From d094d1d8919dbfb091511646b73bd34454f0a565 Mon Sep 17 00:00:00 2001
From: Keith Simmons <keith@zed.dev>
Date: Thu, 19 May 2022 10:25:06 -0700
Subject: [PATCH] WIP copy on delete

---
 crates/editor/src/editor.rs     |  6 +++---
 crates/vim/src/normal/change.rs | 18 ++++++++++++++++--
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index a4761ddb060d42eee902b06909152f2cb8b26594..219fcba22b7c23e4a3f25f2d13557b4466d4386f 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -837,9 +837,9 @@ struct ActiveDiagnosticGroup {
 }
 
 #[derive(Serialize, Deserialize)]
-struct ClipboardSelection {
-    len: usize,
-    is_entire_line: bool,
+pub struct ClipboardSelection {
+    pub len: usize,
+    pub is_entire_line: bool,
 }
 
 #[derive(Debug)]
diff --git a/crates/vim/src/normal/change.rs b/crates/vim/src/normal/change.rs
index 8124f8a2006c974d8dace98648d7128c8d881aa2..0636b4b1ef7fb1fb5002a4d9d5f71fdcdcdae9ff 100644
--- a/crates/vim/src/normal/change.rs
+++ b/crates/vim/src/normal/change.rs
@@ -1,6 +1,6 @@
 use crate::{motion::Motion, state::Mode, Vim};
-use editor::{char_kind, movement, Autoscroll};
-use gpui::{impl_actions, MutableAppContext, ViewContext};
+use editor::{char_kind, movement, Autoscroll, ClipboardSelection};
+use gpui::{impl_actions, ClipboardItem, MutableAppContext, ViewContext};
 use serde::Deserialize;
 use workspace::Workspace;
 
@@ -22,12 +22,26 @@ pub fn change_over(vim: &mut Vim, motion: Motion, cx: &mut MutableAppContext) {
         editor.transact(cx, |editor, cx| {
             // We are swapping to insert mode anyway. Just set the line end clipping behavior now
             editor.set_clip_at_line_ends(false, cx);
+            let mut text = String::new();
+            let buffer = editor.buffer().read(cx).snapshot(cx);
+            let mut clipboard_selections = Vec::with_capacity(editor.selections.count());
             editor.change_selections(Some(Autoscroll::Fit), cx, |s| {
                 s.move_with(|map, selection| {
                     motion.expand_selection(map, selection, false);
+                    let mut len = 0;
+                    let range = selection.start.to_point(map)..selection.end.to_point(map);
+                    for chunk in buffer.text_for_range(range) {
+                        text.push_str(chunk);
+                        len += chunk.len();
+                    }
+                    clipboard_selections.push(ClipboardSelection {
+                        len,
+                        is_entire_line: motion.linewise(),
+                    });
                 });
             });
             editor.insert(&"", cx);
+            cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
         });
     });
     vim.switch_mode(Mode::Insert, cx)