Hi @tomtung
You recently introduced the feature that unknown commands are preserved.
However, parameters in braces are removed from the brace environment or empty braces are stripped.
We discussed this at the JabRef dev call and came to the conclusion that it would be beneficial if the commands are just kept as they are if they are unknown.
I added a few tests that show the intended behavior.
Could you help us in bringing this into Scala code?
Or in general, do you agree with our thoughts?

Best regards,

Stefan and the JabRef team

  test("Unknown commands") {
    LaTeX2Unicode.convert("\\this \\is \\alpha test") shouldBe "\\this \\is α test"
    LaTeX2Unicode.convert("\\unknown command") shouldBe "\\unknown command"
    LaTeX2Unicode.convert("\\unknown{} empty params") shouldBe "\\unknown{} empty params"
    LaTeX2Unicode.convert("\\unknown{cmd}") shouldBe "\\unknown{cmd}"
  }