From f9f9f5dcd6a59fcca3ad89241ff1a788fb29217b Mon Sep 17 00:00:00 2001
From: Umherirrender <umherirrender_de.wp@web.de>
Date: Sat, 14 Oct 2023 00:53:38 +0200
Subject: [PATCH] Use the expression assignment operator to simplify code

Suggested by phan, available since php7.4

Change-Id: I77c189ed451d08125fd6a6a008c55472cf3d046c
---
 src/TexVC/Mhchem/MhchemStateMachines.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/TexVC/Mhchem/MhchemStateMachines.php b/src/TexVC/Mhchem/MhchemStateMachines.php
index 767c7986c..db960eac0 100644
--- a/src/TexVC/Mhchem/MhchemStateMachines.php
+++ b/src/TexVC/Mhchem/MhchemStateMachines.php
@@ -1204,7 +1204,7 @@ class MhchemStateMachines {
 				},
 				'output-0' => static function ( &$buffer ) {
 					$ret = [];
-					$buffer["text_"] = $buffer["text_"] ?? "";
+					$buffer["text_"] ??= "";
 					if ( strlen( $buffer["text_"] ) > 4 ) {
 						$a = strlen( $buffer["text_"] ) % 3;
 						if ( $a === 0 ) {
@@ -1226,7 +1226,7 @@ class MhchemStateMachines {
 				},
 				'output-o' => static function ( &$buffer ) {
 					$ret = [];
-					$buffer["text_"] = $buffer["text_"] ?? "";
+					$buffer["text_"] ??= "";
 					if ( strlen( $buffer["text_"] ) > 4 ) {
 						$a = strlen( $buffer["text_"] ) - 3;
 						for ( $i = 0; $i < $a; $i += 3 ) {