From 57f1fb4dc463be1e155cb6ab219fada56524ff2d Mon Sep 17 00:00:00 2001
From: Erich Gubler <erichdongubler@gmail.com>
Date: Mon, 18 May 2020 13:53:46 -0600
Subject: [PATCH] BREAKING CHANGE: improvement: disallow leading `'+'` after
 `"0x"` prefix for u64 parse

---
 src/bin/hexyl.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/bin/hexyl.rs b/src/bin/hexyl.rs
index 10c411a..e85ac59 100644
--- a/src/bin/hexyl.rs
+++ b/src/bin/hexyl.rs
@@ -163,7 +163,11 @@ fn main() {
 
 fn parse_hex_or_int(n: &str) -> Option<u64> {
     if n.starts_with("0x") {
-        u64::from_str_radix(n.trim_start_matches("0x"), 16).ok()
+        let n = n.trim_start_matches("0x");
+        if n.chars().next() == Some('+') {
+            return None;
+        }
+        u64::from_str_radix(n, 16).ok()
     } else {
         n.parse::<u64>().ok()
     }