'id -a' argument not found

[seb128]

On Ubuntu using 0.2.2-0ubuntu1

# id -a
error: unexpected argument '-a' found

  tip: to pass '-a' as a value, use '-- -a'

Usage: id [OPTION]... [USER]...

For more information, try '--help'.

it works with the gnu coreutils and breaking some of our package tests, example report https://bugs.launchpad.net/ubuntu/+source/rust-coreutils/+bug/2125578 where the tests are doing printf "Running as: "; id -a

[erammos]

I'd like to work on this.

[julian-klode]

Turns out -a is just a no-op

[julian-klode]

So I have this:

diff --git a/src/uu/id/src/id.rs b/src/uu/id/src/id.rs
index 7c1e1c12..a69ae71e 100644
--- a/src/uu/id/src/id.rs
+++ b/src/uu/id/src/id.rs
@@ -69,6 +69,7 @@ fn get_context_help_text() -> String {
 }

 mod options {
+    pub const OPT_A: &str = "a"; // GNU compat option
     pub const OPT_AUDIT: &str = "audit"; // GNU's id does not have this
     pub const OPT_CONTEXT: &str = "context";
     pub const OPT_EFFECTIVE_USER: &str = "user";
@@ -353,6 +354,12 @@ pub fn uu_app() -> Command {
         .infer_long_args(true)
         .args_override_self(true)
         .after_help(translate!("id-after-help"))
+        .arg(
+            Arg::new(options::OPT_A)
+                .short('a')
+                .hide(true)
+                .action(ArgAction::SetTrue),
+        )
         .arg(
             Arg::new(options::OPT_AUDIT)
                 .short('A')

and that works but it probably should have tests and you may want it differently, but it's enough to work-around the issue on Ubuntu (which is like a thing to do in the next 30 minutes)