//! Git style prompting with support for `GIT_ASKPASS` and `askpass` program configuration.//!//! ### Compatibility//!//! This is a unix-only crate which will return with an error when trying to obtain any prompt on other platforms.//! On those platforms it is common to have helpers which perform this task so it shouldn't be a problem.#![deny(rust_2018_idioms, missing_docs)]#![forbid(unsafe_code)] /// The error returned by [ask()].#[derive(Debug, thiserror::Error)]#[allow(missing_docs)]pub enum Error {    #[error("The current platform has no implementation for prompting in the terminal")]    UnsupportedPlatform,    #[error("Failed to open terminal at {:?} for writing prompt, or to write it", unix::TTY_PATH)]    TtyIo(#[from] std::io::Error),    #[cfg(unix)]    #[error("Failed to obtain or set terminal configuration")]    TerminalConfiguration(#[from] nix::errno::Errno),} /// The options used in `[ask()]`.#[derive(Default, Copy, Clone)]pub struct Options {    /// If true, what's prompted is a secret and thus should be hidden.    pub secret: bool,} ///pub mod unix;#[cfg(unix)]use unix::imp; #[cfg(not(unix))]mod imp {    use crate::{Error, Options};     pub(crate) fn ask(_prompt: &str, _opts: Options) -> Result<String, Error> {        Err(Error::UnsupportedPlatform)    }} /// Ask the user given a `prompt`, returning the result.pub fn ask(prompt: &str, opts: Options) -> Result<String, Error> {    imp::ask(prompt, opts)} /// Ask for information typed by the user into the terminal after showing the prompt`, like `"Username: `.pub fn openly(prompt: impl AsRef<str>) -> Result<String, Error> {    imp::ask(prompt.as_ref(), Options { secret: false })} /// Ask for information _securely_ after showing the `prompt` (like `"password: "`) by not showing what's typed.pub fn securely(prompt: impl AsRef<str>) -> Result<String, Error> {    imp::ask(prompt.as_ref(), Options { secret: true })}