General: Add inline PHPCS options to leave regex indentation.

We have a handful of super long regexen that are written over multiple lines, as a collection of strings concatenated together. Each string is indented appropriately for the regex, but PHPCS doesn't recognised this, so defaults to removing the extra whitespace.

Disabling the `Squiz.Strings.ConcatenationSpacing.PaddingFound` rule for these blocks stops the extra whitespace from being removed.

See #41057.



git-svn-id: https://develop.svn.wordpress.org/trunk@42249 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/shortcodes.php

@@ -235,8 +235,10 @@ function get_shortcode_regex( $tagnames = null ) {
 
 	// WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcode_tag()
 	// Also, see shortcode_unautop() and shortcode.js.
+
+	// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
 	return
-		'\\['                              // Opening bracket
+		'\\['                                // Opening bracket
 		. '(\\[?)'                           // 1: Optional second opening bracket for escaping shortcodes: [[tag]]
 		. "($tagregexp)"                     // 2: Shortcode name
 		. '(?![\\w-])'                       // Not followed by word character or hyphen
@@ -264,6 +266,7 @@ function get_shortcode_regex( $tagnames = null ) {
 		.     ')?'
 		. ')'
 		. '(\\]?)';                          // 6: Optional second closing brocket for escaping shortcodes: [[tag]]
+	// phpcs:enable
 }
 
 /**