Description

Fixes #10300 , where using variables didnt work with ucp as it was only expecting a Expr::FilePath.

Before: (from the issue)

❯ ucp -r $var $folder
Error:   × Missing file operand
   ╭─[entry #40:1:1]
 1 │ ucp -r $var $folder
   · ─┬─
   ·  ╰── Missing file operand
   ╰────
  help: Please provide source and destination paths

Now:

`ucp -r $var $folder`
# success

Also added the test to ensure its working:) . Oh, and I tweaked again slightly the messages on two tests because now the whole path is printed rather than a. Say:

#before
`cp a a` --> 'a' and 'a' are the same file 
# now
`cp a a` --> /home/current/location/a and /home/current/location/a are the same file

User-Facing Changes

Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

• cargo fmt --all -- --check to check standard code formatting (cargo fmt --all applies these changes)
• cargo clippy --workspace -- -D warnings -D clippy::unwrap_used to check that you're using the standard code style
• cargo test --workspace to check that all tests pass (on Windows make sure to enable developer mode)
• cargo run -- -c "use std testing; testing run-tests --path crates/nu-std" to run the tests for the standard library

After Submitting