Some times `add_binary` is used to add non-binaries. Most of the time it's unintentional, but since there's now a special behaviour for scripts that warns if the interpreter is missing, it may now be desirable to add scripts with `add_binary` instead of `add_file`. The particular case that comes to mind is `add_runscript`: ```bash add_file "$script" "/hooks/$hookname" 755 ``` That could be replaced with `add_binary` to produce warnings if `/usr/bin/ash` is missing (i.e. if the base `hook` or _something else_ is missing). Since runtime hook are not stored executable, we need `add_binary` to implement support for a third parameter for _mode_.