Mutate arguments at std::process::Command #87379

Feature gate: #![feature(mutate_command_args)]

This is a tracking issue for adding an API to mutate the arguments of std::process::Command.
Discussed earlier in https://internals.rust-lang.org/t/lack-of-api-mutating-args-at-std-command/14908

Public API

// std::process::Command

pub fn args_clear(&mut self) -> &mut Command;

pub fn arg_set<S>(&mut self, index: usize, value: S) -> &mut Command
where
    S: AsRef<OsStr>;

// maybe for convenience (same as .args_clear().args(new_args)):
pub fn args_new<I, S>(&mut self, args: I) -> &mut Command
where
    I: IntoIterator<Item = S>,
    S: AsRef<OsStr>;

arg_set() may panic when the index is out of range, only existing elements get replaced.

Steps / History

• Implementation:
  • Unix Implementation
  • Other Platforms
• Final comment period (FCP)
• Stabilization PR

Unresolved Questions

• None yet.