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棋盘的边缘情况有什么问题吗？

tag-icon • tag-icon tikz-pgf fonts chessboard
棋盘的边缘情况有什么问题吗？

其中有三种功能的组合正在chessboard做一些意想不到的事情（在 nullfont 中排版一些字符）：curvemove、标记不在单个文件中的移动以及非整数 boardfontsize。有没有办法避免丢失这些字符？

\documentclass{article}

% Running this code generates nullfont characters.  From the log:
%    Missing character: There is no . ("2E) in font nullfont!
%    Missing character: There is no 7 ("37) in font nullfont!
%    Missing character: There is no 5 ("35) in font nullfont!

\usepackage{chessboard}
\begin{document}
  \chessboard[
    pgfstyle=curvemove,   % with pgfstyle=straightmove, the problem goes away.
    boardfontsize=9.75pt, % with boardfontsize=10pt, the problem goes away.
    markmoves={a2-b3}     % with markmoves={a2-a4} or {a2-a3}, the problem goes away.
    % Note:  with markmoves={a2-b2,a2-c2,a2-d2,a2-f2}, a version of the issue persists
    %        (typesetting ".25" or ".5" or ".75" in nullfont), though markmoves={a2-e2}
    %        seems totally fine (possibly because of divisibility by four).
  ]
\end{document}

答案1

您可以尝试以下补丁。下一个棋盘版本将包含它。

\documentclass{article}

% Running this code generates nullfont characters.  From the log:
%    Missing character: There is no . ("2E) in font nullfont!
%    Missing character: There is no 7 ("37) in font nullfont!
%    Missing character: There is no 5 ("35) in font nullfont!

\usepackage{chessboard,etoolbox}
\ExplSyntaxOn
\makeatletter
\newcommand\board@divide@NN[2]{%
 \dim_set:Nn#1 {#1*\dim_ratio:nn{1pt}{#2}}}%
\ExplSyntaxOff

\patchcmd\board@pgf@extractangle
  {\divide \len@board@tempy by \strip@pt\len@board@tempx\relax}
  {\board@divide@NN\len@board@tempy\len@board@tempx}{}{\fail}
\makeatother

\begin{document}

  \chessboard[
    pgfstyle=curvemove,   % with pgfstyle=straightmove, the problem goes away.
    boardfontsize=9.75pt, % with boardfontsize=10pt, the problem goes away.
    markmoves={a2-b3}     % with markmoves={a2-a4} or {a2-a3}, the problem goes away.
    % Note:  with markmoves={a2-b2,a2-c2,a2-d2,a2-f2}, a version of the issue persists
    %        (typesetting ".25" or ".5" or ".75" in nullfont), though markmoves={a2-e2}
    %        seems totally fine (possibly because of divisibility by four).
  ]
\end{document}

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