From f47c2687f8f6216b7867565cd7fab9a92bd11f31 Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Tue, 10 Oct 2023 19:35:50 +0200
Subject: [PATCH] feat: Warn when overriding CHEZMOI_ env vars

Co-authored-by: Austin Ziegler <austin@zieglers.ca>
---
 internal/cmd/config.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/cmd/config.go b/internal/cmd/config.go
index 67cc3c0d00d..ec02306baf9 100644
--- a/internal/cmd/config.go
+++ b/internal/cmd/config.go
@@ -2125,6 +2125,9 @@ func (c *Config) persistentPreRunRootE(cmd *cobra.Command, args []string) error
 		}
 	}
 	for key, value := range c.ScriptEnv {
+		if strings.HasPrefix(key, "CHEZMOI_") {
+			c.errorf("warning: %s: overriding reserved environment variable", key)
+		}
 		os.Setenv(key, value)
 	}