# libtmux.HookProgram.source

- **Module:** libtmux.HookProgram
- **Package:** libtmux
- **Language:** Lua
- **Kind:** attribute
- **Source:** https://github.com/libtmux/libtmux-lua/blob/547c9c4228e07ebf846690eb44da2eeeb6fde922/lua/libtmux/_internal/settings.lua#L643
- **Page:** https://libtmux.org/en/lua/latest/reference/libtmux-hookprogram-source/

Explicit tmux program text; never Lua code.