From 488a06a5ddac13bec6ddaf5e02ebc937c1e3b805 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 15 Aug 2021 21:49:27 +0100
Subject: [PATCH] slip: DumpHex prints utf8 debug output too

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/slip.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/slip.rs b/src/slip.rs
index b1d6eca..0b1fe6c 100644
--- a/src/slip.rs
+++ b/src/slip.rs
@@ -180,6 +180,12 @@ impl Debug for DumpHex<'_> {
   #[throws(fmt::Error)]
   fn fmt(&self, f: &mut fmt::Formatter) {
     for v in self.0 { write!(f, "{:02x}", v)?; }
+    match str::from_utf8(self.0) {
+      Ok(s) => write!(f, "={:?}", s)?,
+      Err(x) => write!(f, "={:?}..",
+                       str::from_utf8(&self.0[0..x.valid_up_to()]).unwrap()
+      )?,
+    }
   }
 }
 
-- 
2.30.2