The BXghost Package

LaTeX: ghost insertion for proper xkanjiskip

Requirements

• TeX format: LaTeX
• TeX engine: LuaTeX, XeTeX, pTeX, upTeX, and ApTeX (pTeX-ng)
• LuaTeX-ja is required in LuaTeX

Since this package is intended to be used for creating documents in Japanese, it assumes appropriate classes and/or packages are loaded in some engines (e.g., LuaTeX-ja for LuaTeX and bxjscls for XeTeX).

Usage

This package provides following commands:

• \eghostguarded{<text>} inserts European ghost (invisible and zero-width alphabets) before and after the <text>. In math mode, it outputs only <text> without the ghosts.
• \jghostguarded{<text>} inserts Japanese ghost (invisible and zero-width Japanese characters) before and after the <text>. In math mode, it outputs only <text> without the ghosts.

In addition, the following package options are available:

• verb patches the \verb command of LaTeX to be guarded by European ghost.
• noverb disables the verb feature. (default)

For package authors

To use the function of this package in your package, a library version is available:

\RequirePackage{bxghost-lib}

This provides all the commands defined in the package but does not have any package option to prevent the problem of option clashes.

Acknowledgements

The logic and style of the code in this package is greatly inspired by Package PXghost and various packages in the BX series. I would like to thank the author of the packages, Dr. Takayuki Yato (aka. ZR).

License

This package is distributed under the MIT license.

Revision History

• Version 0.5.1 ‹2023/02/26›
  • Add support for e-upTeX based pLaTeX
• Version 0.5.0 ‹2022/05/20›
  • Provide bxghost-lib for internal use from other packages
• Version 0.4.0 ‹2022/02/12›
  • More general implementation for \jghostguarded
  • Add the noverb option
• Version 0.3.0 ‹2020/01/31›
  • Add the verb option
• Version 0.2.0 ‹2019/09/17›
  • Add supports for XeTeX and ApTeX (pTeX-ng)
• Version 0.1.0 ‹2019/09/16›
  • The first public version
  • Add supports for LuaTeX to the original PXghost package

Takuto Asakura (wtsnjp)