Process nested trans directives, fixes #35449

Author: sprankhub

dev/tests/integration/testsuite/Magento/Setup/Console/Command/_files/expectedPhrases.csv

@@ -18,4 +18,7 @@
 "string with escaped ""double quotes""","string with escaped ""double quotes"""
 "string with placeholder in escaped double quotes ""%1""","string with placeholder in escaped double quotes ""%1"""
 "string that's got an unclosed single quote in it","string that's got an unclosed single quote in it"
+"Thank you for your order from %store_name.","Thank you for your order from %store_name."
+"Our hours are <span class=""no-link"">%store_hours</span>.","Our hours are <span class=""no-link"">%store_hours</span>."
+"Translation inside if directive","Translation inside if directive"
 "Test di text","Test di text"

dev/tests/integration/testsuite/Magento/Setup/Console/Command/_files/phrases/test_mail_template.html

@@ -0,0 +1,28 @@
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+
+{{template config_path="design/email/header_template"}}
+
+<table>
+    <tr class="email-intro">
+        <td>
+            <p>
+                {{trans "Thank you for your order from %store_name." store_name=$store.frontend_name}}
+            </p>
+            <p>
+                {{depend store_hours}}
+                    {{trans 'Our hours are <span class="no-link">%store_hours</span>.' store_hours=$store_hours |raw}}
+                {{/depend}}
+            </p>
+            {{if something}}
+                <p>{{trans 'Translation inside if directive'}}</p>
+            {{/if}}
+        </td>
+    </tr>
+</table>
+
+{{template config_path="design/email/footer_template"}}

setup/src/Magento/Setup/Module/I18n/Parser/Adapter/Html.php

@@ -50,6 +50,14 @@ protected function _parse()
             throw new Exception('Failed to load file from disk.');
         }
 
+        $this->extractPhrasesFromTransDirective($data);
+        $this->extractPhrases(self::REGEX_I18N_BINDING, $data, 2, 1);
+        $this->extractPhrases(self::REGEX_TRANSLATE_TAG_OR_ATTR, $data, 3, 2);
+        $this->extractPhrases(Js::REGEX_TRANSLATE_FUNCTION, $data, 3, 2);
+    }
+
+    private function extractPhrasesFromTransDirective(string $data): void
+    {
         $results = [];
         preg_match_all(Filter::CONSTRUCTION_PATTERN, $data, $results, PREG_SET_ORDER);
         for ($i = 0, $count = count($results); $i < $count; $i++) {
@@ -61,12 +69,11 @@ protected function _parse()
 
                 $quote = $directive[1];
                 $this->_addPhrase($quote . $directive[2] . $quote);
+            } elseif (in_array($results[$i][1], ['depend', 'if'], true) && isset($results[$i][3])) {
+                // make sure to process trans directives nested inside depend / if directives
+                $this->extractPhrasesFromTransDirective($results[$i][3]);
             }
         }
-
-        $this->extractPhrases(self::REGEX_I18N_BINDING, $data, 2, 1);
-        $this->extractPhrases(self::REGEX_TRANSLATE_TAG_OR_ATTR, $data, 3, 2);
-        $this->extractPhrases(Js::REGEX_TRANSLATE_FUNCTION, $data, 3, 2);
     }
 
     /**