From 54a7e893b704b268f7d9d8b4692d3722db6a98df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bla=C5=BE=20Hrastnik?= <blaz@mxxn.io>
Date: Tue, 16 Mar 2021 16:20:43 +0900
Subject: [PATCH] lsp: Wire up didClose notification on editor.close.

---
 helix-term/src/commands.rs |  2 +-
 helix-view/src/editor.rs   | 18 ++++++++++++++++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index d80662d7..353d79cc 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -691,7 +691,7 @@ pub fn command_mode(cx: &mut Context) {
 
             match *parts.as_slice() {
                 ["q"] | ["quit"] => {
-                    editor.tree.remove(editor.view().id);
+                    editor.close(editor.view().id, executor);
                     // editor.should_close = true,
                 }
                 ["o", path] | ["open", path] => {
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index 0dd0592c..b04a07dd 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -48,7 +48,7 @@ impl Editor {
 
             let language_id = doc
                 .language()
-                .and_then(|s| s.split(".").last()) // source.rust
+                .and_then(|s| s.split('.').last()) // source.rust
                 .map(ToOwned::to_owned)
                 .unwrap_or_default();
 
@@ -66,7 +66,21 @@ impl Editor {
         Ok(())
     }
 
-    pub fn close(&mut self, id: Key) {
+    pub fn close(&mut self, id: Key, executor: &smol::Executor) {
+        let view = self.tree.get(self.tree.focus);
+        // get around borrowck issues
+        let language_servers = &mut self.language_servers;
+
+        let doc = &view.doc;
+
+        let language_server = doc
+            .language
+            .as_ref()
+            .and_then(|language| language_servers.get(language, &executor));
+
+        if let Some(language_server) = language_server {
+            smol::block_on(language_server.text_document_did_close(doc.identifier())).unwrap();
+        }
         self.tree.remove(id)
     }