fix some potentials for errors to bubble up (#547)

* fix some potentials for errors to bubble up (#490)
* fix async diff failing panic

Author: Stephan Dilly

Diff for: CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ![charcount](assets/char_count.gif)
 
 ### Fixed
+- fix some potential errors when deleting files while they are being diffed ([#490](https://github.com/extrawurst/gitui/issues/490))
 - push defaults to 'origin' remote if it exists ([#494](https://github.com/extrawurst/gitui/issues/494))
 - support missing pageUp/down support in branchlist ([#519](https://github.com/extrawurst/gitui/issues/519))
 - don't hide branch name while in commit dialog ([#529](https://github.com/extrawurst/gitui/issues/529))

Diff for: Makefile

@@ -5,7 +5,7 @@ profile:
 	cargo run --features=timing,pprof -- -l
 
 debug:
-	cargo run --features=timing -- -l
+	RUST_BACKTRACE=true cargo run --features=timing -- -l
 
 build-release:
 	cargo build --release

Diff for: asyncgit/src/diff.rs

@@ -118,8 +118,14 @@ impl AsyncDiff {
                 arc_last,
                 arc_current,
                 hash,
-            )
-            .expect("error getting diff");
+            );
+
+            let notify = if let Err(err) = notify {
+                log::error!("get_diff_helper error: {}", err);
+                true
+            } else {
+                false
+            };
 
             arc_pending.fetch_sub(1, Ordering::Relaxed);
 

Diff for: src/components/diff.rs

@@ -518,6 +518,16 @@ impl DiffComponent {
         );
     }
 
+    fn stage_unstage_hunk(&mut self) -> Result<()> {
+        if self.current.is_stage {
+            self.unstage_hunk()?;
+        } else {
+            self.stage_hunk()?;
+        }
+
+        Ok(())
+    }
+
     const fn is_stage(&self) -> bool {
         self.current.is_stage
     }
@@ -659,11 +669,12 @@ impl Component for DiffComponent {
                 } else if e == self.key_config.enter
                     && !self.is_immutable
                 {
-                    if self.current.is_stage {
-                        self.unstage_hunk()?;
-                    } else {
-                        self.stage_hunk()?;
-                    }
+                    try_or_popup!(
+                        self,
+                        "hunk error:",
+                        self.stage_unstage_hunk()
+                    );
+
                     Ok(true)
                 } else if e == self.key_config.status_reset_item
                     && !self.is_immutable