From 654af1e775f788535bbbb5c67431c1fe2a65d737 Mon Sep 17 00:00:00 2001
From: Ellie Huxtable <ellie@atuin.sh>
Date: Tue, 27 Jan 2026 13:47:35 -0800
Subject: fix: do not set ATUIN_SESSION if it is already set (#3107)

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## Checks
- [ ] I am happy for maintainers to push small adjustments to this PR,
to speed up the review cycle
- [ ] I have checked that there are no existing pull requests for the
same thing
---
 crates/atuin/src/shell/atuin.bash | 6 ++++--
 crates/atuin/src/shell/atuin.fish | 4 +++-
 crates/atuin/src/shell/atuin.nu   | 4 +++-
 crates/atuin/src/shell/atuin.ps1  | 4 +++-
 crates/atuin/src/shell/atuin.xsh  | 3 ++-
 crates/atuin/src/shell/atuin.zsh  | 4 +++-
 6 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/crates/atuin/src/shell/atuin.bash b/crates/atuin/src/shell/atuin.bash
index 88b6af3a..18c943e2 100644
--- a/crates/atuin/src/shell/atuin.bash
+++ b/crates/atuin/src/shell/atuin.bash
@@ -12,9 +12,11 @@ else # (include guard) beginning of main content
 #------------------------------------------------------------------------------
 __atuin_initialized=true
 
-ATUIN_SESSION=$(atuin uuid)
+if [[ -z "${ATUIN_SESSION:-}" ]]; then
+    ATUIN_SESSION=$(atuin uuid)
+    export ATUIN_SESSION
+fi
 ATUIN_STTY=$(stty -g)
-export ATUIN_SESSION
 ATUIN_HISTORY_ID=""
 
 export ATUIN_PREEXEC_BACKEND=$SHLVL:none
diff --git a/crates/atuin/src/shell/atuin.fish b/crates/atuin/src/shell/atuin.fish
index e333f981..0288e13b 100644
--- a/crates/atuin/src/shell/atuin.fish
+++ b/crates/atuin/src/shell/atuin.fish
@@ -1,4 +1,6 @@
-set -gx ATUIN_SESSION (atuin uuid)
+if not set -q ATUIN_SESSION
+    set -gx ATUIN_SESSION (atuin uuid)
+end
 set --erase ATUIN_HISTORY_ID
 
 function _atuin_preexec --on-event fish_preexec
diff --git a/crates/atuin/src/shell/atuin.nu b/crates/atuin/src/shell/atuin.nu
index 190f3117..150309cb 100644
--- a/crates/atuin/src/shell/atuin.nu
+++ b/crates/atuin/src/shell/atuin.nu
@@ -8,7 +8,9 @@ use (if not (
     (version).minor >= 103
 ) { "compat" }) *
 
-$env.ATUIN_SESSION = (random uuid -v 7 | str replace -a "-" "")
+if 'ATUIN_SESSION' not-in $env {
+    $env.ATUIN_SESSION = (random uuid -v 7 | str replace -a "-" "")
+}
 hide-env -i ATUIN_HISTORY_ID
 
 # Magic token to make sure we don't record commands run by keybindings
diff --git a/crates/atuin/src/shell/atuin.ps1 b/crates/atuin/src/shell/atuin.ps1
index 37753f8a..9215ad34 100644
--- a/crates/atuin/src/shell/atuin.ps1
+++ b/crates/atuin/src/shell/atuin.ps1
@@ -30,7 +30,9 @@ if (!(Get-Module PSReadLine -ErrorAction Ignore)) {
 }
 
 New-Module -Name Atuin -ScriptBlock {
-    $env:ATUIN_SESSION = atuin uuid
+    if (-not $env:ATUIN_SESSION) {
+        $env:ATUIN_SESSION = atuin uuid
+    }
 
     $script:atuinHistoryId = $null
     $script:previousPSConsoleHostReadLine = $Function:PSConsoleHostReadLine
diff --git a/crates/atuin/src/shell/atuin.xsh b/crates/atuin/src/shell/atuin.xsh
index 7c1b1f5d..0ea9514e 100644
--- a/crates/atuin/src/shell/atuin.xsh
+++ b/crates/atuin/src/shell/atuin.xsh
@@ -5,7 +5,8 @@ from prompt_toolkit.filters import Condition
 from prompt_toolkit.keys import Keys
 
 
-$ATUIN_SESSION=$(atuin uuid).rstrip('\n')
+if "ATUIN_SESSION" not in ${...}:
+    $ATUIN_SESSION=$(atuin uuid).rstrip('\n')
 
 @events.on_precommand
 def _atuin_precommand(cmd: str):
diff --git a/crates/atuin/src/shell/atuin.zsh b/crates/atuin/src/shell/atuin.zsh
index 0e7d79e9..562148d9 100644
--- a/crates/atuin/src/shell/atuin.zsh
+++ b/crates/atuin/src/shell/atuin.zsh
@@ -25,7 +25,9 @@ else
     ZSH_AUTOSUGGEST_STRATEGY=("atuin")
 fi
 
-export ATUIN_SESSION=$(atuin uuid)
+if [[ -z "${ATUIN_SESSION:-}" ]]; then
+    export ATUIN_SESSION=$(atuin uuid)
+fi
 ATUIN_HISTORY_ID=""
 
 _atuin_preexec() {
-- 
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