Change focus to modified docs on quit (#3872)

* Change focus to modified docs on quit

When quitting with modified documents, automatically switch focus to
one of them.

* Update helix-term/src/commands/typed.rs

Co-authored-by: Poliorcetics <poliorcetics@users.noreply.github.com>

* Make it work with buffer-close-all and the like

* Cleanup

Use Cow instead of String, and rename DoesntExist -> DoesNotExist

Co-authored-by: Poliorcetics <poliorcetics@users.noreply.github.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index 2ef99c6a..b6b2f664 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -5,6 +5,7 @@ use helix_core::auto_pairs::AutoPairs;
 use helix_core::Range;
 use serde::de::{self, Deserialize, Deserializer};
 use serde::Serialize;
+use std::borrow::Cow;
 use std::cell::Cell;
 use std::collections::HashMap;
 use std::fmt::Display;
@@ -1038,6 +1039,12 @@ impl Document {
             .map(helix_core::path::get_relative_path)
     }
 
+    pub fn display_name(&self) -> Cow<'static, str> {
+        self.relative_path()
+            .map(|path| path.to_string_lossy().to_string().into())
+            .unwrap_or_else(|| SCRATCH_BUFFER_NAME.into())
+    }
+
     // transact(Fn) ?
 
     // -- LSP methods