From 33da0c196ab7875f3659c1f35fdfbab0973450a8 Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Mon, 29 May 2023 19:19:41 -0400
Subject: [PATCH] Restore is_string() as a Smarty modifier

- Address https://github.com/friendica/friendica/issues/13157#issuecomment-1567336694
---
 src/Render/FriendicaSmarty.php                      | 4 ++++
 view/templates/settings/addons/panel.tpl            | 2 +-
 view/theme/frio/templates/settings/addons/panel.tpl | 2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/Render/FriendicaSmarty.php b/src/Render/FriendicaSmarty.php
index 2ace5688a3..1df1ffe4a8 100644
--- a/src/Render/FriendicaSmarty.php
+++ b/src/Render/FriendicaSmarty.php
@@ -53,6 +53,10 @@ class FriendicaSmarty extends Smarty
 		$this->setConfigDir($work_dir . '/');
 		$this->setCacheDir($work_dir . '/');
 
+		$this->registerPlugin('modifier', 'is_string', function ($value) {
+			return is_string($value);
+		});
+
 		/*
 		 * Enable sub-directory splitting for reducing directory descriptor
 		 * size. The default behavior is to put all compiled/cached files into
diff --git a/view/templates/settings/addons/panel.tpl b/view/templates/settings/addons/panel.tpl
index 77c21ab7ff..f401f01231 100644
--- a/view/templates/settings/addons/panel.tpl
+++ b/view/templates/settings/addons/panel.tpl
@@ -8,7 +8,7 @@
 	{{$html nofilter}}
 {{if $submit}}
 	<div class="settings-submit-wrapper panel-footer">
-    {{if $submit}}
+    {{if $submit|is_string}}
 		<button type="submit" name="{{$addon}}-submit" class="btn btn-primary settings-submit" value="{{$submit}}">{{$submit}}</button>
     {{else}}
         {{$count = 1}}
diff --git a/view/theme/frio/templates/settings/addons/panel.tpl b/view/theme/frio/templates/settings/addons/panel.tpl
index 3fdba6e3d2..561d0fc9f3 100644
--- a/view/theme/frio/templates/settings/addons/panel.tpl
+++ b/view/theme/frio/templates/settings/addons/panel.tpl
@@ -11,7 +11,7 @@
 		</div>
 		<div class="panel-footer">
 {{if $submit}}
-    {{if $submit}}
+    {{if $submit|is_string}}
 			<button type="submit" name="{{$addon}}-submit" class="btn btn-primary settings-submit" value="{{$submit}}">{{$submit}}</button>
     {{else}}
         {{$count = 1}}