add comment for italic rules

Expensify · May 29, 2024 · 4ef55d7 · 4ef55d7
1 parent c1cfdae
commit 4ef55d7
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/lib/ExpensiMark.js b/lib/ExpensiMark.js
@@ -282,6 +282,11 @@ export default class ExpensiMark {
                     return `<blockquote>${isStartingWithSpace ? ' ' : ''}${replacedText}</blockquote>`;
                 },
             },
+            /**
+             * Use \b in this case because it will match on words, letters,
+             * and _: https://www.rexegg.com/regex-boundaries.html#wordboundary
+             * Use [\s\S]* instead of .* to match newline
+             */
             {
                 name: 'italic',
                 regex: /(<(pre|code|a|mention-user)[^>]*>(.*?)<\/\2>)|((\b_+|\b)_((?![\s_])[\s\S]*?[^\s_](?<!\s))_(?![^\W_])(?![^<]*>)(?![^<]*(<\/pre>|<\/code>|<\/a>|<\/mention-user>)))/g,