From 34b55aa04e35b1a2a42e3169c1251ee7fcc74986 Mon Sep 17 00:00:00 2001
From: Malo <57839069+MDLC01@users.noreply.github.com>
Date: Thu, 24 Sep 2026 14:54:59 +0200
Subject: [PATCH 1/2] Bump MSRV to 1.92

---
 .github/workflows/ci.yml | 4 ++--
 Cargo.toml               | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0321283b..0a7745de 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      - uses: dtolnay/rust-toolchain@e814c742d4444ce2f3f6abddea7faf00161ed941 # 1.88.0
+      - uses: dtolnay/rust-toolchain@87eb139fed4b08a67bd1fa429a21d1f5d523e03e # 1.92.0
       - uses: Swatinem/rust-cache@e18b497796c12c097a38f9edb9d0641fb99eee32 # v2
       - run: cargo test --workspace --all-features --no-run
       - run: cargo test --workspace --all-features --no-fail-fast
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      - uses: dtolnay/rust-toolchain@e814c742d4444ce2f3f6abddea7faf00161ed941 # 1.88.0
+      - uses: dtolnay/rust-toolchain@87eb139fed4b08a67bd1fa429a21d1f5d523e03e # 1.92.0
         with:
           components: clippy, rustfmt
       - uses: Swatinem/rust-cache@e18b497796c12c097a38f9edb9d0641fb99eee32 # v2
diff --git a/Cargo.toml b/Cargo.toml
index 527944ec..38686a18 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "codex"
 version = "0.3.0"
-rust-version = "1.88" # also change in ci.yml
+rust-version = "1.92" # also change in ci.yml
 authors = ["The Typst Project Developers"]
 edition = "2024"
 description = "Human-friendly notation for Unicode symbols."

From 66d965d28758d238b57984e4fa8ac4d7d529b46f Mon Sep 17 00:00:00 2001
From: Malo <57839069+MDLC01@users.noreply.github.com>
Date: Thu, 24 Sep 2026 14:56:19 +0200
Subject: [PATCH 2/2] Add styling support for Unicode 18.0's LATIN SMALL
 LIGATURE LONG S WITH DESCENDER S

---
 src/styling.rs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/styling.rs b/src/styling.rs
index 1e777743..f7386c9a 100644
--- a/src/styling.rs
+++ b/src/styling.rs
@@ -265,7 +265,7 @@ impl MathStyle {
             (_, true, None) if is_latin(c) | is_lower_greek(c) => MathStyle::BoldItalic,
             (_, true, None) if is_upper_greek(c) => MathStyle::Bold,
             (_, true, _) if is_digit(c) | matches!(c, 'Ϝ' | 'ϝ') => MathStyle::Bold,
-            (_, _, Some(true) | None) if matches!(c, 'ı' | 'ȷ' | 'ħ') => {
+            (_, _, Some(true) | None) if matches!(c, 'ı' | 'ȷ' | 'ħ' | '𝾕') => {
                 MathStyle::Italic
             }
             (_, _, Some(true) | None) if is_hebrew(c) => MathStyle::Hebrew,
@@ -448,8 +448,8 @@ mod conversions {
 
     /// The character given by adding `delta` to the codepoint of `c`.
     #[inline]
-    fn apply_delta(c: char, delta: u32) -> char {
-        std::char::from_u32((c as u32) + delta).unwrap()
+    fn apply_delta(c: char, delta: i32) -> char {
+        std::char::from_u32((c as u32).strict_add_signed(delta)).unwrap()
     }
 
     pub fn to_bold(c: char) -> char {
@@ -495,6 +495,8 @@ mod conversions {
             // Dotless symbols (U+1D6A4..U+1D6A5)
             'ı' => 0x1D573,
             'ȷ' => 0x1D46E,
+            // Additional Latin symbol (U+1D6A6)
+            '𝾕' => -0x8EF,
             // Italic Greek symbols (U+1D6E2..U+1D714)
             'Α'..='Ρ' => 0x1D351,
             'ϴ' => 0x1D2FF,