From bf24de0d04ceef8808d40b2bcac15880e3871de5 Mon Sep 17 00:00:00 2001
From: Marcello Lamonaca <marcello@lamonaca.eu>
Date: Wed, 14 Feb 2024 23:42:27 +0100
Subject: [PATCH] add explicit separator default value

---
 src/main.rs | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 9e2dc8d..18eac6a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -32,8 +32,7 @@ fn main() -> Result<()> {
         .with_context(|| format!("`{input}` does not contain valid JSON"))?;
 
     let mut vars: Vec<EnvVar> = vec![];
-    let separator = args.separator.unwrap_or("__".to_string());
-    JsonParser::parse(&mut vars, "", &json, &separator);
+    JsonParser::parse(&mut vars, "", &json, &args.separator);
 
     let environ = vars
         .iter()
@@ -70,9 +69,9 @@ struct Args {
     #[arg(short, long, value_name = "FILE")]
     output: Option<String>,
 
-    /// Separator for nested keys, defaults to double underscore (__)
-    #[arg(short, long, value_name = "STRING")]
-    separator: Option<String>,
+    /// Separator for nested keys
+    #[arg(short, long, value_name = "STRING", default_value = "__")]
+    separator: String,
 }
 
 struct JsonParser;