@@ -3661,6 +3661,39 @@ describe('i18n support in the template compiler', () => {
 
       verify(input, output);
     });
+
+    it('should produce proper messages when `select` or `plural` keywords have spaces after them',
+       () => {
+         const input = `
+            <div i18n>
+              {count, select , 1 {one} other {more than one}}
+              {count, plural , =1 {one} other {more than one}}
+            </div>
+          `;
+
+         const output = String.raw`
+            var $I18N_1$;
+            if (typeof ngI18nClosureMode !== "undefined" && ngI18nClosureMode) {
+                const $MSG_EXTERNAL_199763560911211963$$APP_SPEC_TS_2$ = goog.getMsg("{VAR_SELECT , select , 1 {one} other {more than one}}");
+                $I18N_1$ = $MSG_EXTERNAL_199763560911211963$$APP_SPEC_TS_2$;
+            }
+            else {
+                $I18N_1$ = $localize \`{VAR_SELECT , select , 1 {one} other {more than one}}\`;
+            }
+            $I18N_1$ = i0.ɵɵi18nPostprocess($I18N_1$, { "VAR_SELECT": "\uFFFD0\uFFFD" });
+            var $I18N_3$;
+            if (typeof ngI18nClosureMode !== "undefined" && ngI18nClosureMode) {
+                const $MSG_EXTERNAL_3383986062053865025$$APP_SPEC_TS_4$ = goog.getMsg("{VAR_PLURAL , plural , =1 {one} other {more than one}}");
+                $I18N_3$ = $MSG_EXTERNAL_3383986062053865025$$APP_SPEC_TS_4$;
+            }
+            else {
+                $I18N_3$ = $localize \`{VAR_PLURAL , plural , =1 {one} other {more than one}}\`;
+            }
+            $I18N_3$ = i0.ɵɵi18nPostprocess($I18N_3$, { "VAR_PLURAL": "\uFFFD1\uFFFD" });
+          `;
+
+         verify(input, output);
+       });
   });
 
   describe('$localize legacy message ids', () => {
 
@@ -273,10 +273,20 @@ class HtmlAstToIvyAst implements html.Visitor {
       const value = message.placeholders[key];
       if (key.startsWith(I18N_ICU_VAR_PREFIX)) {
         const config = this.bindingParser.interpolationConfig;
+
         // ICU expression is a plain string, not wrapped into start
         // and end tags, so we wrap it before passing to binding parser
         const wrapped = `${config.start}${value}${config.end}`;
-        vars[key] = this._visitTextWithInterpolation(wrapped, expansion.sourceSpan) as t.BoundText;
+
+        // Currently when the `plural` or `select` keywords in an ICU contain trailing spaces (e.g.
+        // `{count, select , ...}`), these spaces are also included into the key names in ICU vars
+        // (e.g. "VAR_SELECT "). These trailing spaces are not desirable, since they will later be
+        // converted into `_` symbols while normalizing placeholder names, which might lead to
+        // mismatches at runtime (i.e. placeholder will not be replaced with the correct value).
+        const formattedKey = key.trim();
+
+        vars[formattedKey] =
+            this._visitTextWithInterpolation(wrapped, expansion.sourceSpan) as t.BoundText;
       } else {
         placeholders[key] = this._visitTextWithInterpolation(value, expansion.sourceSpan);
       }
 
@@ -627,6 +627,24 @@ onlyInIvy('Ivy i18n logic').describe('runtime i18n', () => {
       expect(element.textContent).toContain('ICU start --> Autre <-- ICU end');
     });
 
+    it('when `select` or `plural` keywords have spaces after them', () => {
+      loadTranslations({
+        [computeMsgId('{VAR_SELECT , select , 10 {ten} 20 {twenty} other {other}}')]:
+            '{VAR_SELECT , select , 10 {dix} 20 {vingt} other {autre}}',
+        [computeMsgId('{VAR_PLURAL , plural , =0 {zero} =1 {one} other {other}}')]:
+            '{VAR_PLURAL , plural , =0 {zéro} =1 {une} other {autre}}'
+      });
+      const fixture = initWithTemplate(AppComp, `
+        <div i18n>
+          {count, select , 10 {ten} 20 {twenty} other {other}} -
+          {count, plural , =0 {zero} =1 {one} other {other}}
+        </div>
+      `);
+
+      const element = fixture.nativeElement;
+      expect(element.textContent).toContain('autre - zéro');
+    });
+
     it('with no root node and text and DOM nodes surrounding ICU', () => {
       loadTranslations({
         [computeMsgId('{VAR_SELECT, select, 10 {Ten} 20 {Twenty} other {Other}}')]: