feat: finish ghostty pane backend integration

1 files changed, 324 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/src/shell-integration/bash/ghostty.bash b/vendor/libghostty-vt/src/shell-integration/bash/ghostty.bash
new file mode 100644
index 00000000..7eaf1397
--- /dev/null
+++ b/vendor/libghostty-vt/src/shell-integration/bash/ghostty.bash
@@ -0,0 +1,324 @@
+# Parts of this script are based on Kitty's bash integration. Kitty is
+# distributed under GPLv3, so this file is also distributed under GPLv3.
+# The license header is reproduced below:
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# We need to be in interactive mode to proceed.
+if [[ "$-" != *i* ]]; then builtin return; fi
+
+# When automatic shell integration is active, we were started in POSIX
+# mode and need to manually recreate the bash startup sequence.
+if [ -n "$GHOSTTY_BASH_INJECT" ]; then
+  # Store a temporary copy of our startup flags and unset these global
+  # environment variables so we can safely handle reentrancy.
+  builtin declare __ghostty_bash_flags="$GHOSTTY_BASH_INJECT"
+  builtin unset ENV GHOSTTY_BASH_INJECT
+
+  # Restore an existing ENV that was replaced by the shell integration code.
+  if [[ -n "$GHOSTTY_BASH_ENV" ]]; then
+    builtin export ENV=$GHOSTTY_BASH_ENV
+    builtin unset GHOSTTY_BASH_ENV
+  fi
+
+  # Restore bash's default 'posix' behavior. Also reset 'inherit_errexit',
+  # which doesn't happen as part of the 'posix' reset.
+  builtin set +o posix
+  builtin shopt -u inherit_errexit 2>/dev/null
+
+  # Unexport HISTFILE if it was set by the shell integration code.
+  if [[ -n "$GHOSTTY_BASH_UNEXPORT_HISTFILE" ]]; then
+    builtin export -n HISTFILE
+    builtin unset GHOSTTY_BASH_UNEXPORT_HISTFILE
+  fi
+
+  # Manually source the startup files. See INVOCATION in bash(1) and
+  # run_startup_files() in shell.c in the Bash source code.
+  if builtin shopt -q login_shell; then
+    if [[ $__ghostty_bash_flags != *"--noprofile"* ]]; then
+      [ -r /etc/profile ] && builtin source "/etc/profile"
+      for __ghostty_rcfile in "$HOME/.bash_profile" "$HOME/.bash_login" "$HOME/.profile"; do
+        [ -r "$__ghostty_rcfile" ] && {
+          builtin source "$__ghostty_rcfile"
+          break
+        }
+      done
+    fi
+  else
+    if [[ $__ghostty_bash_flags != *"--norc"* ]]; then
+      # The location of the system bashrc is determined at bash build
+      # time via -DSYS_BASHRC and can therefore vary across distros:
+      #  Arch, Debian, Ubuntu use /etc/bash.bashrc
+      #  Fedora uses /etc/bashrc sourced from ~/.bashrc instead of SYS_BASHRC
+      #  Void Linux uses /etc/bash/bashrc
+      #  Nixos uses /etc/bashrc
+      for __ghostty_rcfile in /etc/bash.bashrc /etc/bash/bashrc /etc/bashrc; do
+        [ -r "$__ghostty_rcfile" ] && {
+          builtin source "$__ghostty_rcfile"
+          break
+        }
+      done
+      if [[ -z "$GHOSTTY_BASH_RCFILE" ]]; then GHOSTTY_BASH_RCFILE="$HOME/.bashrc"; fi
+      [ -r "$GHOSTTY_BASH_RCFILE" ] && builtin source "$GHOSTTY_BASH_RCFILE"
+    fi
+  fi
+
+  builtin unset __ghostty_rcfile
+  builtin unset __ghostty_bash_flags
+  builtin unset GHOSTTY_BASH_RCFILE
+fi
+
+# Add Ghostty binary to PATH if the path feature is enabled
+if [[ "$GHOSTTY_SHELL_FEATURES" == *"path"* && -n "$GHOSTTY_BIN_DIR" ]]; then
+  if [[ ":$PATH:" != *":$GHOSTTY_BIN_DIR:"* ]]; then
+    export PATH="$PATH:$GHOSTTY_BIN_DIR"
+  fi
+fi
+
+# Sudo
+if [[ "$GHOSTTY_SHELL_FEATURES" == *"sudo"* && -n "$TERMINFO" ]]; then
+  # Wrap `sudo` command to ensure Ghostty terminfo is preserved.
+  #
+  # This approach supports wrapping a `sudo` alias, but the alias definition
+  # must come _after_ this function is defined. Otherwise, the alias expansion
+  # will take precedence over this function, and it won't be wrapped.
+  function sudo {
+    builtin local sudo_has_sudoedit_flags="no"
+    for arg in "$@"; do
+      # Check if argument is '-e' or '--edit' (sudoedit flags)
+      if [[ "$arg" == "-e" || $arg == "--edit" ]]; then
+        sudo_has_sudoedit_flags="yes"
+        builtin break
+      fi
+      # Check if argument is neither an option nor a key-value pair
+      if [[ "$arg" != -* && "$arg" != *=* ]]; then
+        builtin break
+      fi
+    done
+    if [[ "$sudo_has_sudoedit_flags" == "yes" ]]; then
+      builtin command sudo "$@"
+    else
+      builtin command sudo --preserve-env=TERMINFO "$@"
+    fi
+  }
+fi
+
+# SSH Integration
+if [[ "$GHOSTTY_SHELL_FEATURES" == *ssh-* ]]; then
+  function ssh() {
+    builtin local ssh_term ssh_opts
+    ssh_term="xterm-256color"
+    ssh_opts=()
+
+    # Configure environment variables for remote session
+    if [[ "$GHOSTTY_SHELL_FEATURES" == *ssh-env* ]]; then
+      ssh_opts+=(-o "SendEnv COLORTERM TERM_PROGRAM TERM_PROGRAM_VERSION")
+    fi
+
+    # Install terminfo on remote host if needed
+    if [[ "$GHOSTTY_SHELL_FEATURES" == *ssh-terminfo* ]]; then
+      builtin local ssh_user ssh_hostname
+
+      while IFS=' ' read -r ssh_key ssh_value; do
+        case "$ssh_key" in
+        user) ssh_user="$ssh_value" ;;
+        hostname) ssh_hostname="$ssh_value" ;;
+        esac
+        [[ -n "$ssh_user" && -n "$ssh_hostname" ]] && break
+      done < <(builtin command ssh -G "$@" 2>/dev/null)
+
+      if [[ -n "$ssh_hostname" ]]; then
+        builtin local ssh_target="${ssh_user}@${ssh_hostname}"
+
+        # Check if terminfo is already cached
+        if "$GHOSTTY_BIN_DIR/ghostty" +ssh-cache --host="$ssh_target" >/dev/null 2>&1; then
+          ssh_term="xterm-ghostty"
+        elif builtin command -v infocmp >/dev/null 2>&1; then
+          builtin local ssh_terminfo ssh_cpath_dir ssh_cpath
+
+          ssh_terminfo=$(infocmp -0 -x xterm-ghostty 2>/dev/null)
+
+          if [[ -n "$ssh_terminfo" ]]; then
+            builtin echo "Setting up xterm-ghostty terminfo on $ssh_hostname..." >&2
+
+            ssh_cpath_dir=$(mktemp -d "/tmp/ghostty-ssh-$ssh_user.XXXXXX" 2>/dev/null) || ssh_cpath_dir="/tmp/ghostty-ssh-$ssh_user.$$"
+            ssh_cpath="$ssh_cpath_dir/socket"
+
+            if builtin echo "$ssh_terminfo" | builtin command ssh -o ControlMaster=yes -o ControlPath="$ssh_cpath" -o ControlPersist=60s "$@" '
+              infocmp xterm-ghostty >/dev/null 2>&1 && exit 0
+              command -v tic >/dev/null 2>&1 || exit 1
+              mkdir -p ~/.terminfo 2>/dev/null && tic -x - 2>/dev/null && exit 0
+              exit 1
+            ' 2>/dev/null; then
+              ssh_term="xterm-ghostty"
+              ssh_opts+=(-o "ControlPath=$ssh_cpath")
+
+              # Cache successful installation
+              "$GHOSTTY_BIN_DIR/ghostty" +ssh-cache --add="$ssh_target" >/dev/null 2>&1 || true
+            else
+              builtin echo "Warning: Failed to install terminfo." >&2
+            fi
+          else
+            builtin echo "Warning: Could not generate terminfo data." >&2
+          fi
+        else
+          builtin echo "Warning: ghostty command not available for cache management." >&2
+        fi
+      fi
+    fi
+
+    # Execute SSH with TERM environment variable
+    TERM="$ssh_term" COLORTERM=truecolor builtin command ssh "${ssh_opts[@]}" "$@"
+  }
+fi
+
+# This is set to 1 when we're executing a command so that we don't
+# send prompt marks multiple times.
+_ghostty_executing=""
+_ghostty_last_reported_cwd=""
+
+function __ghostty_precmd() {
+  local ret="$?"
+  if test "$_ghostty_executing" != "0"; then
+    _GHOSTTY_SAVE_PS1="$PS1"
+    _GHOSTTY_SAVE_PS2="$PS2"
+
+    # Use 133;P (not 133;A) inside PS1 to avoid fresh-line behavior on
+    # readline redraws (e.g., vi mode switches, Ctrl-L). The initial
+    # 133;A with fresh-line is emitted once via printf below.
+    PS1='\[\e]133;P;k=i\a\]'$PS1'\[\e]133;B\a\]'
+    PS2='\[\e]133;P;k=s\a\]'$PS2'\[\e]133;B\a\]'
+
+    # Bash doesn't redraw the leading lines in a multiline prompt so we mark
+    # the start of each line (after each newline) as a secondary prompt. This
+    # correctly handles multiline prompts by setting the first to primary and
+    # the subsequent lines to secondary.
+    #
+    # We only replace the \n prompt escape, not literal newlines ($'\n'),
+    # because literal newlines may appear inside $(...) command substitutions
+    # where inserting escape sequences would break shell syntax.
+    if [[ "$PS1" == *"\n"* ]]; then
+      PS1="${PS1//\\n/\\n$'\\[\\e]133;P;k=s\\a\\]'}"
+    fi
+
+    # Cursor
+    if [[ "$GHOSTTY_SHELL_FEATURES" == *"cursor"* ]]; then
+      builtin local cursor=5  # blinking bar
+      [[ "$GHOSTTY_SHELL_FEATURES" == *"cursor:steady"* ]] && cursor=6  # steady bar
+
+      [[ "$PS1" != *"\[\e[${cursor} q\]"* ]] && PS1=$PS1"\[\e[${cursor} q\]"
+      [[ "$PS0" != *'\[\e[0 q\]'* ]] && PS0=$PS0'\[\e[0 q\]' # reset
+    fi
+
+    # Title (working directory)
+    if [[ "$GHOSTTY_SHELL_FEATURES" == *"title"* ]]; then
+      PS1=$PS1'\[\e]2;\w\a\]'
+    fi
+  fi
+
+  if test "$_ghostty_executing" != ""; then
+    # End of current command. Report its status.
+    builtin printf "\e]133;D;%s;aid=%s\a" "$ret" "$BASHPID"
+  fi
+
+  # Fresh line and start of prompt. When ble.sh is active, emit 133;P instead
+  # of 133;A because ble.sh maintains its own cursor position tracking. 133;A's
+  # cursor movement (CR+LF when not at column 0) is invisible to ble.sh and
+  # desyncs its position state, causing display artifacts like duplicate
+  # prompts. See: https://github.com/akinomyoga/ble.sh/issues/684
+  if [[ -n "${BLE_VERSION-}" ]]; then
+    builtin printf "\e]133;P;k=i\a"
+  else
+    builtin printf "\e]133;A;redraw=last;cl=line;aid=%s\a" "$BASHPID"
+  fi
+
+  # unfortunately bash provides no hooks to detect cwd changes
+  # in particular this means cwd reporting will not happen for a
+  # command like cd /test && cat. PS0 is evaluated before cd is run.
+  if [[ "$_ghostty_last_reported_cwd" != "$PWD" ]]; then
+    _ghostty_last_reported_cwd="$PWD"
+    builtin printf "\e]7;kitty-shell-cwd://%s%s\a" "$HOSTNAME" "$PWD"
+  fi
+
+  _ghostty_executing=0
+}
+
+function __ghostty_preexec() {
+  builtin local cmd="$1"
+
+  PS1="$_GHOSTTY_SAVE_PS1"
+  PS2="$_GHOSTTY_SAVE_PS2"
+
+  # Title (current command)
+  if [[ -n $cmd && "$GHOSTTY_SHELL_FEATURES" == *"title"* ]]; then
+    builtin printf "\e]2;%s\a" "${cmd//[[:cntrl:]]/}"
+  fi
+
+  # End of input, start of output.
+  builtin printf "\e]133;C;\a"
+  _ghostty_executing=1
+}
+
+if (( BASH_VERSINFO[0] > 4 || (BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] >= 4) )); then
+  __ghostty_preexec_hook() {
+    builtin local cmd
+    cmd=$(LC_ALL=C HISTTIMEFORMAT='' builtin history 1)
+    cmd="${cmd#*[[:digit:]][* ] }"  # remove leading history number
+    [[ -n "$cmd" ]] && __ghostty_preexec "$cmd"
+  }
+
+  __ghostty_hook() {
+    builtin local ret=$?
+    __ghostty_precmd "$ret"
+
+    # Append preexec hook to PS0 if not already present.
+    # Use function substitution in 5.3+, otherwise command substitution.
+    if [[ "$PS0" != *"__ghostty_preexec_hook"* ]]; then
+      if (( BASH_VERSINFO[0] > 5 || (BASH_VERSINFO[0] == 5 && BASH_VERSINFO[1] >= 3) )); then
+        # shellcheck disable=SC2016
+        PS0+='${ __ghostty_preexec_hook; }'
+      else
+        # shellcheck disable=SC2016
+        PS0+='$(__ghostty_preexec_hook >/dev/tty)'
+      fi
+    fi
+  }
+
+  # Append our hook to PROMPT_COMMAND, preserving its existing type.
+  #
+  # The 2>/dev/null suppresses "command not found" in subshells that inherit
+  # PROMPT_COMMAND without the function definition. This also silences any
+  # errors from inside __ghostty_hook itself, but those are all terminal escape
+  # sequences and non-actionable.
+  #
+  # shellcheck disable=SC2128,SC2178,SC2179
+  if [[ ";${PROMPT_COMMAND[*]:-};" != *";__ghostty_hook 2>/dev/null;"* ]]; then
+    if [[ -z "${PROMPT_COMMAND[*]}" ]]; then
+      if (( BASH_VERSINFO[0] > 5 || (BASH_VERSINFO[0] == 5 && BASH_VERSINFO[1] >= 1) )); then
+        PROMPT_COMMAND=("__ghostty_hook 2>/dev/null")
+      else
+        PROMPT_COMMAND="__ghostty_hook 2>/dev/null"
+      fi
+    elif [[ $(builtin declare -p PROMPT_COMMAND 2>/dev/null) == "declare -a "* ]]; then
+      PROMPT_COMMAND+=("__ghostty_hook 2>/dev/null")
+    else
+      [[ "${PROMPT_COMMAND}" =~ (\;[[:space:]]*|$'\n')$ ]] || PROMPT_COMMAND+=";"
+      PROMPT_COMMAND+="__ghostty_hook 2>/dev/null"
+    fi
+  fi
+else
+  builtin source "$(dirname -- "${BASH_SOURCE[0]}")/bash-preexec.sh"
+  preexec_functions+=(__ghostty_preexec)
+  precmd_functions+=(__ghostty_precmd)
+fi