockly.Msg.DELETE_ALL_BLOCKS = "Az összes %1 blokk törlése?";
 Blockly.Msg.DELETE_BLOCK = "Blokk törlése";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 blokk törlése";
 Blockly.Msg.DISABLE_BLOCK = "Blokk letiltása";
 Blockly.Msg.DUPLICATE_BLOCK = "Másolat";
diff --git a/msg/js/ia.js b/msg/js/ia.js
index fb5e3f8a8..c7228c556 100644
--- a/msg/js/ia.js
+++ b/msg/js/ia.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Durante que un valor es ver, ex
 Blockly.Msg.DELETE_ALL_BLOCKS = "Deler tote le %1 blocos?";
 Blockly.Msg.DELETE_BLOCK = "Deler bloco";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Deler %1 blocos";
 Blockly.Msg.DISABLE_BLOCK = "Disactivar bloco";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicar";
diff --git a/msg/js/id.js b/msg/js/id.js
index 3eb263bc5..b87017860 100644
--- a/msg/js/id.js
+++ b/msg/js/id.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Selagi nilainya benar, maka lak
 Blockly.Msg.DELETE_ALL_BLOCKS = "Hapus semua %1 blok?";
 Blockly.Msg.DELETE_BLOCK = "Hapus Blok";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Hapus %1 Blok";
 Blockly.Msg.DISABLE_BLOCK = "Nonaktifkan Blok";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplikat";
diff --git a/msg/js/is.js b/msg/js/is.js
index af05a6976..e52abf12a 100644
--- a/msg/js/is.js
+++ b/msg/js/is.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Endurtaka eitthvað á meðan g
 Blockly.Msg.DELETE_ALL_BLOCKS = "Eyða öllum %1 kubbunum?";
 Blockly.Msg.DELETE_BLOCK = "Eyða kubbi";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Eyða %1 kubbum";
 Blockly.Msg.DISABLE_BLOCK = "Óvirkja kubb";
 Blockly.Msg.DUPLICATE_BLOCK = "Afrita";
diff --git a/msg/js/it.js b/msg/js/it.js
index 9cd768eb9..aa411c270 100644
--- a/msg/js/it.js
+++ b/msg/js/it.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Finché un valore è vero, eseg
 Blockly.Msg.DELETE_ALL_BLOCKS = "Cancellare tutti i %1 blocchi?";
 Blockly.Msg.DELETE_BLOCK = "Cancella blocco";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Cancella %1 blocchi";
 Blockly.Msg.DISABLE_BLOCK = "Disattiva blocco";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplica";
diff --git a/msg/js/ja.js b/msg/js/ja.js
index 94d9134ed..d3d022284 100644
--- a/msg/js/ja.js
+++ b/msg/js/ja.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "値は true のあいだ、い
 Blockly.Msg.DELETE_ALL_BLOCKS = "%1件のすべてのブロックを消しますか？";
 Blockly.Msg.DELETE_BLOCK = "ブロックを消す";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 個のブロックを消す";
 Blockly.Msg.DISABLE_BLOCK = "ブロックを無効にします。";
 Blockly.Msg.DUPLICATE_BLOCK = "複製";
diff --git a/msg/js/ko.js b/msg/js/ko.js
index 761f47340..4eac804b5 100644
--- a/msg/js/ko.js
+++ b/msg/js/ko.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "값이 참일 때, 몇 가지 
 Blockly.Msg.DELETE_ALL_BLOCKS = "모든 블록 %1개를 삭제하겠습니까?";
 Blockly.Msg.DELETE_BLOCK = "블록 삭제";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "블록 %1 삭제";
 Blockly.Msg.DISABLE_BLOCK = "블록 비활성화";
 Blockly.Msg.DUPLICATE_BLOCK = "중복됨";
diff --git a/msg/js/lb.js b/msg/js/lb.js
index ed9a6782e..44ab82193 100644
--- a/msg/js/lb.js
+++ b/msg/js/lb.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Féiert d'Uweisungen aus, soula
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "Block läschen";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 Bléck läschen";
 Blockly.Msg.DISABLE_BLOCK = "Block desaktivéieren";
 Blockly.Msg.DUPLICATE_BLOCK = "Eng Kopie maachen";
diff --git a/msg/js/lki.js b/msg/js/lki.js
index 9a8efdd62..25a5e0437 100644
--- a/msg/js/lki.js
+++ b/msg/js/lki.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "تا زمانی که یک مق
 Blockly.Msg.DELETE_ALL_BLOCKS = "حةذف کؤل %1 بلاکةل?";
 Blockly.Msg.DELETE_BLOCK = "پاک کردن بلاک";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "حةذف %1 بلاکةل";
 Blockly.Msg.DISABLE_BLOCK = "إ کار کةتن(غیرفعال‌سازی) بلاک";
 Blockly.Msg.DUPLICATE_BLOCK = "کؤپی کردن";
diff --git a/msg/js/lrc.js b/msg/js/lrc.js
index 48885e52d..e493291d4 100644
--- a/msg/js/lrc.js
+++ b/msg/js/lrc.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "While a value is true, then do
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "پاکسا کردن برشت";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "پاکسا کردن%1 د برشتیا";
 Blockly.Msg.DISABLE_BLOCK = "ناکشتگر کردن برشت";
 Blockly.Msg.DUPLICATE_BLOCK = "کپی کردن";
diff --git a/msg/js/lt.js b/msg/js/lt.js
index 526d85d5b..b34907aea 100644
--- a/msg/js/lt.js
+++ b/msg/js/lt.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Kartoja veiksmus, kol sąlyga t
 Blockly.Msg.DELETE_ALL_BLOCKS = "Ištrinti visus %1 blokus?";
 Blockly.Msg.DELETE_BLOCK = "Ištrinti bloką";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Ištrinti %1 blokus";
 Blockly.Msg.DISABLE_BLOCK = "Išjungti bloką";
 Blockly.Msg.DUPLICATE_BLOCK = "Kopijuoti";
diff --git a/msg/js/mk.js b/msg/js/mk.js
index d70a9a720..451d7ce9b 100644
--- a/msg/js/mk.js
+++ b/msg/js/mk.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Додека вредноста
 Blockly.Msg.DELETE_ALL_BLOCKS = "Да ги избришам сите %1 блокчиња?";
 Blockly.Msg.DELETE_BLOCK = "Избриши блок";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Избриши %1 блока";
 Blockly.Msg.DISABLE_BLOCK = "Исклучи блок";
 Blockly.Msg.DUPLICATE_BLOCK = "Ископирај";
diff --git a/msg/js/ms.js b/msg/js/ms.js
index a0bbac9bf..08a53b571 100644
--- a/msg/js/ms.js
+++ b/msg/js/ms.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Lakukan beberapa perintah apabi
 Blockly.Msg.DELETE_ALL_BLOCKS = "Hapuskan kesemua %1 blok?";
 Blockly.Msg.DELETE_BLOCK = "Hapuskan Blok";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Hapuskan %1 Blok";
 Blockly.Msg.DISABLE_BLOCK = "Matikan Blok";
 Blockly.Msg.DUPLICATE_BLOCK = "Pendua";
diff --git a/msg/js/nb.js b/msg/js/nb.js
index e757c47d9..4621507a4 100644
--- a/msg/js/nb.js
+++ b/msg/js/nb.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Så lenge et utsagn stemmer, ut
 Blockly.Msg.DELETE_ALL_BLOCKS = "Slett alle %1 blokker?";
 Blockly.Msg.DELETE_BLOCK = "Slett blokk";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Slett %1 blokker";
 Blockly.Msg.DISABLE_BLOCK = "Deaktiver blokk";
 Blockly.Msg.DUPLICATE_BLOCK = "duplikat";
diff --git a/msg/js/nl.js b/msg/js/nl.js
index 0aab06a32..8e6386b29 100644
--- a/msg/js/nl.js
+++ b/msg/js/nl.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Terwijl een waarde waar is de v
 Blockly.Msg.DELETE_ALL_BLOCKS = "Alle %1 blokken verwijderen?";
 Blockly.Msg.DELETE_BLOCK = "Blok verwijderen";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 blokken verwijderen";
 Blockly.Msg.DISABLE_BLOCK = "Blok uitschakelen";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicaat";
diff --git a/msg/js/oc.js b/msg/js/oc.js
index 1984c448c..eac7c87c1 100644
--- a/msg/js/oc.js
+++ b/msg/js/oc.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "While a value is true, then do
 Blockly.Msg.DELETE_ALL_BLOCKS = "Suprimir totes los %1 blòts ?";
 Blockly.Msg.DELETE_BLOCK = "Suprimir lo blòt";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Suprimir %1 blòts";
 Blockly.Msg.DISABLE_BLOCK = "Desactivar lo blòt";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicar";
diff --git a/msg/js/pl.js b/msg/js/pl.js
index 7f2fb6896..6aff6665f 100644
--- a/msg/js/pl.js
+++ b/msg/js/pl.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Gdy wartość jest prawdziwa, w
 Blockly.Msg.DELETE_ALL_BLOCKS = "Usunąć wszystkie %1 bloki(ów)?";
 Blockly.Msg.DELETE_BLOCK = "Usuń blok";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Usuń %1 bloki(ów)";
 Blockly.Msg.DISABLE_BLOCK = "Wyłącz blok";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplikuj";
diff --git a/msg/js/pms.js b/msg/js/pms.js
index 9d8d9f757..93076e0b7 100644
--- a/msg/js/pms.js
+++ b/msg/js/pms.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Cand un valor a l'é ver, esegu
 Blockly.Msg.DELETE_ALL_BLOCKS = "Scancelé tuti ij %1 blòch?";
 Blockly.Msg.DELETE_BLOCK = "Scancelé ël blòch";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Scancelé %1 blòch";
 Blockly.Msg.DISABLE_BLOCK = "Disativé ël blòch";
 Blockly.Msg.DUPLICATE_BLOCK = "Dupliché";
diff --git a/msg/js/pt-br.js b/msg/js/pt-br.js
index cb3b599d5..9d5e5f9cf 100644
--- a/msg/js/pt-br.js
+++ b/msg/js/pt-br.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Enquanto um valor for verdadeir
 Blockly.Msg.DELETE_ALL_BLOCKS = "Apagar todos os %1 blocos?";
 Blockly.Msg.DELETE_BLOCK = "Remover bloco";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Remover %1 blocos";
 Blockly.Msg.DISABLE_BLOCK = "Desabilitar bloco";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicar";
diff --git a/msg/js/pt.js b/msg/js/pt.js
index b23a89a60..dded64e53 100644
--- a/msg/js/pt.js
+++ b/msg/js/pt.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Enquanto um valor for verdadeir
 Blockly.Msg.DELETE_ALL_BLOCKS = "Apagar todos os %1 blocos?";
 Blockly.Msg.DELETE_BLOCK = "Remover Bloco";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Remover %1 Blocos";
 Blockly.Msg.DISABLE_BLOCK = "Desabilitar Bloco";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicar";
diff --git a/msg/js/ro.js b/msg/js/ro.js
index 30c06aaac..ddd19141c 100644
--- a/msg/js/ro.js
+++ b/msg/js/ro.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "În timp ce o valoare este adev
 Blockly.Msg.DELETE_ALL_BLOCKS = "Ștergi toate cele %1 (de) blocuri?";
 Blockly.Msg.DELETE_BLOCK = "Șterge Bloc";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Ștergeți %1 Blocuri";
 Blockly.Msg.DISABLE_BLOCK = "Dezactivaţi bloc";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicati";
diff --git a/msg/js/ru.js b/msg/js/ru.js
index 82d7959dd..22d4f180a 100644
--- a/msg/js/ru.js
+++ b/msg/js/ru.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Пока значение ис
 Blockly.Msg.DELETE_ALL_BLOCKS = "Удалить все блоки (%1)?";
 Blockly.Msg.DELETE_BLOCK = "Удалить блок";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Удалить %1 блоков";
 Blockly.Msg.DISABLE_BLOCK = "Отключить блок";
 Blockly.Msg.DUPLICATE_BLOCK = "Скопировать";
diff --git a/msg/js/sc.js b/msg/js/sc.js
index 72d1f2860..3147cd517 100644
--- a/msg/js/sc.js
+++ b/msg/js/sc.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Interis su valori est berus, ta
 Blockly.Msg.DELETE_ALL_BLOCKS = "Scancellu su %1 de is brocus?";
 Blockly.Msg.DELETE_BLOCK = "Fùlia Blocu";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Fulia %1 Blocus";
 Blockly.Msg.DISABLE_BLOCK = "Disabìlita Blocu";
 Blockly.Msg.DUPLICATE_BLOCK = "Dùplica";
diff --git a/msg/js/sd.js b/msg/js/sd.js
index 5e022853f..9bb3e3544 100644
--- a/msg/js/sd.js
+++ b/msg/js/sd.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "While a value is true, then do
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "بلاڪ ڊاهيو";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "1٪ بلاڪ ڊاهيو";
 Blockly.Msg.DISABLE_BLOCK = "بلاڪ کي غيرفعال بڻايو";
 Blockly.Msg.DUPLICATE_BLOCK = "نقل";
diff --git a/msg/js/shn.js b/msg/js/shn.js
index f06eca289..73001ceec 100644
--- a/msg/js/shn.js
+++ b/msg/js/shn.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "ပေႃးဝႃႈ ၵႃႈ
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "မွတ်ႇပလွၵ်ႉ";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "မွတ်ႇပလွၵ်ႉ %1";
 Blockly.Msg.DISABLE_BLOCK = "ဢမ်ႇၸၢင်ႈပလွၵ်ႉ";
 Blockly.Msg.DUPLICATE_BLOCK = "ထုတ်ႇ";
diff --git a/msg/js/sk.js b/msg/js/sk.js
index 25fad22b5..e41f694d3 100644
--- a/msg/js/sk.js
+++ b/msg/js/sk.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Kým je hodnota pravdivá, vyko
 Blockly.Msg.DELETE_ALL_BLOCKS = "Zmazať všetkých %1 dielcov?";
 Blockly.Msg.DELETE_BLOCK = "Odstrániť blok";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Odstrániť %1 blokov";
 Blockly.Msg.DISABLE_BLOCK = "Vypnúť blok";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplikovať";
diff --git a/msg/js/sl.js b/msg/js/sl.js
index d58bc7412..57499fbca 100644
--- a/msg/js/sl.js
+++ b/msg/js/sl.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Kocke se izvajajo dokler je vre
 Blockly.Msg.DELETE_ALL_BLOCKS = "Izbrišem vseh %1 kock?";
 Blockly.Msg.DELETE_BLOCK = "Izbriši kocko";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Izbriši kocke";
 Blockly.Msg.DISABLE_BLOCK = "Onemogoči kocko";
 Blockly.Msg.DUPLICATE_BLOCK = "Podvoji";
diff --git a/msg/js/sq.js b/msg/js/sq.js
index 0292a4c87..e41fd08f7 100644
--- a/msg/js/sq.js
+++ b/msg/js/sq.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Përderisa një vlerë është
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "Fshij bllokun";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Fshij %1 blloqe";
 Blockly.Msg.DISABLE_BLOCK = "Çaktivizo bllokun";
 Blockly.Msg.DUPLICATE_BLOCK = "Kopjo";
diff --git a/msg/js/sr.js b/msg/js/sr.js
index 2bf9089a6..e8a397139 100644
--- a/msg/js/sr.js
+++ b/msg/js/sr.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Док је вредност т
 Blockly.Msg.DELETE_ALL_BLOCKS = "Обрисати %1 блокова?";
 Blockly.Msg.DELETE_BLOCK = "Обриши блок";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Обриши %1 блокова";
 Blockly.Msg.DISABLE_BLOCK = "Онемогући блок";
 Blockly.Msg.DUPLICATE_BLOCK = "Дуплирај";
diff --git a/msg/js/sv.js b/msg/js/sv.js
index 9f1a71eea..12872d7a8 100644
--- a/msg/js/sv.js
+++ b/msg/js/sv.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Medan ett värde är sant, utf
 Blockly.Msg.DELETE_ALL_BLOCKS = "Radera alla %1 block?";
 Blockly.Msg.DELETE_BLOCK = "Radera block";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Radera %1 block";
 Blockly.Msg.DISABLE_BLOCK = "Inaktivera block";
 Blockly.Msg.DUPLICATE_BLOCK = "Duplicera";
diff --git a/msg/js/ta.js b/msg/js/ta.js
index fdcbb7276..47ca13e24 100644
--- a/msg/js/ta.js
+++ b/msg/js/ta.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "மாறி உண்மை 
 Blockly.Msg.DELETE_ALL_BLOCKS = "அனைத்து %1 நிரல் துண்டுகளையும் அழிக்கவா??";
 Blockly.Msg.DELETE_BLOCK = "உறுப்பை நீக்கு";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 உறுப்பை நீக்கு";
 Blockly.Msg.DISABLE_BLOCK = "உறுப்பை இயங்காது செய்";
 Blockly.Msg.DUPLICATE_BLOCK = "மறுநகல்";
diff --git a/msg/js/tcy.js b/msg/js/tcy.js
index 860275596..3f43b01b0 100644
--- a/msg/js/tcy.js
+++ b/msg/js/tcy.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "ಈ ತಿರ್ತ್‌ದ 
 Blockly.Msg.DELETE_ALL_BLOCKS = "ಮಾತ %1 ನಿರ್ಬಂದೊಲೆನ್ ದೆತ್ತ್ ಪಾಡ್ಲೆ ?";
 Blockly.Msg.DELETE_BLOCK = "ಮಾಜಯರ ತಡೆಯಾತ್ಂಡ್";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "ಮಾಜಯರ ಶೇಕಡಾ ೧ ತಡೆಯಾತ್ಂಡ್";
 Blockly.Msg.DISABLE_BLOCK = "ನಿಷ್ಕ್ರಿಯಗೊಳಿಸಾದ್ ತಡೆಪತ್ತುನೆ";
 Blockly.Msg.DUPLICATE_BLOCK = "ನಕಲ್";
diff --git a/msg/js/th.js b/msg/js/th.js
index 149a6a48a..4cac4e6c2 100644
--- a/msg/js/th.js
+++ b/msg/js/th.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "ตราบเท่าที
 Blockly.Msg.DELETE_ALL_BLOCKS = "ต้องการลบบล็อกทั้ง %1 บล็อกหรือไม่";
 Blockly.Msg.DELETE_BLOCK = "ลบบล็อก";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "ลบ %1 บล็อก";
 Blockly.Msg.DISABLE_BLOCK = "ปิดใช้งานบล็อก";
 Blockly.Msg.DUPLICATE_BLOCK = "ทำซ้ำ";
diff --git a/msg/js/tl.js b/msg/js/tl.js
index 19f2ea8bb..a16f4b081 100644
--- a/msg/js/tl.js
+++ b/msg/js/tl.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Habang ang value ay true, gagaw
 Blockly.Msg.DELETE_ALL_BLOCKS = "Delete all %1 blocks?";  // untranslated
 Blockly.Msg.DELETE_BLOCK = "burahin ang bloke";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "burahin %1 ng bloke";
 Blockly.Msg.DISABLE_BLOCK = "Ipangwalang bisa ang Block";
 Blockly.Msg.DUPLICATE_BLOCK = "Kaparehas";
diff --git a/msg/js/tlh.js b/msg/js/tlh.js
index 76b4720b5..55d85528b 100644
--- a/msg/js/tlh.js
+++ b/msg/js/tlh.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "While a value is true, then do
 Blockly.Msg.DELETE_ALL_BLOCKS = "Hoch %1 ngoghmey Qaw'?";
 Blockly.Msg.DELETE_BLOCK = "ngogh Qaw'";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 ngoghmey Qaw'";
 Blockly.Msg.DISABLE_BLOCK = "ngogh Qotlh";
 Blockly.Msg.DUPLICATE_BLOCK = "velqa' chenmoH";
diff --git a/msg/js/tr.js b/msg/js/tr.js
index 74b85f10d..c716c75fb 100644
--- a/msg/js/tr.js
+++ b/msg/js/tr.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Bir değer doğru olduğunda ba
 Blockly.Msg.DELETE_ALL_BLOCKS = "Tüm %1 blok silinsin mi?";
 Blockly.Msg.DELETE_BLOCK = "Bloğu Sil";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "%1 Blokları Sil";
 Blockly.Msg.DISABLE_BLOCK = "Bloğu Devre Dışı Bırak";
 Blockly.Msg.DUPLICATE_BLOCK = "Çoğalt";
diff --git a/msg/js/uk.js b/msg/js/uk.js
index e6ef37aa9..2c369999e 100644
--- a/msg/js/uk.js
+++ b/msg/js/uk.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Поки значення іс
 Blockly.Msg.DELETE_ALL_BLOCKS = "Вилучити всі блоки %1?";
 Blockly.Msg.DELETE_BLOCK = "Видалити блок";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Видалити %1 блоків";
 Blockly.Msg.DISABLE_BLOCK = "Вимкнути блок";
 Blockly.Msg.DUPLICATE_BLOCK = "Дублювати";
diff --git a/msg/js/vi.js b/msg/js/vi.js
index 9241a0832..336b2b211 100644
--- a/msg/js/vi.js
+++ b/msg/js/vi.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "Miễn là điều kiện còn
 Blockly.Msg.DELETE_ALL_BLOCKS = "Xóa hết %1 mảnh?";
 Blockly.Msg.DELETE_BLOCK = "Xóa Mảnh Này";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "Xóa %1 Mảnh";
 Blockly.Msg.DISABLE_BLOCK = "Ngưng Tác Dụng";
 Blockly.Msg.DUPLICATE_BLOCK = "Tạo Bản Sao";
diff --git a/msg/js/zh-hans.js b/msg/js/zh-hans.js
index dc84989a6..d03963076 100644
--- a/msg/js/zh-hans.js
+++ b/msg/js/zh-hans.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "只要值为真，执行一些
 Blockly.Msg.DELETE_ALL_BLOCKS = "删除所有%1块吗？";
 Blockly.Msg.DELETE_BLOCK = "删除块";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "删除 %1 块";
 Blockly.Msg.DISABLE_BLOCK = "禁用块";
 Blockly.Msg.DUPLICATE_BLOCK = "复制";
diff --git a/msg/js/zh-hant.js b/msg/js/zh-hant.js
index 268d7e4ae..61f377d72 100644
--- a/msg/js/zh-hant.js
+++ b/msg/js/zh-hant.js
@@ -63,6 +63,7 @@ Blockly.Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE = "當值為真時，執行一些
 Blockly.Msg.DELETE_ALL_BLOCKS = "刪除共 %1 塊積木？";
 Blockly.Msg.DELETE_BLOCK = "刪除積木";
 Blockly.Msg.DELETE_VARIABLE = "Delete the '%1' variable";  // untranslated
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = "Delete %1 uses of the %2 variable?";  // untranslated
 Blockly.Msg.DELETE_X_BLOCKS = "刪除 %1 塊積木";
 Blockly.Msg.DISABLE_BLOCK = "停用積木";
 Blockly.Msg.DUPLICATE_BLOCK = "複製";
diff --git a/msg/json/en.json b/msg/json/en.json
index 5e46ec3b7..7e5f4ef74 100644
--- a/msg/json/en.json
+++ b/msg/json/en.json
@@ -1,7 +1,7 @@
 {
 	"@metadata": {
 		"author": "Ellen Spertus <ellen.spertus@gmail.com>",
-		"lastupdated": "2016-08-08 16:58:55.342181",
+		"lastupdated": "2016-08-09 17:07:03.957507",
 		"locale": "en",
 		"messagedocumentation" : "qqq"
 	},
@@ -31,6 +31,7 @@
 	"NEW_VARIABLE_TITLE": "New variable name:",
 	"RENAME_VARIABLE": "Rename variable...",
 	"RENAME_VARIABLE_TITLE": "Rename all '%1' variables to:",
+	"DELETE_VARIABLE_CONFIRMATION": "Delete %1 uses of the %2 variable?",
 	"COLOUR_PICKER_HELPURL": "https://en.wikipedia.org/wiki/Color",
 	"COLOUR_PICKER_TOOLTIP": "Choose a colour from the palette.",
 	"COLOUR_RANDOM_HELPURL": "http://randomcolour.com",
diff --git a/msg/json/qqq.json b/msg/json/qqq.json
index 763fa60cd..aaf24b357 100644
--- a/msg/json/qqq.json
+++ b/msg/json/qqq.json
@@ -25,6 +25,7 @@
 	"NEW_VARIABLE_TITLE": "prompt - Prompts the user to enter the name for a new variable.  See [https://github.com/google/blockly/wiki/Variables#dropdown-menu https://github.com/google/blockly/wiki/Variables#dropdown-menu].",
 	"RENAME_VARIABLE": "dropdown choice - When the user clicks on a variable block, this is one of the dropdown menu choices.  It is used to rename the current variable.  See [https://github.com/google/blockly/wiki/Variables#dropdown-menu https://github.com/google/blockly/wiki/Variables#dropdown-menu].",
 	"RENAME_VARIABLE_TITLE": "prompt - Prompts the user to enter the new name for the selected variable.  See [https://github.com/google/blockly/wiki/Variables#dropdown-menu https://github.com/google/blockly/wiki/Variables#dropdown-menu].\n\nParameters:\n* %1 - the name of the variable to be renamed.",
+	"DELETE_VARIABLE_CONFIRMATION": "confirm -  Ask the user to confirm their deletion of multiple uses of a variable.",
 	"COLOUR_PICKER_HELPURL": "url - Information about colour.",
 	"COLOUR_PICKER_TOOLTIP": "tooltip - See [https://github.com/google/blockly/wiki/Colour#picking-a-colour-from-a-palette https://github.com/google/blockly/wiki/Colour#picking-a-colour-from-a-palette].",
 	"COLOUR_RANDOM_HELPURL": "url - A link that displays a random colour each time you visit it.",
diff --git a/msg/messages.js b/msg/messages.js
index 2649a5c39..36535c70e 100644
--- a/msg/messages.js
+++ b/msg/messages.js
@@ -106,6 +106,8 @@ Blockly.Msg.NEW_VARIABLE_TITLE = 'New variable name:';
 Blockly.Msg.RENAME_VARIABLE = 'Rename variable...';
 /// prompt - Prompts the user to enter the new name for the selected variable.  See [https://github.com/google/blockly/wiki/Variables#dropdown-menu https://github.com/google/blockly/wiki/Variables#dropdown-menu].\n\nParameters:\n* %1 - the name of the variable to be renamed.
 Blockly.Msg.RENAME_VARIABLE_TITLE = 'Rename all "%1" variables to:';
+/// confirm -  Ask the user to confirm their deletion of multiple uses of a variable.
+Blockly.Msg.DELETE_VARIABLE_CONFIRMATION = 'Delete %1 uses of the %2 variable?';
 
 // Colour Blocks.
 /// url - Information about colour.