LaTeX. Пакет pdfx

Пакет для создание документов pdf, соответствующих стандартам PDF/A и PDF/X.

1 Проблемы

1.1 2021-07 Совместимость с LaTeX2e, версия от 2021-06-01

• После закрытия ошибки 605 (см. https://github.com/latex3/latex2e/issues/605) пакет pdfx перестал работать.
• В качестве временного решения предложено при компиляции откатиться на состояние до закрытия ошибки 605.
• Предложенный код (см. https://tex.stackexchange.com/questions/605854/error-using-pdfx-on-tex-live-2021):

   1\ProvidesPackage{fixpdfx}[2021-07-22 A package that fixes pdfx errors on TeX Live 2021 in a quick and dirty way]
   2
   3% temporarily reverts https://github.com/latex3/latex2e/commit/5fb2860f2fedc87b213730f06ec1d77bcab4814a
   4% resp. https://github.com/latex3/latex2e/commit/dd2ec509ec98e9c359a41e35aea6aade86485ca2
   5% as it breaks pdfx (see https://tex.stackexchange.com/questions/605854/error-using-pdfx-on-tex-live-2021)
   6
   7\@ifpackageloaded{pdfx}{
   8    \PackageError{fixpdfx}{pdfx is loaded}{This package must be loaded before pdfx}
   9}{}
  10
  11\ExplSyntaxOn
  12
  13% this is the old implementation from base/ltpara.dtx, version 1.0g
  14\cs_new_protected:Npn \__old_para_end: {
  15  % ltpara v1.0h as well as firstaid/latex2e-first-aid-for-external-files.dtx v1.0o inserted
  16  % \scan_stop: here, which breaks pdfx
  17  \mode_if_horizontal:TF {
  18    \mode_if_inner:F {
  19         \tex_unskip:D
  20         \hook_use:n{para/end}
  21         \@kernel@after@para@end
  22         \mode_if_horizontal:TF {
  23           \if_int_compare:w 0 < \tex_lastnodetype:D
  24             \tex_kern:D \c_zero_dim
  25           \fi:
  26           \tex_par:D
  27           \hook_use:n{para/after}
  28           \@kernel@after@para@after
  29         }
  30         { \msg_error:nnnn { hooks }{ para-mode }{end}{horizontal} }
  31    }
  32  }
  33  \tex_par:D
  34}
  35
  36\PackageWarning{fixpdfx}{Patching~\para_end:~implementation~to~fix~pdfx}
  37\cs_set_eq:NN \par     \__old_para_end:
  38% these two aren't actually required to fix pdfx, so we'll skip them...
  39%\cs_set_eq:NN \@@par   \__old_para_end:
  40%\cs_set_eq:NN \endgraf \__old_para_end:
  41
  42\AtBeginDocument{
  43    \@ifpackageloaded{pdfx}{}{
  44        \PackageError{fixpdfx}{pdfx~is~not~loaded}{You~did~not~load~pdfx~and~thus~do~not~need~this~package}
  45    }
  46    % pdfx v1.6.3 from 2019-02-27 is bad, so anything later is hopefully fixed...
  47    \@ifpackagelater{pdfx}{2019/02/28}{
  48        \PackageError{fixpdfx}{Please~check~whether~you~really~need~this~package.}{Your~pdfx~package~is~more~recent~than~2019-02-27~and~thus~might~not~require~this~package's~fix.}
  49    }{}
  50
  51    \PackageWarning{fixpdf}{Restoring~old~\para_end:~implementation}
  52
  53    % restore additional definitions
  54    \cs_set_eq:NN \par     \para_end:
  55    % see above: as we didn't replace them, no need to restore them.
  56    %\cs_set_eq:NN \@@par   \para_end:
  57    %\cs_set_eq:NN \endgraf \para_end:
  58}
  59
  60\ExplSyntaxOff