From 1f3a3b41f785d10906678394d13c180657d35210 Mon Sep 17 00:00:00 2001
From: Jon Parise <jon@indelible.org>
Date: Wed, 18 Mar 2026 09:53:29 -0400
Subject: [PATCH] bash: handle PROMPT_COMMAND ending in a newline
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We need to handle on more case: when an existing PROMPT_COMMAND ends in
a newline, we don't want to append a ; because that already counts as a
command separator.

We now handle all of these PROMPT_COMMAND cases:

- Ends with ; — no ; added
- Ends with \n or other whitespace — no ; added
- Ends with a command name — ; added as separator

See: #11245
---
 src/shell-integration/bash/ghostty.bash | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/shell-integration/bash/ghostty.bash b/src/shell-integration/bash/ghostty.bash
index 4be662ddf..667d7c86b 100644
--- a/src/shell-integration/bash/ghostty.bash
+++ b/src/shell-integration/bash/ghostty.bash
@@ -303,7 +303,7 @@ if (( BASH_VERSINFO[0] > 4 || (BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] >= 4) )
     elif [[ $(builtin declare -p PROMPT_COMMAND 2>/dev/null) == "declare -a "* ]]; then
       PROMPT_COMMAND+=(__ghostty_hook)
     else
-      [[ "${PROMPT_COMMAND}" =~ \;[[:space:]]*$ ]] || PROMPT_COMMAND+=";"
+      [[ "${PROMPT_COMMAND}" =~ (\;[[:space:]]*|$'\n')$ ]] || PROMPT_COMMAND+=";"
       PROMPT_COMMAND+=" __ghostty_hook"
     fi
   fi