From 8d03cf5b02fac8d1c3feae7032727f3a23d2f84b Mon Sep 17 00:00:00 2001
From: Darren Schroeder <343840+fdncred@users.noreply.github.com>
Date: Sat, 11 Jul 2020 16:49:44 -0500
Subject: [PATCH] added more verbose message to assert (#2157)

* added more verbose message to assert

having a -h short is bad for any command since it's already used by --help.

* updated for fmt
---
 crates/nu-protocol/src/signature.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/crates/nu-protocol/src/signature.rs b/crates/nu-protocol/src/signature.rs
index 7efe43583..12557c85a 100644
--- a/crates/nu-protocol/src/signature.rs
+++ b/crates/nu-protocol/src/signature.rs
@@ -274,7 +274,10 @@ impl Signature {
         short: Option<char>,
     ) -> Signature {
         let s = short.and_then(|c| {
-            debug_assert!(!self.get_shorts().contains(&c));
+            debug_assert!(
+                !self.get_shorts().contains(&c),
+                "There may be duplicate short flags, such as -h"
+            );
             Some(c)
         });