feat: the path argument is now variadic

[drupol]

This PR

• the path argument is variadic

Fix #6

[drupol]

@wolfgangwalther Feel free to review it :)

[wolfgangwalther]

Diff looks good, but something doesn't quite work, yet, I think.

I put this PR's rev into the treefmt-mdcr-nixpkgs PR and removed the script. mdcr takes multiple files and doesn't complain about that, OK. Some files are formatted well. But others are not, and I get strange syntax errors.... but rightly so. I think I just found out that my bash wrapper didn't work properly, yet :D

Still something is odd in the log output:

[2025-07-22T15:33:38Z ERROR mdcr::runner] The command `nixfmt ` returned a non-zero exit status (1) for preset `nixfmt` in `nixos/doc/manual/administration/service-mgmt.chapter.md:127-140`, `<stdin>:1:28:
      |
    1 | systemd.services.myservice = {
      |                            ^
    unexpected '='
    expecting "or", '.', end of input, operator, or term`
[2025-07-22T15:33:38Z ERROR mdcr] Error processing nixos/doc/manual/administration/service-mgmt.chapter.md:

The order of log outputs, the second line ("Error processing ...:") should come first, I think? Otherwise the : doesn't make sense.

[drupol]

Fixed, try again please.

[wolfgangwalther]

I think I just found out that my bash wrapper didn't work properly, yet :D

Or maybe not. I think the previous version didn't report syntax errors properly (aka, at all)? Looks like the error logging was only really added here?

[drupol]

I think I just found out that my bash wrapper didn't work properly, yet :D

Or maybe not. I think the previous version didn't report syntax errors properly (aka, at all)? Looks like the error logging was only really added here?

It should not, the logging hasn't changed, please try again and let me know.

[wolfgangwalther]

Ah my basc script needed set -e... now the current nixpkgs' version is reporting errors as well. Will try your latest branch again now.

[wolfgangwalther]

Works for me! Thank you ❤️!