From 0011f4df566750f983f4db4379c531aad65d4b63 Mon Sep 17 00:00:00 2001
From: Reilly Wood <26268125+rgwood@users.noreply.github.com>
Date: Sat, 26 Mar 2022 23:21:39 -0700
Subject: [PATCH] Check same-string-different-case in did_you_mean (#4991)

---
 crates/nu-protocol/src/shell_error.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/crates/nu-protocol/src/shell_error.rs b/crates/nu-protocol/src/shell_error.rs
index b80cc30cf2..7e1a8fa7b8 100644
--- a/crates/nu-protocol/src/shell_error.rs
+++ b/crates/nu-protocol/src/shell_error.rs
@@ -360,6 +360,15 @@ impl From<Box<dyn std::error::Error + Send + Sync>> for ShellError {
 }
 
 pub fn did_you_mean(possibilities: &[String], tried: &str) -> Option<String> {
+    // First see if we can find the same string just cased differently
+    let great_match_index = possibilities
+        .iter()
+        .position(|word| word.to_lowercase() == tried.to_lowercase());
+
+    if let Some(index) = great_match_index {
+        return Some(possibilities[index].to_owned());
+    }
+
     let mut possible_matches: Vec<_> = possibilities
         .iter()
         .map(|word| {