From ec611526ac72e2b692abe7acebafe0e9ad752b23 Mon Sep 17 00:00:00 2001
From: JT <547158+jntrnr@users.noreply.github.com>
Date: Mon, 25 Apr 2022 08:40:55 +1200
Subject: [PATCH] Warn if we see let config = ../.. (#5318)

---
 src/main.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index e7bd915a3..8eb18699e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -277,6 +277,14 @@ fn setup_config(
 
     config_files::read_config_file(engine_state, stack, env_file, is_perf_true(), true);
     config_files::read_config_file(engine_state, stack, config_file, is_perf_true(), false);
+
+    // Give a warning if we see `$config` for a few releases
+    {
+        let working_set = StateWorkingSet::new(engine_state);
+        if working_set.find_variable(b"$config").is_some() {
+            println!("warning: use `let-env config = ...` instead of `let config = ...`");
+        }
+    }
 }
 
 fn parse_commandline_args(