Add ability to set default syntax from Latte\Engine

src/Latte/Compiler/TagLexer.php

@@ -120,7 +120,7 @@ private function tokenizeCode(): void
 			(?<Php_NameFullyQualified>  \\ (?&label) ( \\ (?&label) )*  )|
 			(?<Php_NameQualified>  (?&label) ( \\ (?&label) )+  )|
 			(?<Php_IdentifierFollowed>  (?&label)  (?= [ \t\r\n]* [(&=] )  )|
-			(?<Php_Identifier>  (?&label)((--?|\.)[a-zA-Z0-9_\x80-\xff]+)*  )|
+			(?<Php_Identifier>  (?&label)((--?|\.|\+)[a-zA-Z0-9_\x80-\xff]+)*  )|
 			(
 				(
 					(?<Php_ObjectOperator>  ->  )|

src/Latte/Compiler/TemplateParser.php

@@ -408,6 +408,16 @@ public function getContentType(): string
 		return $this->contentType;
 	}
 
+
+	/**
+	 * Sets tag syntax for lexer
+	 */
+	public function setSyntax(?string $syntax): static
+	{
+		$this->lexer->setSyntax($syntax);
+		return $this;
+	}
+
 
 	/** @internal */
 	public function getStream(): TokenStream

src/Latte/Engine.php

@@ -51,6 +51,7 @@ class Engine
 	private ?string $phpBinary = null;
 	private ?string $cacheKey;
 	private ?string $locale = null;
+	private ?string $defaultSyntax = null;
 
 
 	public function __construct()
@@ -148,6 +149,9 @@ public function compile(string $name): string
 	public function parse(string $template): TemplateNode
 	{
 		$parser = new Compiler\TemplateParser;
+		if ($this->defaultSyntax) {
+			$parser->setSyntax($this->defaultSyntax);
+		}
 		$parser->strict = $this->strictParsing;
 
 		foreach ($this->extensions as $extension) {
@@ -565,6 +569,16 @@ public function isStrictParsing(): bool
 		return $this->strictParsing;
 	}
 
+
+	/**
+	 * Sets default tag syntax
+	 */
+	public function setDefaultSyntax(?string $defaultSyntax): static
+	{
+		$this->defaultSyntax = $defaultSyntax;
+		return $this;
+	}
+
 
 	/**
 	 * Sets the locale. It uses the same identifiers as the PHP intl extension.

tests/phpPrint/unquotedStrings.phpt

@@ -18,8 +18,8 @@ $test = <<<'XX'
 	a-b-c,
 	a--b--c,
 
-	/* dots */
-	a.b,
+	/* special chars */
+	a.b+c,
 	a . b,
 
 	/* usage */
@@ -43,7 +43,7 @@ __halt_compiler();
 MD5,
 'a-b-c',
 'a--b--c',
-'a.b',
+'a.b+c',
 'a' . 'b',
 'a-b.c-d',
 a.b(),