Fix panic on close last buffer (#2367) (#2658)

* Fix panic on close last buffer (#2367)

In certain circumstances it was possible to cause a panic when closing
buffers due to some mishandling of view document history.

A change has been made to delete removed documents from the history of
accessed documents for each view. The ensures we don't attempt to jump
to a deleted document by mistake.

* Move remove document code into View function 'remove_document'

* Replace 'view.jumps.remove' call with 'view.remove_document' call

1 files changed, 5 insertions, 0 deletions

diff --git a/helix-view/src/view.rs b/helix-view/src/view.rs
index 091d1f2e..a496fe33 100644
--- a/helix-view/src/view.rs
+++ b/helix-view/src/view.rs
@@ -316,6 +316,11 @@ impl View {
         ))
     }
 
+    pub fn remove_document(&mut self, doc_id: &DocumentId) {
+        self.jumps.remove(doc_id);
+        self.docs_access_history.retain(|doc| doc != doc_id);
+    }
+
     // pub fn traverse<F>(&self, text: RopeSlice, start: usize, end: usize, fun: F)
     // where
     //     F: Fn(usize, usize),