From fb5e2670d634f8a024d76f28d931bc36988884b4 Mon Sep 17 00:00:00 2001
From: Karol Kosek <krkk@serenityos.org>
Date: Thu, 29 Jul 2021 15:36:10 +0200
Subject: LibWeb: Fix highlighting HTML comments

Commit b193351a99 caused the HTML comments to flash when changing
the text cursor. Also, when double-clicking on a comment, the selection
started from the beginning of the file instead.

The following message was displaying when `TOKENIZER_TRACE_DEBUG`
was enabled:

    (Tokenizer::nth_last_position) Invalid position requested: 4th-last
    of 4. Returning (0-0).

Changing the `nth_last_position` to 3 fixes this. I'm guessing that's
because the parser is at that moment on the second hyphen of the `<!--`
string, so it has to go back only by three characters.
---
 Tests/LibWeb/TestHTMLTokenizer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Tests/LibWeb')

diff --git a/Tests/LibWeb/TestHTMLTokenizer.cpp b/Tests/LibWeb/TestHTMLTokenizer.cpp
index 71ca7409ee..da84b9e295 100644
--- a/Tests/LibWeb/TestHTMLTokenizer.cpp
+++ b/Tests/LibWeb/TestHTMLTokenizer.cpp
@@ -206,5 +206,5 @@ TEST_CASE(regression)
     auto file_contents = file.value()->read_all();
     auto tokens = run_tokenizer(file_contents);
     u32 hash = hash_tokens(tokens);
-    EXPECT_EQ(hash, 1280197787u);
+    EXPECT_EQ(hash, 3215459107u);
 }
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