Extract a language crate

crates/zed/Cargo.toml

@@ -18,6 +18,7 @@ test-support = [
     "buffer/test-support",
     "client/test-support",
     "gpui/test-support",
+    "language/test-support",
     "project/test-support",
     "rpc/test-support",
     "tempdir",
@@ -33,6 +34,7 @@ fuzzy = { path = "../fuzzy" }
 editor = { path = "../editor" }
 file_finder = { path = "../file_finder" }
 gpui = { path = "../gpui" }
+language = { path = "../language" }
 people_panel = { path = "../people_panel" }
 project = { path = "../project" }
 project_panel = { path = "../project_panel" }
@@ -85,6 +87,7 @@ url = "2.2"
 buffer = { path = "../buffer", features = ["test-support"] }
 editor = { path = "../editor", features = ["test-support"] }
 gpui = { path = "../gpui", features = ["test-support"] }
+language = { path = "../language", features = ["test-support"] }
 project = { path = "../project", features = ["test-support"] }
 rpc = { path = "../rpc", features = ["test-support"] }
 client = { path = "../client", features = ["test-support"] }

crates/zed/src/language.rs

@@ -1,4 +1,4 @@
-use buffer::{Language, LanguageRegistry};
+pub use language::{Language, LanguageRegistry};
 use rust_embed::RustEmbed;
 use std::borrow::Cow;
 use std::{str, sync::Arc};

crates/zed/src/lib.rs

@@ -4,8 +4,7 @@ pub mod menus;
 #[cfg(any(test, feature = "test-support"))]
 pub mod test;
 
-pub use buffer;
-use buffer::LanguageRegistry;
+use self::language::LanguageRegistry;
 use chat_panel::ChatPanel;
 pub use client;
 pub use editor;

crates/zed/src/test.rs

@@ -1,7 +1,7 @@
 use crate::{assets::Assets, AppState};
-use buffer::LanguageRegistry;
 use client::{http::ServerResponse, test::FakeHttpClient, ChannelList, Client, UserStore};
 use gpui::{AssetSource, MutableAppContext};
+use language::LanguageRegistry;
 use parking_lot::Mutex;
 use postage::watch;
 use project::fs::FakeFs;