带有 % 的超链接在 marginote 中不起作用？

Question

在准备一些数学问题的答案时，我将答案链接到一些 Wolfram Alpha 链接进行检查。当我将一些 Wolfram Alpha 链接放在 中\href，反过来又放在 中时，会出现错误\marginnote。我猜原因是%链接中的一些字符。

有人能帮助我解决这些问题吗？

\documentclass{article}
\usepackage{hyperref}
\usepackage{lipsum}
\usepackage{marginnote}
\begin{document}
\lipsum[1]
\hfill \href{https://www.wolframalpha.com/input/?i=%5B%5B4%2C6%2C6%5D%2C%5B1%2C3%2C2%5D%2C%5B-1%2C-5%2C-2%5D%5D}{Check Wolfram Alpha} % not sure working properly, but seems OK!
    
\lipsum[2]
\marginnote{\href{www.ams.org}{www.ams.org}} % OK!

\lipsum[3]
\marginnote{\href{https://www.wolframalpha.com/input/?i=%5B%5B4%2C6%2C6%5D%2C%5B1%2C3%2C2%5D%2C%5B-1%2C-5%2C-2%5D%5D}{Check Wolfram Alpha}} %<<< error. Comment this line to get a MWE.

\end{document}

Answer 1

%如果您在另一个命令的参数中使用href，则它无法更改 catcode 。但您可以先将 url 存储在宏中：

\documentclass{article}
\usepackage{hyperref}
\usepackage{lipsum}
\usepackage{marginnote}

\makeatletter
\newcommand\saveurl[1]{\begingroup\catcode`\%=12 \catcode`\#=12  \@saveurl#1}
\newcommand\@saveurl[2]{\endgroup\newcommand#1{#2}}
\makeatother

\saveurl\myurl{https://www.wolframalpha.com/input/?i=%5B%5B4%2C6%2C6%5D%2C%5B1%2C3%2C2%5D%2C%5B-1%2C-5%2C-2%5D%5D}

\begin{document}
\lipsum[1]

\hfill \href{\myurl}{Check Wolfram Alpha} % 

\lipsum[2]
\marginnote{\href{www.ams.org}{www.ams.org}} % OK!

\lipsum[3]
\marginnote{\href{\myurl}{Check Wolfram Alpha}} %

\end{document}

Answer 2

您可以定义一个\marginhref命令：

\documentclass{article}

\usepackage{marginnote}
\usepackage{hyperref}

\makeatletter % we want to use private commands
\newcommand{\marginhref}{%
  \begingroup
  \@makeother\%\@makeother\#%
  \@makemarginhref
}
\def\@makemarginhref#1#2{%
  \marginnote{\href{#1}{#2}}%
  \endgroup
}
\makeatother

\begin{document}
This has a link
\href{https://www.wolframalpha.com/input/?i=%5B%5B4%2C6%2C6%5D%2C%5B1%2C3%2C2%5D%2C%5B-1%2C-5%2C-2%5D%5D}{Check Wolfram Alpha} % not sure working properly, but seems OK!
    
This has a link in the margin\marginnote{\href{www.ams.org}{www.ams.org}} % OK!

Also this has a link in the margin
\marginhref{https://www.wolframalpha.com/input/?i=%5B%5B4%2C6%2C6%5D%2C%5B1%2C3%2C2%5D%2C%5B-1%2C-5%2C-2%5D%5D}{Check Wolfram Alpha}

\end{document}