github.com/TelegramMessenger/Telegram-iOS (link)

# Add directories or file patterns to ignore during indexing (e.g. foo/ or *.csv)
spm-files

# tgcalls Library

The tgcalls VoIP library source. See the root `CLAUDE.md` for build instructions and the project overview.

## macOS Build Support

This repo has been patched to support native macOS arm64 builds (`darwin_arm64` CPU) in addition to the original iOS targets. Changes made:
- `third-party/webrtc/BUILD` — added `@platforms//os:linux` to `arch_specific_cflags` select (fixes macOS getting Linux flags via `//conditions:default`); moved `cocoa_threading.mm` from `cc_library` to `webrtc_platform

# RichTextEditor — project guide

A from-scratch **WYSIWYG rich-text editor for iOS** (UIKit; TextKit 2 on iOS 16+, TextKit 1 on iOS 13–15;
floor **iOS 13**) with images
(captions), lists, tables, links, inline custom emoji, and Telegram-style spoilers. The **defining
requirement** is **continuous selection across the whole document, including partial selection
*through* table cells** — which (per verified spike research) is only achievable with a **custom
`UITextInput` view owning one global position

# CLAUDE.md

This file provides guidance to AI assistants when working with code in this repository.

## Build

The app is built using Bazel via the `Make.py` wrapper. There is no selective per-module build — the only supported invocation builds the full `Telegram/Telegram` target.

**Command:**

```sh
python3 build-system/Make/Make.py --overrideXcodeVersion \
 --cacheDir ~/telegram-bazel-cache \
 build \
 --configurationPath build-system/appstore-configuration.json \
 --gitCodesigningRepository git@gitla

# RichTextEditorMediaView — module guide

Host-side renderers for media (photo / video / location / audio) embedded in the **RichText editor**
(`submodules/TelegramUI/Components/RichTextEditor`, behind the `debugRichText` flag). The editor owns a
narrow seam — `RichTextMediaItemView` (a `UIView` with `update(size:)`) — and resolves each `.media`
block to one of these views via a host-registered provider, then positions/sizes/culls it
(`DocumentCanvasView+Media.syncMediaItemViews`). This module supplie

# subcodec

C++23 library that constructs H.264 Baseline/High Profile bitstreams for sprite multiplexing. Composites many small sprite animations into a single H.264 stream decoded by one hardware decoder, using selective macroblock updates (P_16x16, I_16x16, skip) in P-frames.

## Build

```bash
cmake -B build && cmake --build build
```

- This project lives inside `telegram-ios/third-party/subcodec/`
- CMake 3.16+, C++23 standard (for `std::expected`); OpenH264 compiled as C++11
- Dependencies: FFmpeg (li