From 6e35138901d052f19d41ec7bafeaf31f1adf54f6 Mon Sep 17 00:00:00 2001
From: Justus Klausecker <justus@klausecker.de>
Date: Fri, 9 Jan 2026 04:43:31 +0100
Subject: [PATCH] all: prefer `else => |e| return e,` over `else => return
 err,`

When switching on an error, using the captured value instead of the original
one is always preferable since its error set has been narrowed to only
contain errors which haven't already been handled by other switch prongs.

The subsequent commits will disallow this form as an unreachable `else` prong.
---
 lib/std/tar/Writer.zig | 4 ++--
 lib/std/testing.zig    | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/std/tar/Writer.zig b/lib/std/tar/Writer.zig
index 583bc8cfc1..aa4d9b1bbb 100644
--- a/lib/std/tar/Writer.zig
+++ b/lib/std/tar/Writer.zig
@@ -114,7 +114,7 @@ fn writeHeader(
     if (typeflag == .symbolic_link)
         header.setLinkname(link_name) catch |err| switch (err) {
             error.NameTooLong => try w.writeExtendedHeader(.gnu_long_link, &.{link_name}),
-            else => return err,
+            else => |e| return e,
         };
     try header.write(w.underlying_writer);
 }
@@ -131,7 +131,7 @@ fn setPath(w: *Writer, header: *Header, sub_path: []const u8) Error!void {
                 &.{ w.prefix, "/", sub_path };
             try w.writeExtendedHeader(.gnu_long_name, buffers);
         },
-        else => return err,
+        else => |e| return e,
     };
 }
 
diff --git a/lib/std/testing.zig b/lib/std/testing.zig
index 24287f65aa..6d2a045abb 100644
--- a/lib/std/testing.zig
+++ b/lib/std/testing.zig
@@ -1187,7 +1187,7 @@ pub fn checkAllAllocationFailures(backing_allocator: std.mem.Allocator, comptime
                     return error.MemoryLeakDetected;
                 }
             },
-            else => return err,
+            else => |e| return e,
         }
     }
 }