From c9d48bbca4ed7f6ad260ca91a6c064902612fdff Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Thu, 15 Feb 2024 07:53:29 -0500
Subject: [PATCH] LibPDF/CFF: Add a comment to CFF::parse_charset()

---
 Userland/Libraries/LibPDF/Fonts/CFF.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Userland/Libraries/LibPDF/Fonts/CFF.cpp b/Userland/Libraries/LibPDF/Fonts/CFF.cpp
index d7f525da6fd..04a4a57fcbe 100644
--- a/Userland/Libraries/LibPDF/Fonts/CFF.cpp
+++ b/Userland/Libraries/LibPDF/Fonts/CFF.cpp
@@ -843,6 +843,8 @@ DeprecatedFlyString CFF::resolve_sid(SID sid, Vector<StringView> const& strings)
 PDFErrorOr<Vector<CFF::SID>> CFF::parse_charset(Reader&& reader, size_t glyph_count)
 {
     // CFF spec, "13 Charsets"
+
+    // Maps `GID - 1` to a SID (or CID, for CID-keyed fonts). The name of GID 0 is implicitly ".notdef".
     Vector<SID> names;
     auto format = TRY(reader.try_read<Card8>());
     if (format == 0) {