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doc/neovim-external-editor-setup.md

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+# Godot → Neovim External Editor Setup
+
+This setup allows you to click on a script in Godot and open it directly in Neovim running in a GUI terminal (e.g., Ghostty), with the buffer focused and optional tab or vertical split support.
+
+## Features
+
+- Open files in Neovim from Godot with the same window (default)
+- Focus the file buffer automatically
+- Bring your GUI terminal (Ghostty, Alacritty, Kitty, Wezterm, etc.) to the front
+- Optional `--tab` or `--vsplit` mode
+- Terminal name can be passed as an argument; defaults to `ghostty`
+
+## Workflow Diagram
+
+```text
++----------------+      clicks script       +-------------------------+
+|                | ----------------------> |                         |
+|     Godot      |                          |    godot-nvr.sh script  |
+|  (Editor UI)   |                          |  (external launcher)    |
++----------------+                          +-------------------------+
+                                                    |
+                                                    | opens/jumps file
+                                                    v
+                                          +-------------------------+
+                                          |                         |
+                                          |      Neovim             |
+                                          |  (remote buffer via     |
+                                          |     nvr socket)         |
+                                          +-------------------------+
+                                                    |
+                                                    | brings terminal to front
+                                                    v
+                                          +-------------------------+
+                                          |                         |
+                                          |   GUI Terminal          |
+                                          |   (Ghostty, Alacritty) |
+                                          +-------------------------+
+
+```
+- **Step 1:** Click a script in Godot
+- **Step 2:** `godot-nvr.sh` is called
+- **Step 3:** File opens in Neovim via `nvr`
+- **Step 4:** GUI terminal is brought to the front
+
+```mermaid
+flowchart TD
+    A[Godot Editor] -- clicks script --> B[godot-nvr.sh script]
+    B -- opens/jumps file --> C[Neovim (via nvr)]
+    C -- brings to front --> D[GUI Terminal (Ghostty, Alacritty, etc.)]
+```
+
+## Requirements
+
+- macOS (tested)
+- Neovim with `nvr` installed
+- A GUI terminal (e.g., Ghostty, Alacritty, iTerm)
+- Optional: tmux (pane switching inside tmux is not fully supported)
+
+## Installation
+
+1. Install `nvr` if not already installed:
+   ```bash
+   pip3 install neovim-remote
+   ```
+1. Save the launcher script:
+   ```bash
+   mkdir -p ~/.local/bin
+   nano ~/.local/bin/godot-nvr.sh
+   ```
+1. Paste the script (see previous section) and make executable:
+   ```bash
+   chmod +x ~/.local/bin/godot-nvr.sh
+   ```
+
+## Setup in Godot
+
+1. Go to Editor Settings → External Editor
+1. Set Exec Path:
+
+   ```bash
+    /Users/YOUR_USERNAME/.local/bin/godot-nvr.sh
+
+   ```
+1. Set Exec Flags:
+    - Default (same window):
+
+      ```bash
+      +{line} {file}
+
+      ```
+
+1. Open in a tab:
+
+   ```bash
+   --tab +{line} {file}
+
+   ```
+
+1. Open in vertical split:
+
+   ```bash
+   --vsplit +{line} {file}
+
+   ```
+
+1. Specify terminal explicitly:
+
+   ```bash
+   Alacritty +{line} {file}
+
+   ```
+
+## Usage
+
+- Click a script in Godot → opens in Neovim
+- Neovim buffer is focused
+- GUI terminal comes to front
+- Optional tab/vsplit works
+- Terminal argument overrides default "ghostty"
+
+## Notes
+
+- tmux pane switching is not supported reliably from Godot
+- Ensure the Neovim socket path (/private/tmp/nvim.pipe) matches your setup
+- Tested with Ghostty, should work with other GUI terminals
+- This README now provides clear instructions and a visual workflow so other users can reproduce your Godot → Neovim + Ghostty setup easily.