你能解釋一下，發生了什麼事嗎？
我正在使用最新的 MiKTeX 2.9.6960 64 位元版本（昨天剛安裝）。
我試圖在不使用 inputenc 套件的情況下將一些西里爾文文字寫入單獨的文件：
\documentclass{article}
\begin{document}
\newwrite\testwrite
\immediate\openout\testwrite=testwrite.txt
\immediate\write\testwrite{Ббббббббббббб}
\immediate\closeout\testwrite
\end{document}
但 LaTeX 並沒有告訴我編碼有問題，而是告訴我它的一些內部命令未定義。這是相應日誌檔案的一部分：
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.9 \immediate\write\testwrite{Ббббббббббббб}
?
! Undefined control sequence.
\GenericError ...
\let \@err@ ...
l.9 \immediate\write\testwrite{Ббббббббббббб}
?
! Undefined control sequence.
\GenericError ...
\@empty \def \MessageBreak...
l.9 \immediate\write\testwrite{Ббббббббббббб}
?
! Undefined control sequence.
\GenericError ...
\endgroup
l.9 \immediate\write\testwrite{Ббббббббббббб}
?
! Undefined control sequence.
\GenericError ...
#4 \errhelp \@err@ ...
l.9 \immediate\write\testwrite{Ббббббббббббб}
?
! Undefined control sequence.
\GenericError ...
\let \@err@ ...
l.9 \immediate\write\testwrite{Ббббббббббббб}
?
! Undefined control sequence.
\GenericError ...
\@empty \def \MessageBreak...
l.9 \immediate\write\testwrite{Ббббббббббббб}
等等。
這是一個錯誤還是發生了什麼事？
感謝您的回答。
答案1
活動字元設定為擴展為排版指令（或表示未設定字元的錯誤訊息），您只想逐字寫入文本，如下所示：
\documentclass{article}
\begin{document}
\newwrite\testwrite
\immediate\openout\testwrite=testwrite.txt
\immediate\write\testwrite{\detokenize{Ббббббббббббб}}
\immediate\closeout\testwrite
\end{document}
答案2
如果您不想使用 inputenc，請添加\UseRawInputEncoding
\UseRawInputEncoding
\documentclass{article}
\begin{document}
\newwrite\testwrite
\immediate\openout\testwrite=testwrite.txt
\immediate\write\testwrite{Ббббббббббббб}
\immediate\closeout\testwrite
\end{document}