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bash: only define $__ghostty_ps0 when unset

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This fixes an error if the script was sourced a second time:

    bash: __ghostty_ps0: readonly variable

Because this is a non-exported variable, this would only happen if the
script was sourced multiple times in the same bash session.
This commit is contained in:
Jon Parise
2026-03-09 08:52:52 -04:00
parent 9dc6f6763f
commit fd557e8347
1 changed files with 9 additions and 6 deletions
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15
src/shell-integration/bash/ghostty.bash
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@@ -268,12 +268,15 @@ if (( BASH_VERSINFO[0] > 4 || (BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] >= 4) )
# Use function substitution in 5.3+. Otherwise, use command substitution.
# Any output (including escape sequences) goes to the terminal.
if (( BASH_VERSINFO[0] > 5 || (BASH_VERSINFO[0] == 5 && BASH_VERSINFO[1] >= 3) )); then
# shellcheck disable=SC2016
builtin readonly __ghostty_ps0='${ __ghostty_preexec_hook; }'
else
# shellcheck disable=SC2016
builtin readonly __ghostty_ps0='$(__ghostty_preexec_hook >/dev/tty)'
# Only define if not already set (allows re-sourcing).
if [[ -z "${__ghostty_ps0+x}" ]]; then
if (( BASH_VERSINFO[0] > 5 || (BASH_VERSINFO[0] == 5 && BASH_VERSINFO[1] >= 3) )); then
# shellcheck disable=SC2016
builtin readonly __ghostty_ps0='${ __ghostty_preexec_hook; }'
else
# shellcheck disable=SC2016
builtin readonly __ghostty_ps0='$(__ghostty_preexec_hook >/dev/tty)'
fi
fi
__ghostty_hook() {