Enforce rustfmt on CI & clean up some let-else format errors

.github/workflows/ci.yml

@@ -17,6 +17,24 @@ env:
   RUST_BACKTRACE: 1
 
 jobs:
+  rustfmt:
+    name: Check formatting
+    runs-on: self-hosted
+    steps:
+      - name: Install Rust
+        run: |
+          rustup set profile minimal
+          rustup update stable
+
+      - name: Checkout repo
+        uses: actions/checkout@v2
+        with:
+          clean: false
+          submodules: 'recursive'
+
+      - name: cargo fmt
+        run: cargo fmt --all -- --check
+
   tests:
     name: Run tests
     runs-on:

crates/collab/src/tests/integration_tests.rs

@@ -2244,7 +2244,9 @@ async fn test_propagate_saves_and_fs_changes(
     });
 
     // Edit the buffer as the host and concurrently save as guest B.
-    let save_b = project_b.update(cx_b, |project, cx| project.save_buffer(buffer_b.clone(), cx));
+    let save_b = project_b.update(cx_b, |project, cx| {
+        project.save_buffer(buffer_b.clone(), cx)
+    });
     buffer_a.update(cx_a, |buf, cx| buf.edit([(0..0, "hi-a, ")], None, cx));
     save_b.await.unwrap();
     assert_eq!(
@@ -2917,7 +2919,10 @@ async fn test_buffer_conflict_after_save(
         assert!(!buf.has_conflict());
     });
 
-    project_b.update(cx_b, |project, cx| project.save_buffer(buffer_b.clone(), cx))
+    project_b
+        .update(cx_b, |project, cx| {
+            project.save_buffer(buffer_b.clone(), cx)
+        })
         .await
         .unwrap();
     cx_a.foreground().forbid_parking();

crates/editor/src/editor.rs

@@ -84,7 +84,7 @@ use std::{
 };
 pub use sum_tree::Bias;
 use theme::{DiagnosticStyle, Theme};
-use util::{post_inc, ResultExt, TryFutureExt, RangeExt};
+use util::{post_inc, RangeExt, ResultExt, TryFutureExt};
 use workspace::{ItemNavHistory, ViewId, Workspace, WorkspaceId};
 
 use crate::git::diff_hunk_to_display;
@@ -4790,8 +4790,10 @@ impl Editor {
     ) {
         self.change_selections(Some(Autoscroll::fit()), cx, |s| {
             s.move_offsets_with(|snapshot, selection| {
-                let Some(enclosing_bracket_ranges) = snapshot.enclosing_bracket_ranges(selection.start..selection.end) else { return; };
-                
+                let Some(enclosing_bracket_ranges) = snapshot.enclosing_bracket_ranges(selection.start..selection.end) else {
+                    return;
+                };
+
                 let mut best_length = usize::MAX;
                 let mut best_inside = false;
                 let mut best_in_bracket_range = false;
@@ -4801,17 +4803,17 @@ impl Editor {
                     let length = close.end() - open.start;
                     let inside = selection.start >= open.end && selection.end <= *close.start();
                     let in_bracket_range = open.to_inclusive().contains(&selection.head()) || close.contains(&selection.head());
-                    
+
                     // If best is next to a bracket and current isn't, skip
                     if !in_bracket_range && best_in_bracket_range {
                         continue;
                     }
-                    
+
                     // Prefer smaller lengths unless best is inside and current isn't
                     if length > best_length && (best_inside || !inside) {
                         continue;
                     }
-                    
+
                     best_length = length;
                     best_inside = inside;
                     best_in_bracket_range = in_bracket_range;
@@ -4829,7 +4831,7 @@ impl Editor {
                         }
                     });
                 }
-                
+
                 if let Some(destination) = best_destination {
                     selection.collapse_to(destination, SelectionGoal::None);
                 }