Revert [28719] and no longer math-process multiplication of negative numbers

see #19308
fixes #30445
props rmccue

git-svn-id: https://develop.svn.wordpress.org/trunk@30752 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/formatting.php

@@ -288,9 +288,9 @@ function wptexturize($text, $reset = false) {
 			}
 
 			// 9x9 (times), but never 0x9999
-			if ( 1 === preg_match( '/(?<=\d)x-?\d/', $curl ) ) {
+			if ( 1 === preg_match( '/(?<=\d)x\d/', $curl ) ) {
 				// Searching for a digit is 10 times more expensive than for the x, so we avoid doing this one!
-				$curl = preg_replace( '/\b(\d(?(?<=0)[\d\.,]+|[\d\.,]*))x(-?\d[\d\.,]*)\b/', '$1&#215;$2', $curl );
+				$curl = preg_replace( '/\b(\d(?(?<=0)[\d\.,]+|[\d\.,]*))x(\d[\d\.,]*)\b/', '$1&#215;$2', $curl );
 			}
 		}
 	}

tests/phpunit/tests/formatting/WPTexturize.php

@@ -802,9 +802,10 @@ class Tests_Formatting_WPTexturize extends WP_UnitTestCase {
 				"-123x1=-123",
 				"-123×1=-123",
 			),
+			// @ticket 30445
 			array(
 				"-123x-1",
-				"-123×-1",
+				"-123x-1",
 			),
 			array(
 				"0.675x1=0.675",