From c6e0f847d62aafdbf091e57ec601f4d47dc24512 Mon Sep 17 00:00:00 2001
From: Michelle Tilley <michelle@michelletilley.net>
Date: Tue, 24 Mar 2026 09:43:12 -0700
Subject: fix: Atuin Hex fails to init on bash and zsh (#3341)

Fixes #3340
---
 crates/atuin-hex/src/lib.rs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/crates/atuin-hex/src/lib.rs b/crates/atuin-hex/src/lib.rs
index feed6e36..0bfe54d8 100644
--- a/crates/atuin-hex/src/lib.rs
+++ b/crates/atuin-hex/src/lib.rs
@@ -95,10 +95,10 @@ fn render_init(shell: Shell) -> &'static str {
     match shell {
         Shell::Bash | Shell::Zsh => {
             r#"if [[ "$-" == *i* ]] && [[ -t 0 ]] && [[ -t 1 ]]; then
-  _atuin_hex_tmux_current="${{TMUX:-}}"
-  _atuin_hex_tmux_previous="${{ATUIN_HEX_TMUX:-}}"
+  _atuin_hex_tmux_current="${TMUX:-}"
+  _atuin_hex_tmux_previous="${ATUIN_HEX_TMUX:-}"
 
-  if [[ -z "${{ATUIN_HEX_ACTIVE:-}}" ]] || [[ "$_atuin_hex_tmux_current" != "$_atuin_hex_tmux_previous" ]]; then
+  if [[ -z "${ATUIN_HEX_ACTIVE:-}" ]] || [[ "$_atuin_hex_tmux_current" != "$_atuin_hex_tmux_previous" ]]; then
     export ATUIN_HEX_ACTIVE=1
     export ATUIN_HEX_TMUX="$_atuin_hex_tmux_current"
     exec atuin hex
@@ -450,6 +450,12 @@ mod tests {
         assert!(!script.contains("eval \"$(atuin init bash)\""));
     }
 
+    #[test]
+    fn posix_init_has_no_double_braces() {
+        let script = render_init(Shell::Bash);
+        assert!(!script.contains("${{"), "double braces in bash init script");
+    }
+
     #[test]
     fn fish_init_uses_source() {
         let script = render_init(Shell::Fish);
-- 
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