rcFileFor function
Best-effort rc file path shown to the user for shell (display only).
Implementation
String rcFileFor(String shell) {
final name = shell.split(Platform.pathSeparator).last.toLowerCase();
if (name.contains('zsh')) return '~/.zshrc';
if (name.contains('bash')) return '~/.bashrc';
if (name.contains('fish')) return '~/.config/fish/config.fish';
return '~/.profile';
}