From 43bfec7170d8df099f2ef8f300d77e0883319dd8 Mon Sep 17 00:00:00 2001
From: Terts Diepraam <terts.diepraam@gmail.com>
Date: Mon, 28 Jun 2021 13:39:34 +0200
Subject: [PATCH] uucore/error: add macros for standardized error handling

---
 src/uucore/src/lib/macros.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/uucore/src/lib/macros.rs b/src/uucore/src/lib/macros.rs
index 07d47eed8..e4d83e746 100644
--- a/src/uucore/src/lib/macros.rs
+++ b/src/uucore/src/lib/macros.rs
@@ -21,6 +21,24 @@ macro_rules! executable(
     })
 );
 
+#[macro_export]
+macro_rules! show(
+    ($err:expr) => ({
+        let e = $err;
+        uucore::error::set_exit_code(e.code());
+        eprintln!("{}: {}", executable!(), e);
+    })
+);
+
+#[macro_export]
+macro_rules! show_if_err(
+    ($res:expr) => ({
+        if let Err(e) = $res {
+            show!(e);
+        }
+    })
+);
+
 /// Show an error to stderr in a similar style to GNU coreutils.
 #[macro_export]
 macro_rules! show_error(