feat: emit empty lines without trailing whitespace

[drupol]

This PR

• emit empty lines without trailing whitespace

fix #7

[drupol]

@wolfgangwalther Feel free to review it :)

[wolfgangwalther]

I'd like to try this when #8 is merged and this branch rebased on it. That's easier with the override I already have.

[drupol]

Here you go, let me know how it goes, after that I think this project will deserve a tag.

[wolfgangwalther]

I get a test failure on this branch when building:

       last 25 log lines:
       > test test_invalid_config_fails_with_error ... ok
       > test test_multiple_code_blocks ... ok
       > test test_multiple_files_in_dir_one_is_fixed ... FAILED
       > test test_multiple_files_in_dir_one_with_issue ... ok
       > test test_no_code_blocks_means_no_changes ... ok
       > test test_output_mode_check_fails_on_error ... ok
       > test test_prints_warning_on_failure ... ok
       > test test_rewrites_code_block ... ok
       > test test_unsupported_language_is_skipped ... ok
       >
       > failures:
       >
       > ---- test_multiple_files_in_dir_one_is_fixed stdout ----
       >
       > thread 'test_multiple_files_in_dir_one_is_fixed' panicked at tests/tests.rs:454:5:
       > assertion failed: output.status.success()
       > note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
       >
       >
       > failures:
       >     test_multiple_files_in_dir_one_is_fixed
       >
       > test result: FAILED. 13 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.62s
       >
       > error: test failed, to rerun pass `--test tests`
       For full logs, run 'nix log /nix/store/4g9yr6d2h28x28x8hml7g5s07m47i40f-markdown-code-runner-0-unstable-2025-07-22.drv'.

[wolfgangwalther]

After disabling the checkPhase, I ran it, but this doesn't work for me, yet.

Should the trimming happen after the indent step here? I think it should!

[wolfgangwalther]

Or put differently: Only indent, when the line is non-empty?

[drupol]

I updated it, it would be super great if you could give me some feedback to get this done.

[wolfgangwalther]

on it

[wolfgangwalther]

Yes, this works!

[drupol]

Waiting for a last confirmation from you and merging this.

[wolfgangwalther]

cargo-fmt doesn't like it, yet, but I tested and confirmed again: Still works as expected!

[drupol]

Excellent !