Merge branch 'release/5.5.0'

Indicate support for php8.4 in docs.

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: [wisskid]

.github/workflows/ci.yml

@@ -23,6 +23,7 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
+          - windows-latest
 
         php-version:
           - "7.2"
@@ -32,31 +33,14 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
+          - "8.4"
 
         compiler:
           - default
 
-        include:
-          - os: ubuntu-latest
-            php-version: "8.0"
-            compiler: jit
-          - os: ubuntu-latest
-            php-version: "8.1"
-            compiler: jit
-          - os: ubuntu-latest
-            php-version: "8.2"
-            compiler: jit
-          - os: ubuntu-latest
-            php-version: "8.3"
-            compiler: jit
-
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
-
-    - name: Override PHP ini values for JIT compiler
-      if: matrix.compiler == 'jit'
-      run: echo "PHP_INI_VALUES::assert.exception=1, zend.assertions=1, opcache.enable=1, opcache.enable_cli=1, opcache.optimization_level=-1, opcache.jit=1255, opcache.jit_buffer_size=32M" >> $GITHUB_ENV
+      uses: actions/checkout@v4
 
     - name: Install PHP with extensions
       uses: shivammathur/setup-php@v2
@@ -68,7 +52,7 @@ jobs:
 
     - name: Cache Composer packages
       id: composer-cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: vendor
         key: v5r2-${{ runner.os }}-php-${{ matrix.php-version }}-${{ hashFiles('**/composer.lock') }}
@@ -76,7 +60,7 @@ jobs:
           v5r1-${{ runner.os }}-php-${{ matrix.php-version }}-
 
     - name: Install dependencies
-      uses: php-actions/composer@v6
+      run: composer install
 
     - name: Run make
       run: make -B

CHANGELOG.md

@@ -6,15 +6,74 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [5.5.0] - 2025-05-03
+- Support trailing comma in array [#1013](https://github.com/smarty-php/smarty/issues/1013)
+
+
+## [5.4.5] - 2025-04-15
+- Fixed deprecation notice in StringEval in PHP8.4 [#1119](https://github.com/smarty-php/smarty/issues/1119)
+
+
+## [5.4.4] - 2025-04-13
+- Fix syntax error occurring when registering a function plugin that ends with the string 'close' [#1122](https://github.com/smarty-php/smarty/issues/1122)
+- Replace SMARTY_VERSION constant with $smarty.version in debug.tpl [#1073](https://github.com/smarty-php/smarty/issues/1073)
+
+
+## [5.4.3] - 2024-12-23
+- Fix PHP backtraces by qualifying/replacing `call_user_func_array` calls [#1074](https://github.com/smarty-php/smarty/issues/1074)
+
+
+## [5.4.2] - 2024-11-20
+
+
+- Support the deprecations introduced in PHP 8.4 and added tests for PHP 8.4 [#1043](https://github.com/smarty-php/smarty/pull/1043)
+
+## [5.4.1] - 2024-08-29
+
+
+- Enable (and fix) unit tests for Windows [#1046](https://github.com/smarty-php/smarty/pull/1046)
+- Fix the use of "extends:" to define the inheritance tree on Windows [#1018](https://github.com/smarty-php/smarty/issues/1018)
+
+## [5.4.0] - 2024-08-14
+- Fixing forced OpCache invalidation on every template include, which is resulting in fast raising wasted OpCache memory [#1007](https://github.com/smarty-php/smarty/issues/1007) 
+- Improvement of auto-escaping [#1030](https://github.com/smarty-php/smarty/pull/1030)
+
+
+## [5.3.1] - 2024-06-16
+- Fixed error when using section with nocache [#1034](https://github.com/smarty-php/smarty/issues/1034)
+
+
+## [5.3.0] - 2024-05-30
+- Fix warning when calling hasVariable for an undefined variable [#977](https://github.com/smarty-php/smarty/issues/977)
+- Added `$smarty->prependTemplateDir()` method [#1022](https://github.com/smarty-php/smarty/issues/1022)
+
+
+## [5.2.0] - 2024-05-28
+- Fixed a code injection vulnerability in extends-tag. This addresses CVE-2024-35226.
+- Added `$smarty->setCacheModifiedCheck()` setter for cache_modified_check
+- Added a PSR-4 loading script to allow Smarty to be used without Composer [#1017](https://github.com/smarty-php/smarty/pull/1017)
+
+
+## [5.1.0] - 2024-04-22
+- Prevent deprecation notices during compilation in PHP8.3 [#996](https://github.com/smarty-php/smarty/issues/996)
+- Fix that getTemplateVars would return an array of objects instead of the assigned variables values [#994](https://github.com/smarty-php/smarty/issues/994)
+- Fix Smarty::assign() not returning $this when called with an array as first parameter [#972](https://github.com/smarty-php/smarty/pull/972)
+- Documented support for `{if $element is in $array}` syntax [#937](https://github.com/smarty-php/smarty/issues/937)
+- Added support for `{if $element is not in $array}` syntax [#937](https://github.com/smarty-php/smarty/issues/937)
+- Using stream variables in templates now throws a deprecation notice [#933](https://github.com/smarty-php/smarty/pull/933)
+- Internal compiler classes always return a string (the internal has_code flag has been removed for simplicity) [#918](https://github.com/smarty-php/smarty/pull/918)
+- Fix invalid classnames in Runtime code for foreach [#1000](https://github.com/smarty-php/smarty/issues/1000)
+
+## [5.0.2] - 2024-03-28
+- Fix Smarty::assign() not returning $this when called with an array as first parameter [#972](https://github.com/smarty-php/smarty/pull/972)
+
 ## [5.0.1] - 2024-03-27
 - Fix error in Smarty\Smarty::compileAllTemplates() by including missing FilesystemIterator class [#966](https://github.com/smarty-php/smarty/issues/966)  
 
-
 ## [5.0.0] - 2024-03-25
 - Fixed that scoped variables would overwrite parent scope [#952](https://github.com/smarty-php/smarty/issues/952)
 - Removed publicly accessible `$tpl->_var_stack` variable
 
-
 ### Fixed
 - Too many shorthand attributes error when using a modifier as a function with more than 3 parameters in an expression [#949](https://github.com/smarty-php/smarty/issues/949)
 

README.md

@@ -7,7 +7,7 @@ Smarty is a template engine for PHP, facilitating the separation of presentation
 Read the [documentation](https://smarty-php.github.io/smarty/) to find out how to use it. 
 
 ## Requirements
-Smarty v5 can be run with PHP 7.2 to PHP 8.3.
+Smarty v5 can be run with PHP 7.2 to PHP 8.4.
 
 ## Installation
 Smarty versions 3.1.11 or later can be installed with [Composer](https://getcomposer.org/).
@@ -18,3 +18,10 @@ composer require smarty/smarty
 ````
 
 More in the [Getting Started](./docs/getting-started.md) section of the docs.
+
+## Sponsors
+
+Smarty is sponsored by:
+- Marc Laporte [@marclaporte](https://github.com/marclaporte)
+
+Thank you!

changelog/918.md

@@ -1 +0,0 @@
-- Internal compiler classes always return a string (the internal has_code flag has been removed for simplicity) [#918](https://github.com/smarty-php/smarty/pull/918)

changelog/933.md

@@ -1 +0,0 @@
-- Using stream variables in templates now throws a deprecation notice [#933](https://github.com/smarty-php/smarty/pull/933)

changelog/937.md

@@ -1,2 +0,0 @@
-- Documented support for `{if $element is in $array}` syntax [#937](https://github.com/smarty-php/smarty/issues/937)
-- Added support for `{if $element is not in $array}` syntax [#937](https://github.com/smarty-php/smarty/issues/937)

changelog/972.md

@@ -1 +0,0 @@
-- Fix Smarty::assign() not returning $this when called with an array as first parameter [#972](https://github.com/smarty-php/smarty/pull/972)

docker-compose.yml

@@ -42,6 +42,11 @@ services:
       service: base
     build:
       dockerfile: ./utilities/testrunners/php83/Dockerfile
+  php84:
+    extends:
+      service: base
+    build:
+      dockerfile: ./utilities/testrunners/php84/Dockerfile
 volumes:
   smarty-code:
 

docs/api/configuring.md

@@ -12,24 +12,27 @@ Use `getTemplateDir()` to retrieve the configured paths.
 <?php
 
  // set a single directory where the config files are stored
-$smarty->setTemplateDir('./config');
+$smarty->setTemplateDir('./templates');
 
-// set multiple directories where config files are stored
-$smarty->setTemplateDir(['./config', './config_2', './config_3']);
+// set multiple directories where templates are stored
+$smarty->setTemplateDir(['./templates', './templates_2', './templates_3']);
 
-// add directory where config files are stored to the current list of dirs
-$smarty->addTemplateDir('./config_1');
+// add directory where templates files are stored to the current list of dirs
+$smarty->addTemplateDir('./templates_1');
 
 // add multiple directories to the current list of dirs
 $smarty->addTemplateDir([
-    './config_2',
-    './config_3',
+    './templates_2',
+    './templates_3',
 ]);
 
 // chaining of method calls
-$smarty->setTemplateDir('./config')
-       ->addTemplateDir('./config_1')
-       ->addTemplateDir('./config_2');
+$smarty->setTemplateDir('./templates')
+       ->addTemplateDir('./templates_1')
+       ->addTemplateDir('./templates_2');
+
+// insert a template dir before exising template dirs
+$smarty->prependTemplateDir('./more_important_templates')
 
 // get all directories where config files are stored
 $template_dirs = $smarty->getTemplateDir();
@@ -140,6 +143,35 @@ Enable auto-escaping for HTML as follows:
 $smarty->setEscapeHtml(true);
 ```
 
+When auto-escaping is enabled, the `|escape` modifier's default mode (`html`) has no effect,
+to avoid double-escaping. It is possible to force it with the `force` mode.
+Other modes (`htmlall`, `url`, `urlpathinfo`, `quotes`, `javascript`) may be used
+with the result you might expect, without double-escaping.
+
+Even when auto-escaping is enabled, you might want to display the content of a variable without
+escaping it. To do so, use the `|raw` modifier.
+
+Examples (with auto-escaping enabled):
+```smarty
+{* these three statements are identical *}
+{$myVar}
+{$myVar|escape}
+{$myVar|escape:'html'}
+
+{* no double-escaping on these statements *}
+{$var|escape:'htmlall'}
+{$myVar|escape:'url'}
+{$myVar|escape:'urlpathinfo'}
+{$myVar|escape:'quotes'}
+{$myVar|escape:'javascript'}
+
+{* no escaping at all *}
+{$myVar|raw}
+
+{* force double-escaping *}
+{$myVar|escape:'force'}
+```
+
 ## Disabling compile check
 By default, Smarty tests to see if the
 current template has changed since the last time

docs/designers/language-builtin-functions/language-function-config-load.md

@@ -9,7 +9,6 @@
 |----------------|----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | file           | Yes      | The name of the config file to include                                                                                                                                                                                                                                                                                          |
 | section        | No       | The name of the section to load                                                                                                                                                                                                                                                                                                 |
-| scope          | no       | How the scope of the loaded variables are treated, which must be one of local, parent or global. local means variables are loaded into the local template context. parent means variables are loaded into both the local context and the parent template that called it. global means variables are available to all templates. |
 
 
 ## Examples

docs/designers/language-modifiers/language-modifier-escape.md

@@ -73,6 +73,6 @@ This snippet is useful for emails, but see also
 <a href="mailto:{$EmailAddress|escape:'hex'}">{$EmailAddress|escape:'mail'}</a>
 ```
 
-See also [escaping smarty parsing](../language-basic-syntax/language-escaping.md),
+See also [auto-escaping](../../api/configuring.md#enabling-auto-escaping), [escaping smarty parsing](../language-basic-syntax/language-escaping.md),
 [`{mailto}`](../language-custom-functions/language-function-mailto.md) and the [obfuscating email
-addresses](../../appendixes/tips.md#obfuscating-e-mail-addresses) page.
+addresses](../../appendixes/tips.md#obfuscating-e-mail-addresses) pages.

docs/designers/language-modifiers/language-modifier-raw.md

@@ -0,0 +1,8 @@
+# raw
+
+Prevents variable escaping when [auto-escaping](../../api/configuring.md#enabling-auto-escaping) is activated.
+
+## Basic usage
+```smarty
+{$myVar|raw}
+```

docs/getting-started.md

@@ -1,7 +1,7 @@
 # Getting started
 
 ## Requirements
-Smarty can be run with PHP 7.2 to PHP 8.3.
+Smarty can be run with PHP 7.2 to PHP 8.4.
 
 ## Installation
 Smarty can be installed with [Composer](https://getcomposer.org/).
@@ -25,9 +25,17 @@ Here's how you create an instance of Smarty in your PHP scripts:
 ```php
 <?php
 
+// Instantiated via composer
 require 'vendor/autoload.php';
 use Smarty\Smarty;
 $smarty = new Smarty();
+
+// or ...
+
+// Instantiated directly
+require("/path/to/smarty/libs/Smarty.class.php");
+use Smarty\Smarty;
+$smarty = new Smarty();
 ```
 
 Now that the library files are in place, it's time to set up the Smarty

docs/img/smarty.svg

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generator: Adobe Illustrator 25.2.1, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 1000 1000" style="enable-background:new 0 0 1000 1000;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#F5E0B4;}
+	.st1{fill:#383535;}
+	.st2{fill:#FBDE3D;}
+	.st3{fill:#8C919F;}
+	.st4{fill:#CACED5;}
+	.st5{fill:#FFFFFF;}
+</style>
+<g>
+	<polygon class="st0" points="782.2,925.8 733.4,643.2 996.4,532.7 745.7,396.4 823.6,120.2 560.7,232.2 391.6,0 313.7,274.7    26.5,260.1 194.4,491.3 3.6,705.5 289.4,721.3 340.5,1000 529.1,787  "/>
+	<path class="st1" d="M706.9,493.4c0-126-102.2-228.2-228.2-228.2c-126,0-228.2,102.2-228.2,228.2c0,81.8,43.1,153.6,107.8,193.8   v202.6l43.5,43.5l0.2-0.2h150.6l0.2,0.2l43.5-43.5V689C662.6,649,706.9,576.4,706.9,493.4z"/>
+	<path class="st2" d="M682.2,492.9c0-112.7-91.3-204-204-204s-204,91.3-204,204c0,78,43.8,145.8,108.1,180.1v93.6h191.7V673   C638.4,638.7,682.2,571,682.2,492.9z"/>
+	<g>
+		<polygon class="st3" points="382.7,790.4 382.7,881.1 412,910.3 544.9,910.3 574.1,881.1 574.1,790.4   "/>
+		<polygon class="st4" points="540,813.2 540,866.5 527,879.5 540.4,892.9 558.7,874.6 558.9,874.6 558.9,813.2   "/>
+	</g>
+	<path class="st5" d="M478.3,310.4c-5,0-9.1,4.1-9.1,9.1c0,5,4.1,9.1,9.1,9.1c90.7,0,164.3,73.5,164.3,164.3c0,5,4.1,9.1,9.1,9.1   s9.1-4.1,9.1-9.1C660.8,392.1,579.1,310.4,478.3,310.4z"/>
+</g>
+</svg>

docs/upgrading.md

@@ -49,6 +49,11 @@ $smarty->registerPlugin('modifier', 'my_special_func', 'my_special_func');
 
 But you may want to consider writing a proper [extension](api/extending/extensions.md).
 
+#### Passing parameters by reference
+You cannot use plugins that expect a parameter by reference anymore. PHP-function such as `reset()`, `prev()`, 
+`next()` and `end()` can be registered as plugin, but they won't work because they expect a parameter by 
+reference and Smarty will try to pass it by value.
+
 ### Removed undocumented tags
 
 Smarty 4 still supported some tags that have been carried over from previous version, but have never been documented.
@@ -102,6 +107,15 @@ Search your code for the following changes:
 - `$smarty->assignByRef()` should be replaced with `$smarty->assign()`
 - `$smarty->loadPlugin()` should be replaced with `$smarty->registerPlugin()`
 
+### Removed undocumented magic API methods
+
+Smarty v4 allowed setting (internal) properties for which no setter existed by using magic methods 
+that start with either `set` or `get`. This has been removed in Smarty 5.
+
+For example, `$smarty->setErrorUnassigned(true);` would set the `error_unassigned` property.
+
+Every setter of getter that was ever documented or unit tested has been kept.
+
 ### Removed PHP constants
 
 The following constants have been removed to prevent global side effects.

libs/Smarty.class.php

@@ -0,0 +1,42 @@
+<?php
+
+/////////////////////////////////////////////////////////////////////
+// This is a stub PSR-4 loading script that gets all the pieces of //
+// Smarty 5.x loaded without requiring the use of composer. It's   //
+// not really a 'class' file, but the name is used so we're        //
+// backwards compatible with previous versions of Smarty.          //
+//                                                                 //
+// Example:                                                        //
+// require_once("/path/to/smarty/libs/Smarty.class.php");          //
+//                                                                 //
+// $smarty = new Smarty\Smarty;                                    //
+// $smarty->testInstall();                                         //
+/////////////////////////////////////////////////////////////////////
+
+define('__SMARTY_DIR', __DIR__ . '/../src/');
+
+// Global function declarations
+require_once(__SMARTY_DIR . "/functions.php");
+
+spl_autoload_register(function ($class) {
+	// Class prefix
+	$prefix = 'Smarty\\';
+
+	// Does the class use the namespace prefix?
+	$len = strlen($prefix);
+	if (strncmp($prefix, $class, $len) !== 0) {
+		// If not, move to the next registered autoloader
+		return;
+	}
+
+	// Hack off the prefix part
+	$relative_class = substr($class, $len);
+
+	// Build a path to the include file
+	$file = __SMARTY_DIR . str_replace('\\', '/', $relative_class) . '.php';
+
+	// If the file exists, require it
+	if (file_exists($file)) {
+		require_once($file);
+	}
+});

mkdocs.yml

@@ -68,6 +68,7 @@ nav:
         - 'noprint': 'designers/language-modifiers/language-modifier-noprint.md'
         - 'number_format': 'designers/language-modifiers/language-modifier-number-format.md'
         - 'nl2br': 'designers/language-modifiers/language-modifier-nl2br.md'
+        - 'raw': 'designers/language-modifiers/language-modifier-raw.md'
         - 'regex_replace': 'designers/language-modifiers/language-modifier-regex-replace.md'
         - 'replace': 'designers/language-modifiers/language-modifier-replace.md'
         - 'round': 'designers/language-modifiers/language-modifier-round.md'

run-tests-for-all-php-versions.sh

@@ -14,3 +14,4 @@ $COMPOSE_CMD run --rm php80 ./run-tests.sh $@ && \
 $COMPOSE_CMD run --rm php81 ./run-tests.sh $@ && \
 $COMPOSE_CMD run --rm php82 ./run-tests.sh $@
 $COMPOSE_CMD run --rm php83 ./run-tests.sh $@
+$COMPOSE_CMD run --rm php84 ./run-tests.sh $@

src/BlockHandler/BlockPluginWrapper.php

@@ -14,6 +14,6 @@ class BlockPluginWrapper extends Base {
 	}
 
 	public function handle($params, $content, Template $template, &$repeat) {
-		return call_user_func_array($this->callback, [$params, $content, &$template, &$repeat]);
+		return \call_user_func_array($this->callback, [$params, $content, &$template, &$repeat]);
 	}
 }

src/BlockHandler/TextFormat.php

@@ -20,9 +20,6 @@ use Smarty\Template;
  * - indent_char   - string (" ")
  * - wrap_boundary - boolean (true)
  *
- * @link   https://www.smarty.net/manual/en/language.function.textformat.php {textformat}
- *         (Smarty online manual)
- *
  * @param array                    $params   parameters
  * @param string                   $content  contents of the block
  * @param Template $template template object

src/Cacheresource/Base.php

@@ -44,7 +44,7 @@ abstract class Base
 	 */
     abstract public function process(
 	    Template $_template,
-	    Cached   $cached = null,
+	    ?Cached  $cached = null,
 	             $update = false
     );
 

src/Cacheresource/Custom.php

@@ -139,7 +139,7 @@ abstract class Custom extends Base
 	 */
     public function process(
 	    Template               $_smarty_tpl,
-	    \Smarty\Template\Cached $cached = null,
+	    ?\Smarty\Template\Cached $cached = null,
 	                           $update = false
     ) {
         if (!$cached) {

src/Cacheresource/File.php

@@ -99,7 +99,7 @@ class File extends Base
 	 */
     public function process(
 	    Template $_smarty_tpl,
-	    Cached   $cached = null,
+	    ?Cached  $cached = null,
 	             $update = false
     ) {
         $_smarty_tpl->getCached()->setValid(false);

src/Cacheresource/KeyValueStore.php

@@ -103,7 +103,7 @@ abstract class KeyValueStore extends Base
 	 */
     public function process(
 	    Template $_smarty_tpl,
-	    Cached   $cached = null,
+	    ?Cached  $cached = null,
 	             $update = false
     ) {
         if (!$cached) {

src/Compile/Modifier/CatModifierCompiler.php

@@ -11,8 +11,6 @@ namespace Smarty\Compile\Modifier;
  * Input:    string to catenate
  * Example:  {$var|cat:"foo"}
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.cat.php cat
- *           (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/CountCharactersModifierCompiler.php

@@ -6,8 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     count_characters
  * Purpose:  count the number of characters in a text
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.count.characters.php count_characters (Smarty online
- *         manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/CountParagraphsModifierCompiler.php

@@ -6,8 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     count_paragraphs
  * Purpose:  count the number of paragraphs in a text
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.count.paragraphs.php
- *          count_paragraphs (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/CountSentencesModifierCompiler.php

@@ -6,8 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     count_sentences
  * Purpose:  count the number of sentences in a text
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.count.paragraphs.php
- *          count_sentences (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/CountWordsModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     count_words
  * Purpose:  count the number of words in a text
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.count.words.php count_words (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/DefaultModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     default
  * Purpose:  designate default value for empty variables
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.default.php default (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/EscapeModifierCompiler.php

@@ -9,7 +9,6 @@ use Smarty\Exception;
  * Name:     escape
  * Purpose:  escape string for output
  *
- * @link   https://www.smarty.net/docsv2/en/language.modifier.escape count_characters (Smarty online manual)
  * @author Rodney Rehm
  */
 
@@ -25,22 +24,32 @@ class EscapeModifierCompiler extends Base {
 			}
 			switch ($esc_type) {
 				case 'html':
+				case 'force':
+					// in case of auto-escaping, and without the 'force' option, no double-escaping
+					if ($compiler->getSmarty()->escape_html && $esc_type != 'force')
+						return $params[0];
+					// otherwise, escape the variable
 					return 'htmlspecialchars((string)' . $params[ 0 ] . ', ENT_QUOTES, ' . var_export($char_set, true) . ', ' .
 						var_export($double_encode, true) . ')';
 				// no break
 				case 'htmlall':
+					$compiler->setRawOutput(true);
 					return 'htmlentities(mb_convert_encoding((string)' . $params[ 0 ] . ', \'UTF-8\', ' .
 						var_export($char_set, true) . '), ENT_QUOTES, \'UTF-8\', ' .
 						var_export($double_encode, true) . ')';
 				// no break
 				case 'url':
+					$compiler->setRawOutput(true);
 					return 'rawurlencode((string)' . $params[ 0 ] . ')';
 				case 'urlpathinfo':
+					$compiler->setRawOutput(true);
 					return 'str_replace("%2F", "/", rawurlencode((string)' . $params[ 0 ] . '))';
 				case 'quotes':
+					$compiler->setRawOutput(true);
 					// escape unescaped single quotes
 					return 'preg_replace("%(?<!\\\\\\\\)\'%", "\\\'", (string)' . $params[ 0 ] . ')';
 				case 'javascript':
+					$compiler->setRawOutput(true);
 					// escape quotes and backslashes, newlines, etc.
 					// see https://html.spec.whatwg.org/multipage/scripting.html#restrictions-for-contents-of-script-elements
 					return 'strtr((string)' .
@@ -54,4 +63,4 @@ class EscapeModifierCompiler extends Base {
 		}
 		return '$_smarty_tpl->getSmarty()->getModifierCallback(\'escape\')(' . join(', ', $params) . ')';
 	}
-}
+}

src/Compile/Modifier/IndentModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     indent
  * Purpose:  indent lines of text
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.indent.php indent (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/LowerModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     lower
  * Purpose:  convert string to lowercase
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.lower.php lower (Smarty online manual)
  * @author Monte Ohrt <monte at ohrt dot com>
  * @author Uwe Tews
  */

src/Compile/Modifier/Nl2brModifierCompiler.php

@@ -7,7 +7,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     nl2br
  * Purpose:  insert HTML line breaks before all newlines in a string
  *
- * @link   https://www.smarty.net/docs/en/language.modifier.nl2br.tpl nl2br (Smarty online manual)
  */
 
 class Nl2brModifierCompiler extends Base {

src/Compile/Modifier/RawModifierCompiler.php

@@ -0,0 +1,21 @@
+<?php
+namespace Smarty\Compile\Modifier;
+
+use Smarty\Exception;
+
+/**
+ * Smarty raw modifier plugin
+ * Type:     modifier
+ * Name:     raw
+ * Purpose:  when escaping is enabled by default, generates a raw output of a variable
+ *
+ * @author Amaury Bouchard
+ */
+
+class RawModifierCompiler extends Base {
+
+	public function compile($params, \Smarty\Compiler\Template $compiler) {
+		$compiler->setRawOutput(true);
+		return ($params[0]);
+	}
+}

src/Compile/Modifier/RoundModifierCompiler.php

@@ -7,7 +7,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     round
  * Purpose:  Returns the rounded value of num to specified precision (number of digits after the decimal point)
  *
- * @link   https://www.smarty.net/docs/en/language.modifier.round.tpl round (Smarty online manual)
  */
 
 class RoundModifierCompiler extends Base {

src/Compile/Modifier/StrRepeatModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     str_repeat
  * Purpose:  returns string repeated times times
  *
- * @link   https://www.smarty.net/docs/en/language.modifier.str_repeat.tpl str_repeat (Smarty online manual)
  */
 
 class StrRepeatModifierCompiler extends Base {

src/Compile/Modifier/StringFormatModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     string_format
  * Purpose:  format strings via sprintf
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.string.format.php string_format (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/StripModifierCompiler.php

@@ -9,7 +9,6 @@ namespace Smarty\Compile\Modifier;
  * Example:  {$var|strip} {$var|strip:" "}
  * Date:     September 25th, 2002
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.strip.php strip (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/StripTagsModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     strip_tags
  * Purpose:  strip html tags from text
  *
- * @link   https://www.smarty.net/docs/en/language.modifier.strip.tags.tpl strip_tags (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/StrlenModifierCompiler.php

@@ -7,7 +7,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     strlen
  * Purpose:  return the length of the given string
  *
- * @link   https://www.smarty.net/docs/en/language.modifier.strlen.tpl strlen (Smarty online manual)
  */
 
 class StrlenModifierCompiler extends Base {

src/Compile/Modifier/UpperModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     lower
  * Purpose:  convert string to uppercase
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.upper.php lower (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/Modifier/WordWrapModifierCompiler.php

@@ -6,7 +6,6 @@ namespace Smarty\Compile\Modifier;
  * Name:     wordwrap
  * Purpose:  wrap a string of text at a given length
  *
- * @link   https://www.smarty.net/manual/en/language.modifier.wordwrap.php wordwrap (Smarty online manual)
  * @author Uwe Tews
  */
 

src/Compile/ModifierCompiler.php

@@ -75,7 +75,7 @@ class ModifierCompiler extends Base {
 				}
 			}
 		}
-		return $output;
+		return (string)$output;
 	}
 
 	/**

src/Compile/PrintExpressionCompiler.php

@@ -82,12 +82,13 @@ class PrintExpressionCompiler extends Base {
 					$output = $compiler->compileModifier($modifierlist, $output);
 				}
 
-				if ($compiler->getTemplate()->getSmarty()->escape_html) {
+				if ($compiler->getTemplate()->getSmarty()->escape_html && !$compiler->isRawOutput()) {
 					$output = "htmlspecialchars((string) ({$output}), ENT_QUOTES, '" . addslashes(\Smarty\Smarty::$_CHARSET) . "')";
 				}
 
 			}
 			$output = "<?php echo {$output};?>\n";
+			$compiler->setRawOutput(false);
 		}
 		return $output;
 	}

src/Compile/Tag/ConfigLoad.php

@@ -43,7 +43,7 @@ class ConfigLoad extends Base {
 	 * @var array
 	 * @see BasePlugin
 	 */
-	protected $optional_attributes = ['section', 'scope'];
+	protected $optional_attributes = ['section'];
 
 	/**
 	 * Attribute definition: Overwrites base class.
@@ -51,7 +51,7 @@ class ConfigLoad extends Base {
 	 * @var array
 	 * @see BasePlugin
 	 */
-	protected $option_flags = ['nocache', 'noscope'];
+	protected $option_flags = [];
 
 	/**
 	 * Compiles code for the {config_load} tag
@@ -66,9 +66,7 @@ class ConfigLoad extends Base {
 	{
 		// check and get attributes
 		$_attr = $this->getAttributes($compiler, $args);
-		if ($_attr['nocache'] === true) {
-			$compiler->trigger_template_error('nocache option not allowed', null, true);
-		}
+
 		// save possible attributes
 		$conf_file = $_attr['file'];
 		$section = $_attr['section'] ?? 'null';

src/Compile/Tag/ExtendsTag.php

@@ -32,7 +32,7 @@ class ExtendsTag extends Inheritance {
 	 *
 	 * @var array
 	 */
-	protected $optional_attributes = ['extends_resource'];
+	protected $optional_attributes = [];
 
 	/**
 	 * Attribute definition: Overwrites base class.
@@ -64,29 +64,7 @@ class ExtendsTag extends Inheritance {
 		}
 		// add code to initialize inheritance
 		$this->registerInit($compiler, true);
-		$file = trim($_attr['file'], '\'"');
-		if (strlen($file) > 8 && substr($file, 0, 8) === 'extends:') {
-			// generate code for each template
-			$files = array_reverse(explode('|', substr($file, 8)));
-			$i = 0;
-			foreach ($files as $file) {
-				if ($file[0] === '"') {
-					$file = trim($file, '".');
-				} else {
-					$file = "'{$file}'";
-				}
-				$i++;
-				if ($i === count($files) && isset($_attr['extends_resource'])) {
-					$this->compileEndChild($compiler);
-				}
-				$this->compileInclude($compiler, $file);
-			}
-			if (!isset($_attr['extends_resource'])) {
-				$this->compileEndChild($compiler);
-			}
-		} else {
-			$this->compileEndChild($compiler, $_attr['file']);
-		}
+		$this->compileEndChild($compiler, $_attr['file']);
 		return '';
 	}
 
@@ -106,42 +84,4 @@ class ExtendsTag extends Inheritance {
 			(isset($template) ?	", {$template}, \$_smarty_current_dir" : '') . ");\n?>"
 		);
 	}
-
-	/**
-	 * Add code for including subtemplate to end of template
-	 *
-	 * @param \Smarty\Compiler\Template $compiler
-	 * @param string $template subtemplate name
-	 *
-	 * @throws \Smarty\CompilerException
-	 * @throws \Smarty\Exception
-	 */
-	private function compileInclude(\Smarty\Compiler\Template $compiler, $template) {
-		$compiler->getParser()->template_postfix[] = new \Smarty\ParseTree\Tag(
-			$compiler->getParser(),
-			$compiler->compileTag(
-				'include',
-				[
-					$template,
-					['scope' => 'parent'],
-				]
-			)
-		);
-	}
-
-	/**
-	 * Create source code for {extends} from source components array
-	 *
-	 * @param \Smarty\Template $template
-	 *
-	 * @return string
-	 */
-	public static function extendsSourceArrayCode(\Smarty\Template $template) {
-		$resources = [];
-		foreach ($template->getSource()->components as $source) {
-			$resources[] = $source->resource;
-		}
-		return $template->getLeftDelimiter() . 'extends file=\'extends:' . join('|', $resources) .
-			'\' extends_resource=true' . $template->getRightDelimiter();
-	}
 }

src/Compile/Tag/Section.php

@@ -99,7 +99,7 @@ class Section extends ForeachSection {
 
 		if ($compiler->tag_nocache) {
 			// push a {nocache} tag onto the stack to prevent caching of this block
-			$this->openTag('nocache');
+			$this->openTag($compiler, 'nocache');
 		}
 
 		$this->openTag($compiler, 'section', ['section', $compiler->tag_nocache]);

src/Compile/Tag/SectionClose.php

@@ -33,7 +33,7 @@ class SectionClose extends Base {
 
 		if ($nocache_pushed) {
 			// pop the pushed virtual nocache tag
-			$this->closeTag('nocache');
+			$this->closeTag($compiler, 'nocache');
 		}
 
 		$output = "<?php\n";

src/Compiler/CodeFrame.php

@@ -41,7 +41,7 @@ class CodeFrame
         $content = '',
         $functions = '',
         $cache = false,
-        \Smarty\Compiler\Template $compiler = null
+        ?\Smarty\Compiler\Template $compiler = null
     ) {
         // build property code
         $properties[ 'version' ] = \Smarty\Smarty::SMARTY_VERSION;

src/Compiler/Template.php

@@ -313,6 +313,12 @@ class Template extends BaseCompiler {
 	 */
 	private $noCacheStackDepth = 0;
 
+	/**
+	 * disabled auto-escape (when set to true, the next variable output is not auto-escaped)
+	 *
+	 * @var boolean
+	 */
+	private $raw_output = false;
 
 	/**
 	 * Initialize compiler
@@ -368,7 +374,7 @@ class Template extends BaseCompiler {
 	 * @throws CompilerException
 	 * @throws Exception
 	 */
-	public function compileTemplateSource(\Smarty\Template $template, \Smarty\Compiler\Template $parent_compiler = null) {
+	public function compileTemplateSource(\Smarty\Template $template, ?\Smarty\Compiler\Template $parent_compiler = null) {
 		try {
 			// save template object in compiler class
 			$this->template = $template;
@@ -403,21 +409,37 @@ class Template extends BaseCompiler {
 			}
 			// get template source
 			if (!empty($this->template->getSource()->components)) {
-				// we have array of inheritance templates by extends: resource
-				// generate corresponding source code sequence
-				$_content =
-					ExtendsTag::extendsSourceArrayCode($this->template);
+
+				$_compiled_code = '<?php $_smarty_tpl->getInheritance()->init($_smarty_tpl, true); ?>';
+
+				$i = 0;
+				$reversed_components = array_reverse($this->template->getSource()->components);
+				foreach ($reversed_components as $source) {
+					$i++;
+					if ($i === count($reversed_components)) {
+						$_compiled_code .= '<?php $_smarty_tpl->getInheritance()->endChild($_smarty_tpl); ?>';
+					}
+					$_compiled_code .= $this->compileTag(
+						'include',
+						[
+							var_export($source->resource, true),
+							['scope' => 'parent'],
+						]
+					);
+				}
+				$_compiled_code = $this->smarty->runPostFilters($_compiled_code, $this->template);
 			} else {
 				// get template source
 				$_content = $this->template->getSource()->getContent();
+				$_compiled_code = $this->smarty->runPostFilters(
+					$this->doCompile(
+						$this->smarty->runPreFilters($_content, $this->template),
+						true
+					),
+					$this->template
+				);
 			}
-			$_compiled_code = $this->smarty->runPostFilters(
-				$this->doCompile(
-					$this->smarty->runPreFilters($_content, $this->template),
-					true
-				),
-				$this->template
-			);
+
 		} catch (\Exception $e) {
 			if ($this->smarty->debugging) {
 				$this->smarty->getDebug()->end_compile($this->template);
@@ -483,7 +505,7 @@ class Template extends BaseCompiler {
 	 *
 	 * @return string
 	 */
-	public function compileVariable($variable) {
+	public function triggerTagNoCache($variable): void {
 		if (!strpos($variable, '(')) {
 			// not a variable variable
 			$var = trim($variable, '\'');
@@ -494,7 +516,6 @@ class Template extends BaseCompiler {
 					false
 				)->isNocache();
 		}
-		return '$_smarty_tpl->getValue(' . $variable . ')';
 	}
 
 	/**
@@ -643,7 +664,7 @@ class Template extends BaseCompiler {
 		$script = null;
 		$cacheable = true;
 
-		$result = call_user_func_array(
+		$result = \call_user_func_array(
 			$defaultPluginHandlerFunc,
 			[
 				$tag,
@@ -680,7 +701,8 @@ class Template extends BaseCompiler {
 	 *
 	 * @return string
 	 */
-	public function appendCode($left, $right) {
+	public function appendCode(string $left, string $right): string
+	{
 		if (preg_match('/\s*\?>\s?$/D', $left) && preg_match('/^<\?php\s+/', $right)) {
 			$left = preg_replace('/\s*\?>\s?$/D', "\n", $left);
 			$left .= preg_replace('/^<\?php\s+/', '', $right);
@@ -1056,7 +1078,7 @@ class Template extends BaseCompiler {
 		$prefixArray = array_merge($this->prefix_code, array_pop($this->prefixCodeStack));
 		$this->prefixCodeStack[] = [];
 		foreach ($prefixArray as $c) {
-			$code = $this->appendCode($code, $c);
+			$code = $this->appendCode($code, (string) $c);
 		}
 		$this->prefix_code = [];
 		return $code;
@@ -1124,12 +1146,12 @@ class Template extends BaseCompiler {
 		}
 
 		// check if tag is a function
-		if ($this->smarty->getFunctionHandler($base_tag)) {
-			if (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($base_tag, $this)) {
+		if ($this->smarty->getFunctionHandler($tag)) {
+			if (!isset($this->smarty->security_policy) || $this->smarty->security_policy->isTrustedTag($tag, $this)) {
 				return (new \Smarty\Compile\PrintExpressionCompiler())->compile(
 					['nofilter'], // functions are never auto-escaped
 					$this,
-					['value' =>	$this->compileFunctionCall($base_tag, $args, $parameter)]
+					['value' =>	$this->compileFunctionCall($tag, $args, $parameter)]
 				);
 			}
 		}
@@ -1142,16 +1164,16 @@ class Template extends BaseCompiler {
 		}
 
 		// the default plugin handler is a handler of last resort, it may also handle not specifically registered tags.
-		if ($callback = $this->getPluginFromDefaultHandler($base_tag, Smarty::PLUGIN_COMPILER)) {
+		if ($callback = $this->getPluginFromDefaultHandler($tag, Smarty::PLUGIN_COMPILER)) {
 			if (!empty($parameter['modifierlist'])) {
-				throw new CompilerException('No modifiers allowed on ' . $base_tag);
+				throw new CompilerException('No modifiers allowed on ' . $tag);
 			}
 			$tagCompiler = new \Smarty\Compile\Tag\BCPluginWrapper($callback);
 			return $tagCompiler->compile($args, $this, $parameter);
 		}
 
 		if ($this->getPluginFromDefaultHandler($base_tag, Smarty::PLUGIN_FUNCTION)) {
-			return $this->defaultHandlerFunctionCallCompiler->compile($args, $this, $parameter, $tag, $base_tag);
+			return $this->defaultHandlerFunctionCallCompiler->compile($args, $this, $parameter, $tag, $tag);
 		}
 
 		if ($this->getPluginFromDefaultHandler($base_tag, Smarty::PLUGIN_BLOCK)) {
@@ -1258,9 +1280,10 @@ class Template extends BaseCompiler {
 		}
 		// call post compile callbacks
 		foreach ($this->postCompileCallbacks as $cb) {
-			$parameter = $cb;
-			$parameter[0] = $this;
-			call_user_func_array($cb[0], $parameter);
+			$callbackFunction = $cb[0];
+			$parameters = $cb;
+			$parameters[0] = $this;
+			$callbackFunction(...$parameters);
 		}
 		// return compiled code
 		return $this->prefixCompiledCode . $this->parser->retvalue . $this->postfixCompiledCode;
@@ -1469,4 +1492,21 @@ class Template extends BaseCompiler {
 	public function getTagStack(): array {
 		return $this->_tag_stack;
 	}
+
+	/**
+	 * Should the next variable output be raw (true) or auto-escaped (false)
+	 * @return bool
+	 */
+	public function isRawOutput(): bool {
+		return $this->raw_output;
+	}
+
+	/**
+	 * Should the next variable output be raw (true) or auto-escaped (false)
+	 * @param bool $raw_output
+	 * @return void
+	 */
+	public function setRawOutput(bool $raw_output): void {
+		$this->raw_output = $raw_output;
+	}
 }

src/CompilerException.php

@@ -16,14 +16,14 @@ class CompilerException extends Exception {
 	 * @param int $code The Exception code.
 	 * @param string|null $filename The filename where the exception is thrown.
 	 * @param int|null $line The line number where the exception is thrown.
-	 * @param Throwable|null $previous The previous exception used for the exception chaining.
+	 * @param \Throwable|null $previous The previous exception used for the exception chaining.
 	 */
 	public function __construct(
 		string    $message = "",
 		int       $code = 0,
 		?string   $filename = null,
 		?int      $line = null,
-		Throwable $previous = null
+		?\Throwable $previous = null
 	) {
 		parent::__construct($message, $code, $previous);
 

src/Data.php

@@ -163,8 +163,6 @@ class Data
      *                              be not cached
      *
      * @return Data
-     * @link https://www.smarty.net/docs/en/api.append.tpl
-     *
      * @api  Smarty::append()
      */
 	public function append($tpl_var, $value = null, $merge = false, $nocache = false)
@@ -218,7 +216,6 @@ class Data
      *
      * @return mixed variable value or or array of variables
      * @api  Smarty::getTemplateVars()
-     * @link https://www.smarty.net/docs/en/api.get.template.vars.tpl
      *
      */
     public function getTemplateVars($varName = null, $searchParents = true)
@@ -227,7 +224,10 @@ class Data
 			return $this->getValue($varName, $searchParents);
 	    }
 
-		return array_merge($this->parent && $searchParents ? $this->parent->getTemplateVars() : [], $this->tpl_vars);
+		return array_merge(
+			$this->parent && $searchParents ? $this->parent->getTemplateVars() : [],
+			array_map(function(Variable $var) { return $var->getValue(); }, $this->tpl_vars)
+		);
     }
 
 	/**
@@ -290,7 +290,7 @@ class Data
 	 * @return bool
 	 */
 	public function hasVariable($varName): bool {
-		return !($this->getVariable($varName) instanceof UndefinedVariable);
+		return !($this->getVariable($varName, true, false) instanceof UndefinedVariable);
 	}
 
 	/**
@@ -351,7 +351,6 @@ class Data
 	 * @param string|array $tpl_var the template variable(s) to clear
 	 *
 	 * @return Data
-	 * @link https://www.smarty.net/docs/en/api.clear.assign.tpl
 	 *
 	 * @api  Smarty::clearAssign()
 	 */
@@ -371,7 +370,6 @@ class Data
 	 * clear all the assigned template variables.
 	 *
 	 * @return Data
-	 * @link https://www.smarty.net/docs/en/api.clear.all.assign.tpl
 	 *
 	 * @api  Smarty::clearAllAssign()
 	 */
@@ -387,7 +385,6 @@ class Data
 	 * @param string|null $name variable name or null
 	 *
 	 * @return Data
-	 * @link https://www.smarty.net/docs/en/api.clear.config.tpl
 	 *
 	 * @api  Smarty::clearConfig()
 	 */
@@ -440,7 +437,6 @@ class Data
 	 *
 	 * @return mixed variable value or or array of variables
 	 * @throws Exception
-	 * @link https://www.smarty.net/docs/en/api.get.config.vars.tpl
 	 *
 	 * @api  Smarty::getConfigVars()
 	 */
@@ -462,7 +458,6 @@ class Data
 
 	 * @returns $this
 	 * @throws \Exception
-	 * @link https://www.smarty.net/docs/en/api.config.load.tpl
 	 *
 	 * @api  Smarty::configLoad()
 	 */

src/Extension/CallbackWrapper.php

@@ -26,7 +26,7 @@ class CallbackWrapper {
 
 	public function handle(...$params) {
 		try {
-			return call_user_func_array($this->callback, $params);
+			return ($this->callback)(...$params);
 		} catch (\ArgumentCountError $e) {
 			throw new Exception("Invalid number of arguments to modifier " . $this->modifierName);
 		}

src/Extension/DefaultExtension.php

@@ -35,6 +35,7 @@ class DefaultExtension extends Base {
 			case 'lower': $this->modifiers[$modifier] = new \Smarty\Compile\Modifier\LowerModifierCompiler(); break;
 			case 'nl2br': $this->modifiers[$modifier] = new \Smarty\Compile\Modifier\Nl2brModifierCompiler(); break;
 			case 'noprint': $this->modifiers[$modifier] = new \Smarty\Compile\Modifier\NoPrintModifierCompiler(); break;
+			case 'raw': $this->modifiers[$modifier] = new \Smarty\Compile\Modifier\RawModifierCompiler(); break;
 			case 'round': $this->modifiers[$modifier] = new \Smarty\Compile\Modifier\RoundModifierCompiler(); break;
 			case 'str_repeat': $this->modifiers[$modifier] = new \Smarty\Compile\Modifier\StrRepeatModifierCompiler(); break;
 			case 'string_format': $this->modifiers[$modifier] = new \Smarty\Compile\Modifier\StringFormatModifierCompiler(); break;
@@ -113,7 +114,6 @@ class DefaultExtension extends Base {
 	 * Name:     spacify
 	 * Purpose:  add spaces between characters in a string
 	 *
-	 * @link   https://www.smarty.net/manual/en/language.modifier.spacify.php spacify (Smarty online manual)
 	 * @author Monte Ohrt <monte at ohrt dot com>
 	 *
 	 * @param string $string       input string
@@ -234,7 +234,6 @@ class DefaultExtension extends Base {
 	 *          - format: strftime format for output
 	 *          - default_date: default date if $string is empty
 	 *
-	 * @link   https://www.smarty.net/manual/en/language.modifier.date.format.php date_format (Smarty online manual)
 	 * @author Monte Ohrt <monte at ohrt dot com>
 	 *
 	 * @param string $string       input date string
@@ -386,7 +385,6 @@ class DefaultExtension extends Base {
 	 * Name:     escape
 	 * Purpose:  escape string for output
 	 *
-	 * @link   https://www.smarty.net/docs/en/language.modifier.escape
 	 * @author Monte Ohrt <monte at ohrt dot com>
 	 *
 	 * @param string  $string        input string
@@ -654,8 +652,6 @@ class DefaultExtension extends Base {
 	 * Name:     regex_replace
 	 * Purpose:  regular expression search/replace
 	 *
-	 * @link   https://www.smarty.net/manual/en/language.modifier.regex.replace.php
-	 *          regex_replace (Smarty online manual)
 	 * @author Monte Ohrt <monte at ohrt dot com>
 	 *
 	 * @param string       $string  input string
@@ -703,7 +699,6 @@ class DefaultExtension extends Base {
 	 * Name:     replace
 	 * Purpose:  simple search/replace
 	 *
-	 * @link   https://www.smarty.net/manual/en/language.modifier.replace.php replace (Smarty online manual)
 	 * @author Monte Ohrt <monte at ohrt dot com>
 	 * @author Uwe Tews
 	 *
@@ -726,7 +721,6 @@ class DefaultExtension extends Base {
 	 *               optionally splitting in the middle of a word, and
 	 *               appending the $etc string or inserting $etc into the middle.
 	 *
-	 * @link   https://www.smarty.net/manual/en/language.modifier.truncate.php truncate (Smarty online manual)
 	 * @author Monte Ohrt <monte at ohrt dot com>
 	 *
 	 * @param string  $string      input string
@@ -760,4 +754,4 @@ class DefaultExtension extends Base {
 		return $string;
 	}
 
-}
+}

src/FunctionHandler/Counter.php

@@ -13,8 +13,6 @@ use Smarty\Template;
  * @param Template $template template object
  *
  * @return string|null
- *@link   https://www.smarty.net/manual/en/language.function.counter.php {counter}
- *         (Smarty online manual)
  *
  * @author Monte Ohrt <monte at ohrt dot com>
  */

src/FunctionHandler/Cycle.php

@@ -26,8 +26,6 @@ use Smarty\Template;
  * {cycle name=row values="one,two,three" reset=true}
  * {cycle name=row}
  *
- * @link    https://www.smarty.net/manual/en/language.function.cycle.php {cycle}
- *           (Smarty online manual)
  * @author  Monte Ohrt <monte at ohrt dot com>
  * @author  credit to Mark Priatel <mpriatel@rogers.com>
  * @author  credit to Gerard <gerard@interfold.com>

src/FunctionHandler/Fetch.php

@@ -10,8 +10,6 @@ use Smarty\Template;
  * Name:     fetch
  * Purpose:  fetch file, web or ftp data and display results
  *
- * @link   https://www.smarty.net/manual/en/language.function.fetch.php {fetch}
- *         (Smarty online manual)
  * @author Monte Ohrt <monte at ohrt dot com>
  *
  * @param array                    $params   parameters

src/FunctionHandler/HtmlCheckboxes.php

@@ -27,8 +27,6 @@ use Smarty\Template;
  * - assign     (optional) - assign the output as an array to this variable
  * - escape     (optional) - escape the content (not value), defaults to true
  *
- * @link    https://www.smarty.net/manual/en/language.function.html.checkboxes.php {html_checkboxes}
- *             (Smarty online manual)
  * @author  Christopher Kvarme <christopher.kvarme@flashjab.com>
  * @author  credits to Monte Ohrt <monte at ohrt dot com>
  * @version 1.0

src/FunctionHandler/HtmlImage.php

@@ -20,8 +20,6 @@ use Smarty\Template;
  * - basedir     - (optional) - base directory for absolute paths, default is environment variable DOCUMENT_ROOT
  * - path_prefix - prefix for path output (optional, default empty)
  *
- * @link    https://www.smarty.net/manual/en/language.function.html.image.php {html_image}
- *          (Smarty online manual)
  * @author  Monte Ohrt <monte at ohrt dot com>
  * @author  credits to Duda <duda@big.hu>
  * @version 1.0

src/FunctionHandler/HtmlOptions.php

@@ -19,8 +19,6 @@ use Smarty\Template;
  * - id         (optional) - string default not set
  * - class      (optional) - string default not set
  *
- * @link   https://www.smarty.net/manual/en/language.function.html.options.php {html_image}
- *           (Smarty online manual)
  * @author Monte Ohrt <monte at ohrt dot com>
  * @author Ralf Strehle (minor optimization) <ralf dot strehle at yahoo dot de>
  *

src/FunctionHandler/HtmlRadios.php

@@ -27,8 +27,6 @@ use Smarty\Template;
  * {html_radios values=$ids name='box' separator='<br>' output=$names}
  * {html_radios values=$ids checked=$checked separator='<br>' output=$names}
  *
- * @link    https://www.smarty.net/manual/en/language.function.html.radios.php {html_radios}
- *          (Smarty online manual)
  * @author  Christopher Kvarme <christopher.kvarme@flashjab.com>
  * @author  credits to Monte Ohrt <monte at ohrt dot com>
  * @version 1.0

src/FunctionHandler/HtmlSelectDate.php

@@ -26,8 +26,6 @@ use Smarty\Template;
  *            - 2.0 complete rewrite for performance,
  *              added attributes month_names, *_id
  *
- * @link    https://www.smarty.net/manual/en/language.function.html.select.date.php {html_select_date}
- *           (Smarty online manual)
  * @version 2.0
  * @author  Andrei Zmievski
  * @author  Monte Ohrt <monte at ohrt dot com>

src/FunctionHandler/HtmlSelectTime.php

@@ -9,8 +9,6 @@ use Smarty\Template;
  * Name:     html_select_time
  * Purpose:  Prints the dropdowns for time selection
  *
- * @link   https://www.smarty.net/manual/en/language.function.html.select.time.php {html_select_time}
- *           (Smarty online manual)
  * @author Roberto Berto <roberto@berto.net>
  * @author Monte Ohrt <monte AT ohrt DOT com>
  *

src/FunctionHandler/HtmlTable.php

@@ -37,8 +37,6 @@ use Smarty\Template;
  * @return string
  *@author  credit to boots <boots dot smarty at yahoo dot com>
  * @version 1.1
- * @link    https://www.smarty.net/manual/en/language.function.html.table.php {html_table}
- *           (Smarty online manual)
  *
  * @author  Monte Ohrt <monte at ohrt dot com>
  * @author  credit to Messju Mohr <messju at lammfellpuschen dot de>

src/FunctionHandler/Mailto.php

@@ -35,8 +35,6 @@ use Smarty\Template;
  * {mailto address="me@domain.com" cc="you@domain.com,they@domain.com"}
  * {mailto address="me@domain.com" extra='class="mailto"'}
  *
- * @link    https://www.smarty.net/manual/en/language.function.mailto.php {mailto}
- *           (Smarty online manual)
  * @version 1.2
  * @author  Monte Ohrt <monte at ohrt dot com>
  * @author  credits to Jason Sweat (added cc, bcc and subject functionality)

src/FunctionHandler/Math.php

@@ -10,8 +10,6 @@ use Smarty\Template;
  * Name:     math
  * Purpose:  handle math computations in template
  *
- * @link   https://www.smarty.net/manual/en/language.function.math.php {math}
- *           (Smarty online manual)
  * @author Monte Ohrt <monte at ohrt dot com>
  *
  * @param array                    $params   parameters

src/ParseTree/Dq.php

@@ -47,18 +47,18 @@ class Dq extends Base
             if ($subtree instanceof Code) {
                 $this->subtrees[ $last_subtree ]->data =
                     $parser->compiler->appendCode(
-                        $this->subtrees[ $last_subtree ]->data,
+                        (string) $this->subtrees[ $last_subtree ]->data,
                         '<?php echo ' . $subtree->data . ';?>'
                     );
             } elseif ($subtree instanceof DqContent) {
                 $this->subtrees[ $last_subtree ]->data =
                     $parser->compiler->appendCode(
-                        $this->subtrees[ $last_subtree ]->data,
+                        (string) $this->subtrees[ $last_subtree ]->data,
                         '<?php echo "' . $subtree->data . '";?>'
                     );
             } else {
                 $this->subtrees[ $last_subtree ]->data =
-                    $parser->compiler->appendCode($this->subtrees[ $last_subtree ]->data, $subtree->data);
+                    $parser->compiler->appendCode((string) $this->subtrees[ $last_subtree ]->data, (string) $subtree->data);
             }
         } else {
             $this->subtrees[] = $subtree;

src/ParseTree/Tag.php

@@ -62,9 +62,9 @@ class Tag extends Base
     public function assign_to_var(\Smarty\Parser\TemplateParser $parser)
     {
         $var = $parser->compiler->getNewPrefixVariable();
-        $tmp = $parser->compiler->appendCode('<?php ob_start();?>', $this->data);
+        $tmp = $parser->compiler->appendCode('<?php ob_start();?>', (string) $this->data);
         $tmp = $parser->compiler->appendCode($tmp, "<?php {$var}=ob_get_clean();?>");
-        $parser->compiler->appendPrefixCode((string) $tmp);
+        $parser->compiler->appendPrefixCode($tmp);
         return $var;
     }
 }

src/ParseTree/Template.php

@@ -114,7 +114,7 @@ class Template extends Base
                     break;
                 case 'tag':
                     foreach ($chunk['subtrees'] as $subtree) {
-                        $text = $parser->compiler->appendCode($text, $subtree->to_smarty_php($parser));
+                        $text = $parser->compiler->appendCode($text, (string) $subtree->to_smarty_php($parser));
                     }
                     $code .= $text;
                     break;

src/Parser/TemplateParser.y

@@ -19,7 +19,7 @@ use \Smarty\ParseTree\Code;
 use \Smarty\ParseTree\Dq;
 use \Smarty\ParseTree\DqContent;
 use \Smarty\ParseTree\Tag;
-
+use \Smarty\CompilerException;
 
 /**
 * Smarty Template Parser Class
@@ -306,7 +306,8 @@ smartytag(A)   ::= SIMPELOUTPUT(B). {
         $attributes[] = 'nocache';
         $var = $match[1];
     }
-    A = $this->compiler->compilePrintExpression($this->compiler->compileVariable('\''.$var.'\''), $attributes);
+    $this->compiler->triggerTagNoCache($var);
+    A = $this->compiler->compilePrintExpression('$_smarty_tpl->getValue(\''.$var.'\')', $attributes);
 }
 
 // simple tag like {name}
@@ -375,7 +376,7 @@ outattr(A) ::= output(B) attributes(C). {
     A = array(B,C);
 }
 
-output(A) ::= variable(B). {
+output(A) ::= variablevalue(B). {
     A = B;
 }
 output(A) ::= value(B). {
@@ -689,7 +690,8 @@ nullcoalescing(res)        ::= expr(v) QMARK QMARK expr(e2). {
 // ternary
 //
 ternary(res)        ::= expr(v) QMARK DOLLARID(e1) COLON  expr(e2). {
-    res = v.' ? '. $this->compiler->compileVariable('\''.substr(e1,1).'\'') . ' : '.e2;
+    $this->compiler->triggerTagNoCache(substr(e1,1));
+    res = v.' ? $_smarty_tpl->getValue(\''.substr(e1,1).'\') : '.e2;
 }
 
 ternary(res)        ::= expr(v) QMARK value(e1) COLON expr(e2). {
@@ -706,7 +708,7 @@ ternary(res)        ::= expr(v) QMARK COLON expr(e2). {
 }
 
                  // value
-value(res)       ::= variable(v). {
+value(res)       ::= variablevalue(v). {
     res = v;
 }
 
@@ -724,7 +726,7 @@ value(res)       ::= TYPECAST(t) value(v). {
     res = t.v;
 }
 
-value(res)       ::= variable(v) INCDEC(o). {
+value(res)       ::= variablevalue(v) INCDEC(o). {
     res = v.o;
 }
 
@@ -771,10 +773,10 @@ value(res)       ::= OPENP expr(e) CLOSEP. {
     res = '('. e .')';
 }
 
-value(res)        ::= variable(v1) INSTANCEOF(i) ns1(v2). {
+value(res)        ::= variablevalue(v1) INSTANCEOF(i) ns1(v2). {
       res = v1.i.v2;
 }
-value(res)        ::= variable(v1) INSTANCEOF(i) variable(v2). {
+value(res)        ::= variablevalue(v1) INSTANCEOF(i) variablevalue(v2). {
       res = v1.i.v2;
 }
 
@@ -797,7 +799,8 @@ value(res)    ::= varindexed(vi) DOUBLECOLON static_class_access(r). {
     if (vi['var'] === '\'smarty\'') {
         $this->compiler->appendPrefixCode("<?php {$prefixVar} = ". (new \Smarty\Compile\SpecialVariableCompiler())->compile(array(),$this->compiler,vi['smarty_internal_index']).';?>');
      } else {
-        $this->compiler->appendPrefixCode("<?php  {$prefixVar} = ". $this->compiler->compileVariable(vi['var']).vi['smarty_internal_index'].';?>');
+        $this->compiler->triggerTagNoCache(vi['var']);
+        $this->compiler->appendPrefixCode("<?php  {$prefixVar} = \$_smarty_tpl->getValue(" . vi['var'] . ')'.vi['smarty_internal_index'].';?>');
     }
     res = $prefixVar .'::'.r[0].r[1];
 }
@@ -805,7 +808,7 @@ value(res)    ::= varindexed(vi) DOUBLECOLON static_class_access(r). {
                   // Smarty tag
 value(res)       ::= smartytag(st). {
     $prefixVar = $this->compiler->getNewPrefixVariable();
-    $tmp = $this->compiler->appendCode('<?php ob_start();?>', st);
+    $tmp = $this->compiler->appendCode('<?php ob_start();?>', (string) st);
     $this->compiler->appendPrefixCode($this->compiler->appendCode($tmp, "<?php {$prefixVar} = ob_get_clean();?>"));
     res = $prefixVar;
 }
@@ -847,54 +850,88 @@ ns1(res)           ::= NAMESPACE(i). {
     }
 
 
+// variable lists
 
+// multiple variables
+variablelist(res)       ::= variablelist(l) COMMA variable(v). {
+    res = array_merge(l,array(v));
+}
+
+variablelist(res)       ::= variablelist(l) COMMA expr(e). {
+    res = array_merge(l,array(e));
+}
+
+// single variable
+variablelist(res)       ::= variable(v). {
+    res = array(v);
+}
+
+// single expression
+variablelist(res)       ::= expr(e). {
+    res = array(e);
+}
+
+// no variable
+variablelist(res)       ::= . {
+    res = array();
+}
 
 //
 // variables 
 //
                   // Smarty variable (optional array)
 variable(res)    ::= DOLLARID(i). {
-   res = $this->compiler->compileVariable('\''.substr(i,1).'\'');
+   $this->compiler->triggerTagNoCache(substr(i,1));
+   res = array('$_smarty_tpl->hasVariable(\''.substr(i,1).'\')','$_smarty_tpl->getValue(\''.substr(i,1).'\')');
 }
 variable(res)    ::= varindexed(vi). {
     if (vi['var'] === '\'smarty\'') {
         $smarty_var = (new \Smarty\Compile\SpecialVariableCompiler())->compile(array(),$this->compiler,vi['smarty_internal_index']);
-        res = $smarty_var;
+        res = array('true', $smarty_var);
     } else {
         // used for array reset,next,prev,end,current 
         $this->last_variable = vi['var'];
         $this->last_index = vi['smarty_internal_index'];
-        res = $this->compiler->compileVariable(vi['var']).vi['smarty_internal_index'];
+        $this->compiler->triggerTagNoCache(vi['var']);
+        res = array('true', '$_smarty_tpl->getValue(' . vi['var'] . ')'.vi['smarty_internal_index']);
     }
 }
 
                   // variable with property
 variable(res)    ::= varvar(v) AT ID(p). {
-    res = '$_smarty_tpl->getVariable('. v .')->'.p;
+    res = array('true', '$_smarty_tpl->getVariable('. v .')->'.p);
 }
 
                   // object
 variable(res)    ::= object(o). {
-    res = o;
+    res = array('true', o);
 }
 
                   // config variable
-variable(res)    ::= HATCH ID(i) HATCH. {
+configvariable(res)    ::= HATCH ID(i) HATCH. {
     res = $this->compiler->compileConfigVariable('\'' . i . '\'');
 }
 
-variable(res)    ::= HATCH ID(i) HATCH arrayindex(a). {
+configvariable(res)    ::= HATCH ID(i) HATCH arrayindex(a). {
     res = '(is_array($tmp = ' . $this->compiler->compileConfigVariable('\'' . i . '\'') . ') ? $tmp'.a.' :null)';
 }
 
-variable(res)    ::= HATCH variable(v) HATCH. {
+configvariable(res)    ::= HATCH variablevalue(v) HATCH. {
     res = $this->compiler->compileConfigVariable(v);
 }
 
-variable(res)    ::= HATCH variable(v) HATCH arrayindex(a). {
+configvariable(res)    ::= HATCH variablevalue(v) HATCH arrayindex(a). {
     res = '(is_array($tmp = ' . $this->compiler->compileConfigVariable(v) . ') ? $tmp'.a.' : null)';
 }
 
+variablevalue(res)    ::= variable(v). {
+    res = v[1];
+}
+
+variablevalue(res)    ::= configvariable(v). {
+    res = v;
+}
+
 varindexed(res)  ::= DOLLARID(i) arrayindex(a). {
     res = array('var'=>'\''.substr(i,1).'\'', 'smarty_internal_index'=>a);
 }
@@ -918,14 +955,17 @@ arrayindex        ::= . {
 // single index definition
                     // Smarty2 style index 
 indexdef(res)    ::= DOT DOLLARID(i).  {
-    res = '['.$this->compiler->compileVariable('\''.substr(i,1).'\'').']';
+    $this->compiler->triggerTagNoCache(substr(i,1));
+    res = '[$_smarty_tpl->getValue(\''.substr(i,1).'\')]';
 }
 indexdef(res)    ::= DOT varvar(v).  {
-    res = '['.$this->compiler->compileVariable(v).']';
+    $this->compiler->triggerTagNoCache(v);
+    res = '[$_smarty_tpl->getValue(' . v . ')]';
 }
 
 indexdef(res)    ::= DOT varvar(v) AT ID(p). {
-    res = '['.$this->compiler->compileVariable(v).'->'.p.']';
+    $this->compiler->triggerTagNoCache(v);
+    res = '[$_smarty_tpl->getValue(' . v . ')->'.p.']';
 }
 
 indexdef(res)   ::= DOT ID(i). {
@@ -956,9 +996,10 @@ indexdef(res)   ::= OPENB INTEGER(n) CLOSEB. {
     res = '['.n.']';
 }
 indexdef(res)   ::= OPENB DOLLARID(i) CLOSEB. {
-    res = '['.$this->compiler->compileVariable('\''.substr(i,1).'\'').']';
+    $this->compiler->triggerTagNoCache(substr(i,1));
+    res = '[$_smarty_tpl->getValue(\''.substr(i,1).'\')]';
 }
-indexdef(res)   ::= OPENB variable(v) CLOSEB. {
+indexdef(res)   ::= OPENB variablevalue(v) CLOSEB. {
     res = '['.v.']';
 }
 indexdef(res)   ::= OPENB value(v) CLOSEB. {
@@ -1000,7 +1041,8 @@ varvarele(res)   ::= ID(s). {
 }
 varvarele(res)   ::= SIMPELOUTPUT(i). {
     $var = trim(substr(i, $this->compiler->getLdelLength(), -$this->compiler->getRdelLength()), ' $');
-    res = $this->compiler->compileVariable('\''.$var.'\'');
+    $this->compiler->triggerTagNoCache($var);
+    res = '$_smarty_tpl->getValue(\''.$var.'\')';
 }
 
                     // variable sections of element
@@ -1015,7 +1057,8 @@ object(res)    ::= varindexed(vi) objectchain(oc). {
     if (vi['var'] === '\'smarty\'') {
         res = (new \Smarty\Compile\SpecialVariableCompiler())->compile(array(),$this->compiler,vi['smarty_internal_index']).oc;
     } else {
-        res = $this->compiler->compileVariable(vi['var']).vi['smarty_internal_index'].oc;
+        $this->compiler->triggerTagNoCache(vi['var']);
+        res = '$_smarty_tpl->getValue(' . vi['var'] . ')'.vi['smarty_internal_index'].oc;
     }
 }
 
@@ -1041,7 +1084,8 @@ objectelement(res)::= PTR varvar(v) arrayindex(a). {
     if ($this->security) {
         $this->compiler->trigger_template_error (self::ERR2);
     }
-    res = '->{'.$this->compiler->compileVariable(v).a.'}';
+    $this->compiler->triggerTagNoCache(v);
+    res = '->{$_smarty_tpl->getValue(' . v . ')'.a.'}';
 }
 
 objectelement(res)::= PTR LDEL expr(e) RDEL arrayindex(a). {
@@ -1067,8 +1111,41 @@ objectelement(res)::= PTR method(f).  {
 //
 // function
 //
-function(res)     ::= ns1(f) OPENP params(p) CLOSEP. {
-    res = $this->compiler->compileModifierInExpression(f, p);
+function(res)     ::= ns1(f) OPENP variablelist(v) CLOSEP. {
+
+    if (f == 'isset') {
+        res = '(true';
+        if (count(v) == 0) {
+            throw new CompilerException("Invalid number of arguments for isset. isset expects at least one parameter.");
+        }
+        foreach (v as $value) {
+            if (is_array($value)) {
+                res .= ' && (' . $value[0] . ' && null !== (' . $value[1] . ' ?? null))';
+            } else {
+                res .= ' && (' . $value . ' !== null)';
+            }
+        }
+        res .= ')';
+    } elseif (f == 'empty') {
+        if (count(v) != 1) {
+            throw new CompilerException("Invalid number of arguments for empty. empty expects at exactly one parameter.");
+        }
+        if (is_array(v[0])) {
+            res .= '( !' . v[0][0] . ' || empty(' . v[0][1] . '))';
+        } else {
+            res = 'false == ' . v[0];
+        }
+    } else {
+        $p = array();
+        foreach (v as $value) {
+            if (is_array($value)) {
+                $p[] = $value[1];
+            } else {
+                $p[] = $value;
+            }
+        }
+        res = $this->compiler->compileModifierInExpression(f, $p);
+    }
 }
 
 
@@ -1087,7 +1164,8 @@ method(res)     ::= DOLLARID(f) OPENP params(p) CLOSEP.  {
         $this->compiler->trigger_template_error (self::ERR2);
     }
     $prefixVar = $this->compiler->getNewPrefixVariable();
-    $this->compiler->appendPrefixCode("<?php {$prefixVar} = ".$this->compiler->compileVariable('\''.substr(f,1).'\'').';?>');
+    $this->compiler->triggerTagNoCache(substr(f,1));
+    $this->compiler->appendPrefixCode("<?php {$prefixVar} = \$_smarty_tpl->getValue('".substr(f,1).'\')'.';?>');
     res = $prefixVar .'('. implode(',',p) .')';
 }
 
@@ -1243,6 +1321,10 @@ arrayelements(res)   ::=  arrayelements(a1) COMMA arrayelement(a).  {
     res = a1.','.a;
 }
 
+arrayelements(res)   ::=  arrayelements(a) COMMA.  {
+    res = a.',';
+}
+
 arrayelements        ::=  .  {
     return;
 }
@@ -1282,7 +1364,7 @@ doublequoted(res)          ::= doublequotedcontent(o). {
     res = new Dq($this, o);
 }
 
-doublequotedcontent(res)           ::=  BACKTICK variable(v) BACKTICK. {
+doublequotedcontent(res)           ::=  BACKTICK variablevalue(v) BACKTICK. {
     res = new Code('(string)'.v);
 }
 
@@ -1294,7 +1376,7 @@ doublequotedcontent(res)           ::=  DOLLARID(i). {
     res = new Code('(string)$_smarty_tpl->getValue(\''. substr(i,1) .'\')');
 }
 
-doublequotedcontent(res)           ::=  LDEL variable(v) RDEL. {
+doublequotedcontent(res)           ::=  LDEL variablevalue(v) RDEL. {
     res = new Code('(string)'.v);
 }
 

src/Resource/BasePlugin.php

@@ -112,7 +112,7 @@ abstract class BasePlugin
 	 * @param Source $source source object
 	 * @param Template|null $_template template object
 	 */
-    abstract public function populate(Source $source, \Smarty\Template $_template = null);
+    abstract public function populate(Source $source, ?\Smarty\Template $_template = null);
 
     /**
      * populate Source Object with timestamp and exists from Resource

src/Resource/CustomPlugin.php

@@ -50,7 +50,7 @@ abstract class CustomPlugin extends BasePlugin {
 	 * @param Source $source source object
 	 * @param Template|null $_template template object
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 		$source->uid = sha1($source->type . ':' . $source->name);
 		$mtime = $this->fetchTimestamp($source->name);
 		if ($mtime !== null) {

src/Resource/ExtendsPlugin.php

@@ -23,7 +23,7 @@ class ExtendsPlugin extends BasePlugin
      *
      * @throws Exception
      */
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $uid = '';
         $sources = array();
@@ -93,7 +93,11 @@ class ExtendsPlugin extends BasePlugin
      */
     public function getBasename(Source $source)
     {
-        return str_replace(':', '.', basename($source->getResourceName()));
+        $search = array(':');
+        if (\Smarty\Smarty::$_IS_WINDOWS) {
+            $search = array(':', '|');
+        }
+        return str_replace($search, '.', basename($source->getResourceName()));
     }
 
     /*

src/Resource/FilePlugin.php

@@ -32,7 +32,7 @@ class FilePlugin extends BasePlugin {
 	 *
 	 * @throws Exception
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 
 		$source->uid = sha1(
 			$source->name . ($source->isConfig ? $source->getSmarty()->_joined_config_dir :
@@ -56,11 +56,14 @@ class FilePlugin extends BasePlugin {
 	 * @param Source $source source object
 	 */
 	public function populateTimestamp(Source $source) {
-		if (!$source->exists && $path = $this->getFilePath($source->name, $source->getSmarty(), $source->isConfig)) {
-			$source->timestamp = $source->exists = is_file($path);
+		$path = $this->getFilePath($source->name, $source->getSmarty(), $source->isConfig);
+		if (!$source->exists) {
+			$source->exists = ($path !== false && is_file($path));
 		}
-		if ($source->exists && $path) {
+		if ($source->exists && $path !== false) {
 			$source->timestamp = filemtime($path);
+		} else {
+			$source->timestamp = 0;
 		}
 	}
 

src/Resource/StreamPlugin.php

@@ -33,7 +33,7 @@ class StreamPlugin extends RecompiledPlugin {
 	 *
 	 * @return void
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 		$source->uid = false;
 		$source->content = $this->getContent($source);
 		$source->timestamp = $source->exists = !!$source->content;

src/Resource/StringEval.php

@@ -31,7 +31,7 @@ class StringEval extends RecompiledPlugin
      *
      * @return void
      */
-    public function populate(\Smarty\Template\Source $source, \Smarty\Template $_template = null)
+    public function populate(\Smarty\Template\Source $source, ?\Smarty\Template $_template = null)
     {
         $source->uid = sha1($source->name);
         $source->timestamp = $source->exists = true;

src/Resource/StringPlugin.php

@@ -31,7 +31,7 @@ class StringPlugin extends BasePlugin {
 	 *
 	 * @return void
 	 */
-	public function populate(Source $source, Template $_template = null) {
+	public function populate(Source $source, ?Template $_template = null) {
 		$source->uid = sha1($source->name);
 		$source->timestamp = $source->exists = true;
 	}

src/Runtime/DefaultPluginHandlerRuntime.php

@@ -26,7 +26,7 @@ class DefaultPluginHandlerRuntime {
 		$script = null;
 		$cacheable = null;
 
-		return (call_user_func_array(
+		return (\call_user_func_array(
 				$this->defaultPluginHandler,
 				[
 					$tag,
@@ -54,7 +54,7 @@ class DefaultPluginHandlerRuntime {
 		$script = null;
 		$cacheable = null;
 
-		if (call_user_func_array(
+		if (\call_user_func_array(
 				$this->defaultPluginHandler,
 				[
 					$tag,

src/Runtime/ForeachRuntime.php

@@ -116,22 +116,20 @@ class ForeachRuntime {
 	 *
 	 * @return int   the count for arrays and objects that implement countable, 1 for other objects that don't, and 0
 	 *               for empty elements
+	 * @throws \Exception
 	 */
-	public function count($value) {
-		if ($value instanceof IteratorAggregate) {
+	public function count($value): int
+	{
+		if ($value instanceof \IteratorAggregate) {
 			// Note: getIterator() returns a Traversable, not an Iterator
 			// thus rewind() and valid() methods may not be present
 			return iterator_count($value->getIterator());
-		} elseif ($value instanceof Iterator) {
-			return $value instanceof Generator ? 1 : iterator_count($value);
-		} elseif ($value instanceof Countable) {
+		} elseif ($value instanceof \Iterator) {
+			return $value instanceof \Generator ? 1 : iterator_count($value);
+		} elseif ($value instanceof \Countable) {
 			return count($value);
-		} elseif ($value instanceof PDOStatement) {
-			return $value->rowCount();
-		} elseif ($value instanceof Traversable) {
-			return iterator_count($value);
 		}
-		return count((array)$value);
+		return count((array) $value);
 	}
 
 	/**

src/Runtime/InheritanceRuntime.php

@@ -162,7 +162,7 @@ class InheritanceRuntime {
 	private function processBlock(
 		Template              $tpl,
 		\Smarty\Runtime\Block $block,
-		\Smarty\Runtime\Block $parent = null
+		?\Smarty\Runtime\Block $parent = null
 	) {
 		if ($block->hide && !isset($block->child)) {
 			return;

src/Smarty.php

@@ -40,7 +40,6 @@ use Smarty\Runtime\TplFunctionRuntime;
  * Smarty mailing list. Send a blank e-mail to
  * smarty-discussion-subscribe@googlegroups.com
  *
- * @link      https://www.smarty.net/
  * @author    Monte Ohrt <monte at ohrt dot com>
  * @author    Uwe Tews   <uwe dot tews at gmail dot com>
  * @author    Rodney Rehm
@@ -55,7 +54,7 @@ class Smarty extends \Smarty\TemplateBase {
 	/**
 	 * smarty version
 	 */
-	const SMARTY_VERSION = '5.0.1';
+	const SMARTY_VERSION = '5.5.0';
 
 	/**
 	 * define caching modes
@@ -536,8 +535,6 @@ class Smarty extends \Smarty\TemplateBase {
 	/**
 	 * Load an additional extension.
 	 *
-	 * @param Base $extension
-	 *
 	 * @return void
 	 */
 	public function addExtension(ExtensionInterface $extension) {
@@ -583,7 +580,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @param string|\Smarty\Security $security_class if a string is used, it must be class-name
 	 *
-	 * @return Smarty                 current Smarty instance for chaining
+	 * @return static                 current Smarty instance for chaining
 	 * @throws \Smarty\Exception
 	 */
 	public function enableSecurity($security_class = null) {
@@ -594,7 +591,7 @@ class Smarty extends \Smarty\TemplateBase {
 	/**
 	 * Disable security
 	 *
-	 * @return Smarty current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 */
 	public function disableSecurity() {
 		$this->security_policy = null;
@@ -608,7 +605,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string $key of the array element to assign the template dir to
 	 * @param bool $isConfig true for config_dir
 	 *
-	 * @return Smarty          current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 */
 	public function addTemplateDir($template_dir, $key = null, $isConfig = false) {
 		if ($isConfig) {
@@ -673,7 +670,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string|array $template_dir directory(s) of template sources
 	 * @param bool $isConfig true for config_dir
 	 *
-	 * @return Smarty current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 */
 	public function setTemplateDir($template_dir, $isConfig = false) {
 		if ($isConfig) {
@@ -687,13 +684,28 @@ class Smarty extends \Smarty\TemplateBase {
 		return $this;
 	}
 
+	/**
+	 * Adds a template directory before any existing directoires
+	 *
+	 * @param string $new_template_dir directory of template sources
+	 * @param bool $is_config true for config_dir
+	 *
+	 * @return static current Smarty instance for chaining
+	 */
+	public function prependTemplateDir($new_template_dir, $is_config = false) {
+		$current_template_dirs = $is_config ? $this->config_dir : $this->template_dir;
+		array_unshift($current_template_dirs, $new_template_dir);
+		$this->setTemplateDir($current_template_dirs, $is_config);
+		return $this;
+	}
+
 	/**
 	 * Add config directory(s)
 	 *
 	 * @param string|array $config_dir directory(s) of config sources
 	 * @param mixed $key key of the array element to assign the config dir to
 	 *
-	 * @return Smarty current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 */
 	public function addConfigDir($config_dir, $key = null) {
 		return $this->addTemplateDir($config_dir, $key, true);
@@ -715,7 +727,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @param $config_dir
 	 *
-	 * @return Smarty       current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 */
 	public function setConfigDir($config_dir) {
 		return $this->setTemplateDir($config_dir, true);
@@ -731,7 +743,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @return $this
 	 * @throws \Smarty\Exception
-	 * @link https://www.smarty.net/docs/en/api.register.plugin.tpl
 	 *
 	 * @api  Smarty::registerPlugin()
 	 */
@@ -758,7 +769,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string $name name of template tag
 	 *
 	 * @return array|null
-	 * @link https://www.smarty.net/docs/en/api.unregister.plugin.tpl
 	 *
 	 * @api  Smarty::unregisterPlugin()
 	 */
@@ -776,7 +786,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string $name name of template tag
 	 *
 	 * @return $this
-	 * @link https://www.smarty.net/docs/en/api.unregister.plugin.tpl
 	 *
 	 * @api  Smarty::unregisterPlugin()
 	 */
@@ -792,7 +801,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @param null|array|string $plugins_dir
 	 *
-	 * @return Smarty current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 * @deprecated since 5.0
 	 */
 	public function addPluginsDir($plugins_dir) {
@@ -825,7 +834,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @param string|array $plugins_dir directory(s) of plugins
 	 *
-	 * @return Smarty       current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 * @deprecated since 5.0
 	 */
 	public function setPluginsDir($plugins_dir) {
@@ -850,7 +859,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @return $this
 	 * @throws Exception              if $callback is not callable
-	 * @link https://www.smarty.net/docs/en/api.register.default.plugin.handler.tpl
 	 *
 	 * @api  Smarty::registerDefaultPluginHandler()
 	 *
@@ -887,7 +895,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @param string $compile_dir directory to store compiled templates in
 	 *
-	 * @return Smarty current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 */
 	public function setCompileDir($compile_dir) {
 		$this->_normalizeDir('compile_dir', $compile_dir);
@@ -913,7 +921,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @param string $cache_dir directory to store cached templates in
 	 *
-	 * @return Smarty current Smarty instance for chaining
+	 * @return static current Smarty instance for chaining
 	 */
 	public function setCacheDir($cache_dir) {
 		$this->_normalizeDir('cache_dir', $cache_dir);
@@ -1176,7 +1184,7 @@ class Smarty extends \Smarty\TemplateBase {
 	/**
 	 * Get Smarty object
 	 *
-	 * @return Smarty
+	 * @return static
 	 */
 	public function getSmarty() {
 		return $this;
@@ -1254,7 +1262,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @return int number of cache files deleted
 	 * @throws \Smarty\Exception
-	 * @link https://www.smarty.net/docs/en/api.clear.cache.tpl
 	 *
 	 * @api  Smarty::clearCache()
 	 */
@@ -1274,7 +1281,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string $type resource type
 	 *
 	 * @return int number of cache files deleted
-	 * @link https://www.smarty.net/docs/en/api.clear.all.cache.tpl
 	 *
 	 * @api  Smarty::clearAllCache()
 	 */
@@ -1291,7 +1297,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @return int number of template files deleted
 	 * @throws \Smarty\Exception
-	 * @link https://www.smarty.net/docs/en/api.clear.compiled.template.tpl
 	 *
 	 * @api  Smarty::clearCompiledTemplate()
 	 */
@@ -1805,7 +1810,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @return bool
 	 * @throws \Smarty\Exception
 	 * @api  Smarty::loadFilter()
-	 * @link https://www.smarty.net/docs/en/api.load.filter.tpl
 	 *
 	 * @deprecated since 5.0
 	 */
@@ -1853,11 +1857,10 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string $type filter type
 	 * @param string $name filter name
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws \Smarty\Exception
 	 * @api  Smarty::unloadFilter()
 	 *
-	 * @link https://www.smarty.net/docs/en/api.unload.filter.tpl
 	 *
 	 * @deprecated since 5.0
 	 */
@@ -1900,8 +1903,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string $name name of resource type
 	 * @param Base $resource_handler
 	 *
-	 * @return Smarty
-	 * @link https://www.smarty.net/docs/en/api.register.cacheresource.tpl
+	 * @return static
 	 *
 	 * @api  Smarty::registerCacheResource()
 	 *
@@ -1922,9 +1924,8 @@ class Smarty extends \Smarty\TemplateBase {
 	 *
 	 * @param                                                                 $name
 	 *
-	 * @return Smarty
+	 * @return static
 	 * @api  Smarty::unregisterCacheResource()
-	 * @link https://www.smarty.net/docs/en/api.unregister.cacheresource.tpl
 	 *
 	 * @deprecated since 5.0
 	 *
@@ -1956,9 +1957,8 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param callable $callback
 	 * @param string|null $name optional filter name
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws \Smarty\Exception
-	 * @link https://www.smarty.net/docs/en/api.register.filter.tpl
 	 *
 	 * @api  Smarty::registerFilter()
 	 */
@@ -2016,11 +2016,10 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param string $type filter type
 	 * @param callback|string $name the name previously used in ::registerFilter
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws \Smarty\Exception
 	 * @api  Smarty::unregisterFilter()
 	 *
-	 * @link https://www.smarty.net/docs/en/api.unregister.filter.tpl
 	 *
 	 */
 	public function unregisterFilter($type, $name) {
@@ -2054,7 +2053,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param array|string $modifiers modifier or list of modifiers
 	 *                                                                                   to add
 	 *
-	 * @return Smarty
+	 * @return static
 	 * @api Smarty::addDefaultModifiers()
 	 *
 	 */
@@ -2084,7 +2083,7 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @param array|string $modifiers modifier or list of modifiers
 	 *                                                                                   to set
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @api Smarty::setDefaultModifiers()
 	 *
 	 */
@@ -2203,7 +2202,6 @@ class Smarty extends \Smarty\TemplateBase {
 	 * @return bool cache status
 	 * @throws \Exception
 	 * @throws \Smarty\Exception
-	 * @link https://www.smarty.net/docs/en/api.is.cached.tpl
 	 *
 	 * @api  Smarty::isCached()
 	 */
@@ -2228,5 +2226,14 @@ class Smarty extends \Smarty\TemplateBase {
 		return $template;
 	}
 
+	/**
+	 * Sets if Smarty should check If-Modified-Since headers to determine cache validity.
+	 * @param bool $cache_modified_check
+	 * @return void
+	 */
+	public function setCacheModifiedCheck($cache_modified_check): void {
+		$this->cache_modified_check = (bool) $cache_modified_check;
+	}
+
 }
 

src/Template.php

@@ -115,7 +115,7 @@ class Template extends TemplateBase {
 	public function __construct(
 		$template_resource,
 		Smarty $smarty,
-		\Smarty\Data $_parent = null,
+		?\Smarty\Data $_parent = null,
 		$_cache_id = null,
 		$_compile_id = null,
 		$_caching = null,
@@ -248,7 +248,7 @@ class Template extends TemplateBase {
 		$caching,
 		$cache_lifetime,
 		array $extra_vars = [],
-		int $scope = null,
+		?int $scope = null,
 		?string $currentDir = null
 	) {
 
@@ -462,7 +462,7 @@ class Template extends TemplateBase {
 	 * @return string
 	 * @throws Exception
 	 */
-	public function createCodeFrame($content = '', $functions = '', $cache = false, \Smarty\Compiler\Template $compiler = null) {
+	public function createCodeFrame($content = '', $functions = '', $cache = false, ?\Smarty\Compiler\Template $compiler = null) {
 		return $this->getCodeFrameCompiler()->create($content, $functions, $cache, $compiler);
 	}
 
@@ -604,7 +604,6 @@ class Template extends TemplateBase {
 	 * @return bool cache status
 	 * @throws \Exception
 	 * @throws \Smarty\Exception
-	 * @link https://www.smarty.net/docs/en/api.is.cached.tpl
 	 *
 	 * @api  Smarty::isCached()
 	 */

src/Template/Compiled.php

@@ -136,7 +136,7 @@ class Compiled extends GeneratedPhpFile {
 		if ($this->exists && !$_smarty_tpl->getSmarty()->force_compile
 			&& !($_smarty_tpl->compile_check && $_smarty_tpl->getSource()->getTimeStamp() > $this->getTimeStamp())
 		) {
-			$this->loadCompiledTemplate($_smarty_tpl);
+			$this->loadCompiledTemplate($_smarty_tpl, false);
 		}
 
 		if (!$this->isValid) {
@@ -241,16 +241,19 @@ class Compiled extends GeneratedPhpFile {
 	 * HHVM requires a workaround because of a PHP incompatibility
 	 *
 	 * @param Template $_smarty_tpl do not change/remove variable name, is used by compiled template
+	 * @param bool $invalidateCachedFiles forces a revalidation of the file in opcache or apc cache (if available)
 	 *
 	 */
-	private function loadCompiledTemplate(Template $_smarty_tpl) {
-
-		if (function_exists('opcache_invalidate')
-			&& (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)
-		) {
-			opcache_invalidate($this->filepath, true);
-		} elseif (function_exists('apc_compile_file')) {
-			apc_compile_file($this->filepath);
+	private function loadCompiledTemplate(Template $_smarty_tpl, bool $invalidateCachedFiles = true) {
+        
+		if ($invalidateCachedFiles) {
+			if (function_exists('opcache_invalidate')
+				 && (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)
+			) {
+				opcache_invalidate($this->filepath, true);
+			} elseif (function_exists('apc_compile_file')) {
+				apc_compile_file($this->filepath);
+			}
 		}
 		if (defined('HHVM_VERSION')) {
 			eval('?>' . file_get_contents($this->filepath));

src/Template/Source.php

@@ -134,9 +134,9 @@ class Source {
 	 * @throws Exception
 	 */
 	public static function load(
-		Template $_template = null,
-		Smarty   $smarty = null,
-		         $template_resource = null
+		?Template $_template = null,
+		?Smarty   $smarty = null,
+		          $template_resource = null
 	) {
 		if ($_template) {
 			$smarty = $_template->getSmarty();
@@ -203,7 +203,7 @@ class Source {
 	 */
 	public function _getDefaultTemplate($default_handler) {
 		$_content = $_timestamp = null;
-		$_return = call_user_func_array(
+		$_return = \call_user_func_array(
 			$default_handler,
 			[$this->type, $this->name, &$_content, &$_timestamp, $this->smarty]
 		);

src/TemplateBase.php

@@ -73,9 +73,8 @@ abstract class TemplateBase extends Data {
 	 * @param bool $format smarty argument format, else traditional
 	 * @param array $block_methods list of block-methods
 	 *
-	 * @return \Smarty|\Smarty\Template
+	 * @return static
 	 * @throws \Smarty\Exception
-	 * @link https://www.smarty.net/docs/en/api.register.object.tpl
 	 *
 	 * @api  Smarty::registerObject()
 	 */
@@ -114,9 +113,8 @@ abstract class TemplateBase extends Data {
 	 *
 	 * @param string $object_name name of object
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @api  Smarty::unregisterObject()
-	 * @link https://www.smarty.net/docs/en/api.unregister.object.tpl
 	 *
 	 */
 	public function unregisterObject($object_name) {
@@ -179,10 +177,9 @@ abstract class TemplateBase extends Data {
 	 * @return Data data object
 	 * @throws Exception
 	 * @api  Smarty::createData()
-	 * @link https://www.smarty.net/docs/en/api.create.data.tpl
 	 *
 	 */
-	public function createData(Data $parent = null, $name = null) {
+	public function createData(?Data $parent = null, $name = null) {
 		/* @var Smarty $smarty */
 		$smarty = $this->getSmarty();
 		$dataObj = new Data($parent, $smarty, $name);
@@ -222,7 +219,6 @@ abstract class TemplateBase extends Data {
 	 *
 	 * @return object
 	 * @throws \Smarty\Exception if no such object is found
-	 * @link https://www.smarty.net/docs/en/api.get.registered.object.tpl
 	 *
 	 * @api  Smarty::getRegisteredObject()
 	 */
@@ -255,7 +251,7 @@ abstract class TemplateBase extends Data {
 	 * @param array|string $literals literal or list of literals
 	 *                                                                                  to addto add
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws \Smarty\Exception
 	 * @api Smarty::addLiterals()
 	 *
@@ -273,7 +269,7 @@ abstract class TemplateBase extends Data {
 	 * @param array|string $literals literal or list of literals
 	 *                                                                                  to setto set
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws \Smarty\Exception
 	 * @api Smarty::setLiterals()
 	 *
@@ -316,10 +312,9 @@ abstract class TemplateBase extends Data {
 	 * @param string $class_impl the referenced PHP class to
 	 *                                                                                    register
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws \Smarty\Exception
 	 * @api  Smarty::registerClass()
-	 * @link https://www.smarty.net/docs/en/api.register.class.tpl
 	 *
 	 */
 	public function registerClass($class_name, $class_impl) {
@@ -338,7 +333,7 @@ abstract class TemplateBase extends Data {
 	 *
 	 * @param callable $callback class/method name
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws Exception              if $callback is not callable
 	 * @api Smarty::registerDefaultConfigHandler()
 	 *
@@ -358,7 +353,7 @@ abstract class TemplateBase extends Data {
 	 *
 	 * @param callable $callback class/method name
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws Exception              if $callback is not callable
 	 * @api Smarty::registerDefaultTemplateHandler()
 	 *
@@ -379,8 +374,7 @@ abstract class TemplateBase extends Data {
 	 * @param string $name name of resource type
 	 * @param \Smarty\Resource\BasePlugin $resource_handler instance of Smarty\Resource\BasePlugin
 	 *
-	 * @return \Smarty\Smarty|\Smarty\Template
-	 * @link https://www.smarty.net/docs/en/api.register.resource.tpl
+	 * @return static
 	 *
 	 * @api  Smarty::registerResource()
 	 */
@@ -395,9 +389,8 @@ abstract class TemplateBase extends Data {
 	 *
 	 * @param string $type name of resource type
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @api  Smarty::unregisterResource()
-	 * @link https://www.smarty.net/docs/en/api.unregister.resource.tpl
 	 *
 	 */
 	public function unregisterResource($type) {
@@ -413,7 +406,7 @@ abstract class TemplateBase extends Data {
 	 *
 	 * @param string $tpl_name
 	 *
-	 * @return TemplateBase
+	 * @return static
 	 * @throws Exception if file is not readable
 	 * @api Smarty::setDebugTemplate()
 	 *

src/debug.tpl

@@ -108,7 +108,7 @@
     </head>
     <body>
 
-    <h1>Smarty {\Smarty\Smarty::SMARTY_VERSION} Debug Console
+    <h1>Smarty {$smarty.version} Debug Console
         -  {if isset($template_name)}{$template_name|debug_print_var nofilter} {/if}{if !empty($template_data)}Total Time {$execution_time|string_format:"%.5f"}{/if}</h1>
 
     {if !empty($template_data)}
@@ -144,6 +144,7 @@
                         {$vars['attributes']|debug_print_var nofilter}
                     {/if}
                 </td>
+            </tr>
          {/foreach}
     </table>
 

tests/PHPUnit_Smarty.php

@@ -64,7 +64,7 @@ class PHPUnit_Smarty extends PHPUnit\Framework\TestCase
      */
     public static function setUpBeforeClass(): void
     {
-        error_reporting(E_ALL & ~E_STRICT & ~E_DEPRECATED & ~E_USER_DEPRECATED);
+        error_reporting(E_ALL & ~E_DEPRECATED & ~E_USER_DEPRECATED);
         self::$init = true;
         self::$pluginsdir =self::getSmartyPluginsDir();
     }

tests/UnitTests/A_2/UndefinedTemplateVar/UndefinedTemplateVarTest.php

@@ -65,15 +65,34 @@ class UndefinedTemplateVarTest extends PHPUnit_Smarty
      */
     public function testError()
     {
-		$this->smarty->error_unassigned = true;
+        $this->smarty->error_unassigned = true;
         $this->expectException(PHPUnit\Framework\Error\Error::class);
-		$this->expectExceptionMessage('Undefined ');
+        $this->expectExceptionMessage('Undefined ');
         $e1 = error_reporting();
         $this->assertEquals('undefined = ', $this->smarty->fetch('001_main.tpl'));
         $e2 = error_reporting();
         $this->assertEquals($e1, $e2);
     }
 
+    public function testNoError()
+    {
+        $this->smarty->error_unassigned = false;
+        $e1 = error_reporting();
+        $this->assertEquals('undefined = ', $this->smarty->fetch('001_main.tpl'));
+        $e2 = error_reporting();
+        $this->assertEquals($e1, $e2);
+    }
+
+    public function testNoErrorForIssetOrEmpty()
+    {
+        $this->smarty->error_unassigned = true;
+        $e1 = error_reporting();
+        $this->assertEquals('undefined = ', $this->smarty->fetch('001_isset.tpl'));
+        $this->assertEquals('undefined = ', $this->smarty->fetch('001_empty.tpl'));
+        $e2 = error_reporting();
+        $this->assertEquals($e1, $e2);
+    }
+
     public function testUndefinedSimpleVar() {
         $this->smarty->muteUndefinedOrNullWarnings();
         $tpl = $this->smarty->createTemplate('string:a{if $undef}def{/if}b');
@@ -133,30 +152,30 @@ class UndefinedTemplateVarTest extends PHPUnit_Smarty
     }
 
 
-	public function testDereferenceOnNull() {
-		$this->smarty->setErrorReporting(E_ALL & ~E_WARNING & ~E_NOTICE);
-		$this->smarty->muteUndefinedOrNullWarnings();
-		$tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
-		$this->smarty->assign('object', null);
-		$this->assertEquals("ab", $this->smarty->fetch($tpl));
-	}
+    public function testDereferenceOnNull() {
+        $this->smarty->setErrorReporting(E_ALL & ~E_WARNING & ~E_NOTICE);
+        $this->smarty->muteUndefinedOrNullWarnings();
+        $tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
+        $this->smarty->assign('object', null);
+        $this->assertEquals("ab", $this->smarty->fetch($tpl));
+    }
 
 
-	public function testDereferenceOnBool() {
-		$this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
-		$this->smarty->muteUndefinedOrNullWarnings();
-		$tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
-		$this->smarty->assign('object', false);
-		$this->assertEquals("ab", $this->smarty->fetch($tpl));
-	}
+    public function testDereferenceOnBool() {
+        $this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
+        $this->smarty->muteUndefinedOrNullWarnings();
+        $tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
+        $this->smarty->assign('object', false);
+        $this->assertEquals("ab", $this->smarty->fetch($tpl));
+    }
 
 
-	public function testDereferenceOnString() {
-		$this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
-		$this->smarty->muteUndefinedOrNullWarnings();
-		$tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
-		$this->smarty->assign('object', 'xyz');
-		$this->assertEquals("ab", $this->smarty->fetch($tpl));
-	}
+    public function testDereferenceOnString() {
+        $this->smarty->setErrorReporting(E_ALL & ~E_NOTICE);
+        $this->smarty->muteUndefinedOrNullWarnings();
+        $tpl = $this->smarty->createTemplate('string:a{if $object->myprop}def{/if}b');
+        $this->smarty->assign('object', 'xyz');
+        $this->assertEquals("ab", $this->smarty->fetch($tpl));
+    }
 
 }

tests/UnitTests/A_2/UndefinedTemplateVar/templates/001_empty.tpl

@@ -0,0 +1 @@
+undefined = {if empty($foo)}{/if}

tests/UnitTests/A_2/UndefinedTemplateVar/templates/001_isset.tpl

@@ -0,0 +1 @@
+undefined = {if isset($foo)}{/if}

tests/UnitTests/A_Core/AutoEscape/AutoEscapeTest.php

@@ -61,4 +61,68 @@ class AutoEscapeTest extends PHPUnit_Smarty
         $this->assertEquals("<p>hi</p>", $this->smarty->fetch($tpl));
     }
 
+    /**
+     * test autoescape + raw modifier
+     */
+    public function testAutoEscapeRaw() {
+        $tpl = $this->smarty->createTemplate('eval:{$foo|raw}');
+        $tpl->assign('foo', '<a@b.c>');
+        $this->assertEquals("<a@b.c>", $this->smarty->fetch($tpl));
+    }
+
+    /**
+     * test autoescape + escape modifier = no double-escaping
+     */
+    public function testAutoEscapeNoDoubleEscape() {
+        $tpl = $this->smarty->createTemplate('eval:{$foo|escape}');
+        $tpl->assign('foo', '<a@b.c>');
+        $this->assertEquals("&lt;a@b.c&gt;", $this->smarty->fetch($tpl));
+    }
+
+    /**
+     * test autoescape + escape modifier = force double-escaping
+     */
+    public function testAutoEscapeForceDoubleEscape() {
+        $tpl = $this->smarty->createTemplate('eval:{$foo|escape:\'force\'}');
+        $tpl->assign('foo', '<a@b.c>');
+        $this->assertEquals("&amp;lt;a@b.c&amp;gt;", $this->smarty->fetch($tpl));
+    }
+
+    /**
+     * test autoescape + escape modifier = special escape
+     */
+    public function testAutoEscapeSpecialEscape() {
+        $tpl = $this->smarty->createTemplate('eval:{$foo|escape:\'url\'}');
+        $tpl->assign('foo', 'aa bb');
+        $this->assertEquals("aa%20bb", $this->smarty->fetch($tpl));
+    }
+
+    /**
+     * test autoescape + escape modifier = special escape
+     */
+    public function testAutoEscapeSpecialEscape2() {
+        $tpl = $this->smarty->createTemplate('eval:{$foo|escape:\'url\'}');
+        $tpl->assign('foo', '<BR>');
+        $this->assertEquals("%3CBR%3E", $this->smarty->fetch($tpl));
+    }
+
+    /**
+     * test autoescape + escape modifier = special escape
+     */
+    public function testAutoEscapeSpecialEscape3() {
+        $tpl = $this->smarty->createTemplate('eval:{$foo|escape:\'htmlall\'}');
+        $tpl->assign('foo', '<BR>');
+        $this->assertEquals("&lt;BR&gt;", $this->smarty->fetch($tpl));
+    }
+
+
+    /**
+     * test autoescape + escape modifier = special escape
+     */
+    public function testAutoEscapeSpecialEscape4() {
+        $tpl = $this->smarty->createTemplate('eval:{$foo|escape:\'javascript\'}');
+        $tpl->assign('foo', '<\'');
+        $this->assertEquals("<\\'", $this->smarty->fetch($tpl));
+    }
+
 }

tests/UnitTests/CacheResourceTests/File/CacheResourceFileTest.php

@@ -14,10 +14,13 @@ include_once __DIR__ . '/../_shared/CacheResourceTestCommon.php';
 class CacheResourceFileTest extends CacheResourceTestCommon
 {
 
+    private $directorySeparator;
+
     public function setUp(): void
     {
         $this->setUpSmarty(__DIR__);
         parent::setUp();
+        $this->directorySeparator = preg_quote(DIRECTORY_SEPARATOR, '/');
         $this->smarty->setCachingType('filetest');
     }
 
@@ -38,7 +41,8 @@ class CacheResourceFileTest extends CacheResourceTestCommon
         $this->smarty->setUseSubDirs(true);
         $tpl = $this->smarty->createTemplate('helloworld.tpl');
 
-		$this->assertRegExp('/.*\/([a-f0-9]{2}\/){3}.*.php/', $tpl->getCached()->filepath);
+        $pattern = '/.*' . $this->directorySeparator . '([a-f0-9]{2}' . $this->directorySeparator . '){3}.*\.php/';
+        $this->assertRegExp($pattern, $tpl->getCached()->filepath);
     }
 
     /**
@@ -51,7 +55,8 @@ class CacheResourceFileTest extends CacheResourceTestCommon
         $this->smarty->setUseSubDirs(true);
         $tpl = $this->smarty->createTemplate('helloworld.tpl', 'foo|bar');
 
-	    $this->assertRegExp('/.*\/foo\/bar\/([a-f0-9]{2}\/){3}.*.php/', $tpl->getCached()->filepath);
+        $pattern = '/.*' . $this->directorySeparator . 'foo' . $this->directorySeparator . 'bar' . $this->directorySeparator . '([a-f0-9]{2}' . $this->directorySeparator . '){3}.*\.php/';
+        $this->assertRegExp($pattern, $tpl->getCached()->filepath);
     }
 
     /**
@@ -63,7 +68,9 @@ class CacheResourceFileTest extends CacheResourceTestCommon
         $this->smarty->cache_lifetime = 1000;
         $this->smarty->setUseSubDirs(true);
         $tpl = $this->smarty->createTemplate('helloworld.tpl', null, 'blar');
-	    $this->assertRegExp('/.*\/blar\/([a-f0-9]{2}\/){3}.*.php/', $tpl->getCached()->filepath);
+
+        $pattern = '/.*' . $this->directorySeparator . 'blar' . $this->directorySeparator . '([a-f0-9]{2}' . $this->directorySeparator . '){3}.*\.php/';
+        $this->assertRegExp($pattern, $tpl->getCached()->filepath);
     }
 
     /**
@@ -75,7 +82,9 @@ class CacheResourceFileTest extends CacheResourceTestCommon
         $this->smarty->cache_lifetime = 1000;
         $this->smarty->setUseSubDirs(true);
         $tpl = $this->smarty->createTemplate('helloworld.tpl', 'foo|bar', 'blar');
-	    $this->assertRegExp('/.*\/foo\/bar\/blar\\/([a-f0-9]{2}\/){3}.*.php/', $tpl->getCached()->filepath);
+
+        $pattern = '/.*' . $this->directorySeparator . 'foo' . $this->directorySeparator . 'bar' . $this->directorySeparator . 'blar' . $this->directorySeparator . '([a-f0-9]{2}' . $this->directorySeparator . '){3}.*\.php/';
+        $this->assertRegExp($pattern, $tpl->getCached()->filepath);
     }
 
     /**

tests/UnitTests/CacheResourceTests/_shared/PHPunitplugins/resource.filetest.php

@@ -12,7 +12,7 @@ class Smarty_Resource_FiletestPlugin extends FilePlugin
      * @param Source   $source    source object
      * @param Template $_template template object
      */
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         parent::populate($source, $_template);
         if ($source->exists) {

tests/UnitTests/ResourceTests/Custom/Ambiguous/PHPunitplugins/resource.ambiguous.php

@@ -34,7 +34,7 @@ class Smarty_Resource_AmbiguousPlugin extends FilePlugin
      * @param Source   $source    source object
      * @param Template $_template template object
      */
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $segment = '';
         if ($this->segment) {

tests/UnitTests/ResourceTests/FileIndexed/FileResourceIndexedTest.php

@@ -91,4 +91,13 @@ class FileResourceIndexedTest extends PHPUnit_Smarty
 
 	    $this->assertNotEquals($tpl->getCached()->filepath, $tpl2->getCached()->filepath);
     }
+
+	public function testPrependTemplatePath()
+	{
+		$this->smarty->setTemplateDir(__DIR__ . '/templates');
+		$this->smarty->prependTemplateDir(__DIR__ . '/templates_4');
+		$tpl = $this->smarty->createTemplate('dirname.tpl');
+		$this->assertEquals('templates_4', $this->smarty->fetch($tpl));
+	}
+
 }

tests/UnitTests/ResourceTests/ResourcePlugins/PHPunitplugins/resource.db.php

@@ -16,7 +16,7 @@ use Smarty\Template\Source;
 
 class Smarty_Resource_Db extends RecompiledPlugin {
 
-    public function populate(Source $source, Template $_template = null) {
+    public function populate(Source $source, ?Template $_template = null) {
         $source->uid = sha1($source->resource);
         $source->timestamp = 1000000000;
         $source->exists = true;

tests/UnitTests/ResourceTests/ResourcePlugins/PHPunitplugins/resource.db2.php

@@ -16,7 +16,7 @@ use Smarty\Template\Source;
 
 class Smarty_Resource_Db2 extends RecompiledPlugin
 {
-    public function populate(Source $source, Template $_template = null)
+    public function populate(Source $source, ?Template $_template = null)
     {
         $source->uid = sha1($source->resource);
         $source->timestamp = 0;