Move into nested docroot

web/core/modules/file/templates/file-link.html.twig

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+{#
+/**
+ * @file
+ * Default theme implementation for a link to a file.
+ *
+ * Available variables:
+ * - attributes: The HTML attributes for the containing element.
+ * - link: A link to the file.
+ *
+ * @see template_preprocess_file_link()
+ *
+ * @ingroup themeable
+ */
+#}
+<span{{ attributes }}>{{ link }}</span>

web/core/modules/file/templates/file-managed-file.html.twig

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+{#
+/**
+ * @file
+ * Default theme implementation to display a file form widget.
+ *
+ * Available variables:
+ * - element: Form element for the file upload.
+ * - attributes: HTML attributes for the containing element.
+ *
+ * @see template_preprocess_file_managed_file()
+ *
+ * @ingroup themeable
+ */
+#}
+{%
+  set classes = [
+    'js-form-managed-file',
+    'form-managed-file',
+  ]
+%}
+<div{{ attributes.addClass(classes) }}>
+  {{ element }}
+</div>

web/core/modules/file/templates/file-upload-help.html.twig

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+{#
+/**
+ * @file
+ * Default theme implementation to display help text for file fields.
+ *
+ * Available variables:
+ * - descriptions: Lines of help text for uploading a file.
+ *
+ * @see template_preprocess_file_upload_help()
+ *
+ * @ingroup themeable
+ */
+#}
+{{ descriptions|safe_join('<br />') }}

web/core/modules/file/templates/file-widget-multiple.html.twig

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+{#
+/**
+ * @file
+ * Default theme implementation to display a multi file form widget.
+ *
+ * Available variables:
+ * - table: Table of previously uploaded files.
+ * - element: The form element for uploading another file.
+ *
+ * @see template_preprocess_file_widget_multiple()
+ *
+ * @ingroup themeable
+ */
+#}
+{{ table }}
+{{ element }}