Allow hiding "Keep formatting" in "dont_override" config

CHANGELOG.md

@@ -27,6 +27,7 @@
 - Add possibility to change ATTR_EMULATE_PREPARES via config file (#9213)
 - Use draft settings (like DSN) on "Edit as new" (#9349)
 - Use new HTML5 parser available on PHP >= 8.4
+- Allow hiding the "Keep formatting" option (via `dont_override`) when composing an email (#9704)
 - Installer: Show NOT OK if none of the database extensions is installed (#9594, #9604)
 - Mailvelope: Add a button to enable the extension for webmail domain (#9498)
 - OAuth: Add support for SMTP without authentication (#9183)

program/actions/mail/send.php

@@ -47,6 +47,11 @@ public function run($args = [])
 
         $saveonly = !empty($_GET['_saveonly']);
         $savedraft = !empty($_POST['_draft']) && !$saveonly;
+        if (in_array('keep_formatting', $rcmail->config->get('dont_override', []), true)) {
+            $keepformatting = !empty($rcmail->config->get('keep_formatting', false));
+        } else {
+            $keepformatting = !empty($_POST['_keepformatting']);
+        }
         $SENDMAIL = new rcmail_sendmail($COMPOSE, [
             'sendmail' => true,
             'saveonly' => $saveonly,
@@ -55,7 +60,7 @@ public function run($args = [])
                 call_user_func_array([$rcmail->output, 'show_message'], $args);
                 $rcmail->output->send('iframe');
             },
-            'keepformatting' => !empty($_POST['_keepformatting']),
+            'keepformatting' => $keepformatting,
         ]);
 
         // Collect input for message headers

skins/elastic/templates/compose.html

@@ -46,12 +46,14 @@ <h2 id="aria-label-composeoptions" class="voice"><roundcube:label name="arialabe
 				</div>
 			</div>
 			<roundcube:endif />
+			<roundcube:if condition="!in_array('keep_formatting', (array)config:dont_override)" />
 			<div class="form-group row form-check">
 				<label for="compose-keep-formatting" class="col-form-label col-6"><roundcube:label name="keepformatting" /></label>
 				<div class="col-6 form-check">
 					<roundcube:object name="keepFormattingCheckBox" id="compose-keep-formatting" noform="true" tabindex="2" class="form-check-input" />
 				</div>
 			</div>
+			<roundcube:endif />
 			<div class="form-group row">
 				<label for="compose-priority" class="col-form-label col-6"><roundcube:label name="priority" /></label>
 				<div class="col-6">