From f5e2db6e0f509d25511d259d379ffd72f026d42d Mon Sep 17 00:00:00 2001
From: Eric Han <hanyl_fight@126.com>
Date: Tue, 13 Jun 2023 00:52:43 +0800
Subject: [PATCH] improve comment

---
 lib/ExpensiMark.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/ExpensiMark.js b/lib/ExpensiMark.js
index bebf21fd..3dec53be 100644
--- a/lib/ExpensiMark.js
+++ b/lib/ExpensiMark.js
@@ -183,7 +183,8 @@ export default class ExpensiMark {
                 name: 'italic',
                 regex: /(\b_+|\b)(?!_blank")_((?![\s_])[\s\S]*?[^\s_])_(?![^\W_])(?![^<]*(<\/pre>|<\/code>|<\/a>|<\/mention-user>|_blank))/g,
 
-                // We add g1 which is underscores or empty string back before the <em> tag
+                // g1 is empty string or includes one or more underscores, eg: `hello ___world_`
+                // We want to add g1 back before the <em> tag
                 replacement: (match, g1, g2) => (g2.includes('<pre>') || this.containsNonPairTag(g2) ? match : `${g1}<em>${g2}</em>`),
             },
             {