Support : and ! characters in CSS class names

Fixes #224

CHANGELOG.textile

@@ -4,6 +4,8 @@ Here's a summary of changes in each release. The list doesn't include some small
 
 h2. Version 4.1.0 - upcoming
 
+* Support @:@ and @!@ characters in CSS class names (closes "#224":https://github.com/textile/php-textile/issues/224).
+
 h2. "Version 4.0.0 - 2022/12/03":https://github.com/textile/php-textile/releases/tag/v4.0.0
 
 * HTML void tags render a self-closing slash based on the given document type. If @Parser::setDocumentType()@ is given @Parser::DOCTYPE_XHTML@, self-closing tags are used, otherwise not.

LICENSE

@@ -11,7 +11,7 @@ Additions and fixes Copyright (c) 2010    Stef Dawson       https://stefdawson.c
 Additions and fixes Copyright (c) 2010-17 Netcarver         https://github.com/netcarver
 Additions and fixes Copyright (c) 2011    Jeff Soo          http://ipsedixit.net/
 Additions and fixes Copyright (c) 2012    Robert Wetzlmayr  https://wetzlmayr.com/
-Additions and fixes Copyright (c) 2012-19 Jukka Svahn       https://rahforum.biz/
+Additions and fixes Copyright (c) 2012-24 Jukka Svahn       https://rahforum.biz/
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

src/Netcarver/Textile/Parser.php

@@ -2527,14 +2527,14 @@ protected function parseAttribsToArray($in, $element = '', $include_id = true, $
         }
 
         if (preg_match("/\(([^()]+)\)/U", $matched, $cls)) {
-            $class_regex = "/^([-a-zA-Z 0-9_\.\/\[\]]*)$/";
+            $class_regex = "/^([-a-zA-Z 0-9_\.\/\[\]:!]*)$/";
 
             // Consume entire class block -- valid or invalid.
             $matched = str_replace($cls[0], '', $matched);
 
             // Only allow a restricted subset of the CSS standard characters for classes/ids.
             // No encoding markers allowed.
-            if (preg_match("/\(([-a-zA-Z 0-9_\/\[\]\.\:\#]+)\)/U", $cls[0], $cls)) {
+            if (preg_match("/\(([-a-zA-Z 0-9_\/\[\].:!#]+)\)/U", $cls[0], $cls)) {
                 $hashpos = strpos($cls[1], '#');
                 // If a textile class block attribute was found with a '#' in it
                 // split it into the css class and css id...

test/fixtures/issue-224.yaml

@@ -0,0 +1,10 @@
+Support exclamation marks and colons in class names:
+  input: |
+    p(md:mt-3). Paragraph
+
+    p(!mt-3). Paragraph
+
+  expect: |
+    <p class="md:mt-3">Paragraph</p>
+
+    <p class="!mt-3">Paragraph</p>