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Windows: Quote more batch file arguments #108218

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Feb 23, 2023
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Windows: Quote more batch file arguments #108218

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11 changes: 10 additions & 1 deletion library/std/src/sys/windows/args.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -270,7 +270,7 @@ pub(crate) fn make_bat_command_line(
// It is necessary to surround the command in an extra pair of quotes,
// hence the trailing quote here. It will be closed after all arguments
// have been added.
let mut cmd: Vec<u16> = "cmd.exe /c \"".encode_utf16().collect();
let mut cmd: Vec<u16> = "cmd.exe /d /c \"".encode_utf16().collect();

// Push the script name surrounded by its quote pair.
cmd.push(b'"' as u16);
Expand All @@ -290,6 +290,15 @@ pub(crate) fn make_bat_command_line(
// reconstructed by the batch script by default.
for arg in args {
cmd.push(' ' as u16);
// Make sure to always quote special command prompt characters, including:
// * Characters `cmd /?` says require quotes.
// * `%` for environment variables, as in `%TMP%`.
// * `|<>` pipe/redirect characters.
const SPECIAL: &[u8] = b"\t &()[]{}^=;!'+,`~%|<>";
let force_quotes = match arg {
Arg::Regular(arg) if !force_quotes => arg.bytes().iter().any(|c| SPECIAL.contains(c)),
_ => force_quotes,
};
append_arg(&mut cmd, arg, force_quotes)?;
}

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