From 5b982ac2572caf3de0f81fc5724ab815554cc9df Mon Sep 17 00:00:00 2001
From: Zef Hemel <zef@zef.me>
Date: Mon, 10 Feb 2025 20:29:52 +0100
Subject: [PATCH] Fix syntax highlighting of Lua expressions that start with
 whitespace

---
 common/markdown_parser/parser.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/markdown_parser/parser.ts b/common/markdown_parser/parser.ts
index 6d262a06..e79932f4 100644
--- a/common/markdown_parser/parser.ts
+++ b/common/markdown_parser/parser.ts
@@ -357,6 +357,9 @@ const LuaDirectives: MarkdownConfig = {
         // Let's parse as an expression
         const parsedExpression = luaLanguage.parser.parse(`_(${bodyText})`);
 
+        // If bodyText starts with whitespace, we need to offset this later
+        const whiteSpaceOffset = bodyText.match(/^\s*/)?.[0].length ?? 0;
+
         const node = parsedExpression.resolveInner(2, 0).firstChild?.nextSibling
           ?.nextSibling;
 
@@ -367,7 +370,7 @@ const LuaDirectives: MarkdownConfig = {
           "LuaExpressionDirective",
           pos + 2,
           endPos - 1,
-          [cx.elt(node.toTree()!, pos + 2)],
+          [cx.elt(node.toTree()!, pos + 2 + whiteSpaceOffset)],
         );
 
         return cx.addElement(