vscode-ipc.sh

#!/usr/bin/env bash
# File: vscode  —  tiny wrapper around the official `code` CLI
# Usage:
#   vscode open <file>
#   vscode diff <left> <right> [title]
#   vscode cmd  <commandId> [jsonArgs]

set -euo pipefail
sub=${1:-}; shift || true

case "$sub" in
  open)
        [[ $# -eq 1 ]] || { echo "open: need <file>" >&2; exit 1; }
        exec code --reuse-window "$1"
        ;;
  diff)
        [[ $# -ge 2 ]] || { echo "diff: need <left> <right> [title]" >&2; exit 1; }
        left=$1 right=$2 title=${3:-}
        exec code --diff "$left" "$right" ${title:+--title "$title"} --reuse-window
        ;;
  cmd)
        [[ $# -ge 1 ]] || { echo "cmd: need <commandId> [jsonArgs]" >&2; exit 1; }
        cmdId=$1; shift || true
        # any remaining arg is passed as JSON string to the command
        exec code --command "$cmdId" ${1:+"$1"} --reuse-window
        ;;
  *)
        cat <<EOF >&2
usage: vscode {open|diff|cmd} [...]
open <file>               – open file in current VS Code window
diff <left> <right> [t]   – side-by-side diff
cmd  <commandId> [json]   – run arbitrary VS Code command
EOF
        exit 1
        ;;
esac