commandspec 0.12.2

Rust macro to build std::process::Command objects with shell syntax. Uses macro_rules! and works on stable.
Documentation 
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#[macro_export]
macro_rules! command {
    ($fmt:expr) => ( command!($fmt,) );
    ($fmt:expr, $( $id:ident = $value:expr ),* $(,)*) => (
        {
            $crate::commandify(
                format!($fmt, $( $id = $crate::command_arg(&$value) ),*)
            )
        }
    );
}


#[macro_export]
macro_rules! execute {
    ($fmt:expr) => ( execute!($fmt,) );
    ($fmt:expr, $( $id:ident = $value:expr ),* $(,)*) => (
        {
            use $crate::{CommandSpecExt};
            command!($fmt, $( $id = $value ),*).unwrap().execute()
        }
    );
}

#[macro_export]
macro_rules! sh_command {
    ($fmt:expr) => ( sh_command!($fmt,) );
    ($fmt:expr, $( $id:ident = $value:expr ),* $(,)*) => (
        $crate::commandify(
            format!(
                "sh -c {}",
                $crate::command_arg(
                    &format!("set -e\n\n{}", format!($fmt, $( $id = $crate::command_arg(&$value) ,)*)),
                ),
            )
        )
    );
}

#[macro_export]
macro_rules! sh_execute {
    ($fmt:expr) => ( sh_execute!($fmt,) );
    ($fmt:expr, $( $id:ident = $value:expr ),* $(,)*) => (
        {
            use $crate::{CommandSpecExt};
            sh_command!($fmt, $( $id = $value ),*).unwrap().execute()
        }
    );
}