枚举列表的更简单符号

Question 1

这是一个基于 LuaLaTeX 的解决方案。它的三个主要工作假设是：(A) 有两个级别的枚举列表，(B) 字符串\i和\ii出现在行首，但可能以空格开头，(C) 任何带有\par指令的行都是不是前面都是空行。第三个假设不在（至少没有明确地）原始作者的工作假设列表中；但是，如果没有这个假设，本来就很复杂的代码会变得更加复杂。

大部分工作由名为的 Lua 函数执行FancyEnum。两个实用的 LaTeX 宏（称为\FancyEnumOn和\FancyEnumOff）用于激活和停用 Lua 函数对输入流的操作。当然，您应该提前阅读\FancyEnumOff包含字符串\i和的逐字材料\ii。

更新在收到来自 OP 的有关指令用途的更多信息后\setcounter{enumii}{0}。（其目的是确保“新的”2 级列表（其中“新的”表示至少有一个中间的 1 级指令）从 0 开始。）通过运行而不是每当新的 2 级列表开始时\item运行，可以更轻松地实现此目的。我已经相应地更新了 Lua 代码。\begin{enumerate}[series=level2]\begin{enumerate}[resume=level2]

下面的截图展示了Lua函数对原始博文建议的示例（稍作修改的形式）在左侧执行操作的结果，以及对右侧执行相应的硬编码枚举列表执行操作的结果。

% !TEX TS-program = lualatex
\documentclass{article}
\usepackage{enumitem}
\usepackage{multicol} % to create two-column output

\usepackage{luacode} % for 'luacode*' environment
\begin{luacode*}

-- Begin by defining 2 Boolean variables. They will be set to 'true' if
-- LaTeX is in a level-1 or level-2 enumerated environment, respectively.
local in_enumi =false
local in_enumii=false

-- The Lua function 'FancyEnum' does most of the work.
function FancyEnum ( s )  
  -- Input line starts with '\i' (possibly preceded by whitespace):
  if s:find ( "^%s-\\i " ) then
    if in_enumii==true then -- need to fall back one list level
      s = s:gsub ( "^%s-\\i " , "\\end{enumerate}\\item " )
      in_enumii=false
    elseif in_enumi==true then -- continue at level 1
      s = s:gsub ( "^%s-\\i " , "\\item " )
    else -- neither in_enumi nor in_enumii are true -- start a level-1 list
      s = s:gsub ( "^%s-\\i " , "\\begin{enumerate}[resume=level1] \\item " )
      in_enumi=true
    end
  -- Input line starts with '\ii' (possibly preceded by whitespace):
  elseif s:find ( "^%s-\\ii " ) then
    if in_enumii==true then -- continue at level 2
      s = s:gsub ( "^%s-\\ii " , "\\item " )
    elseif in_enumi==true then -- Moving from level 1 to level 2. Hence,
                -- we use '[series=level2]' rather than '[resume=level2]'
      in_enumii=true
      s = s:gsub ( "^%s-\\ii " , "\\begin{enumerate}[series=level2]\\item " )
    else -- jumping straight to level-2 list
      in_enumi=true
      in_enumii=true
      s = s:gsub ( "^%s-\\ii " , "\\begin{enumerate}[resume=level1]\\item[]" ..
                                 "\\begin{enumerate}[resume=level2]\\item " )
    end
  -- Input line is all-blank. Terminate 'enumerate' if 'in_enumi' and/or
  -- 'in_enumii' are 'true'.
  elseif s=="" then 
    if in_enumii==true then    -- terminate two 'enumerate' levels
      s = "\\end{enumerate}\\end{enumerate}" 
      in_enumii=false
      in_enumi=false
    elseif in_enumi==true then -- terminate one 'enumerate' level
      s = "\\end{enumerate}"
      in_enumi=false
    end 
  end

  -- Place 's' back on the input stream, for further processing by LaTeX.
  return s 
end -- end of Lua function

\end{luacode*}

%% Two LaTeX utility macros that activate and deactivate 'FancyEnum':
\newcommand\FancyEnumOn{\directlua{luatexbase.add_to_callback(
   "process_input_buffer", FancyEnum, "FancyEnum")}}
\newcommand\FancyEnumOff{\directlua{luatexbase.remove_from_callback(
   "process_input_buffer", "FancyEnum")}}

\begin{document}
\begin{multicols}{2}

    \FancyEnumOn % activate the Lua function 'FancyEnum'
    \verb+\FancyEnum+ on

    \i first item
    \i second item

    more text

    \i third item
    \par third item continues % note: no blank line before this line

    \i fourth item

    \ii fifth item

    \ii sixth item
    \par sixth item continues  % note: no blank line before this line

    \i  seventh item
    \ii eighth item  % note: no blank line before this line

    more text

    \ii ninth item

    \i tenth item

    \FancyEnumOff % deactivate 'FancyEnum'
    \columnbreak % optional

    \verb+\FancyEnum+ off (explicit lists)
    \begin{enumerate}[series=level1] % not [resume=level1]
    \item first item
    \item second item
    \end{enumerate}
    more text
    \begin{enumerate}[resume=level1]
    \item third item

          third item continues
    \item fourth item

    \begin{enumerate}[series=level2]
    \item fifth item

    \item sixth item

          sixth item continues
    \end{enumerate}
    \item seventh item
    \begin{enumerate}[series=level2]
    \item eighth item
    \end{enumerate}
    \end{enumerate}
    more text
    \begin{enumerate}[resume=level1]
    \item[]
    \begin{enumerate}[resume=level2]
    \item ninth item
    \end{enumerate}
    \item tenth item
    \end{enumerate}

\end{multicols}
\end{document}

Answer

这是一个基于 LuaLaTeX 的解决方案。它的三个主要工作假设是：(A) 有两个级别的枚举列表，(B) 字符串\i和\ii出现在行首，但可能以空格开头，(C) 任何带有\par指令的行都是不是前面都是空行。第三个假设不在（至少没有明确地）原始作者的工作假设列表中；但是，如果没有这个假设，本来就很复杂的代码会变得更加复杂。

大部分工作由名为的 Lua 函数执行FancyEnum。两个实用的 LaTeX 宏（称为\FancyEnumOn和\FancyEnumOff）用于激活和停用 Lua 函数对输入流的操作。当然，您应该提前阅读\FancyEnumOff包含字符串\i和的逐字材料\ii。

更新在收到来自 OP 的有关指令用途的更多信息后\setcounter{enumii}{0}。（其目的是确保“新的”2 级列表（其中“新的”表示至少有一个中间的 1 级指令）从 0 开始。）通过运行而不是每当新的 2 级列表开始时\item运行，可以更轻松地实现此目的。我已经相应地更新了 Lua 代码。\begin{enumerate}[series=level2]\begin{enumerate}[resume=level2]

下面的截图展示了Lua函数对原始博文建议的示例（稍作修改的形式）在左侧执行操作的结果，以及对右侧执行相应的硬编码枚举列表执行操作的结果。

% !TEX TS-program = lualatex
\documentclass{article}
\usepackage{enumitem}
\usepackage{multicol} % to create two-column output

\usepackage{luacode} % for 'luacode*' environment
\begin{luacode*}

-- Begin by defining 2 Boolean variables. They will be set to 'true' if
-- LaTeX is in a level-1 or level-2 enumerated environment, respectively.
local in_enumi =false
local in_enumii=false

-- The Lua function 'FancyEnum' does most of the work.
function FancyEnum ( s )  
  -- Input line starts with '\i' (possibly preceded by whitespace):
  if s:find ( "^%s-\\i " ) then
    if in_enumii==true then -- need to fall back one list level
      s = s:gsub ( "^%s-\\i " , "\\end{enumerate}\\item " )
      in_enumii=false
    elseif in_enumi==true then -- continue at level 1
      s = s:gsub ( "^%s-\\i " , "\\item " )
    else -- neither in_enumi nor in_enumii are true -- start a level-1 list
      s = s:gsub ( "^%s-\\i " , "\\begin{enumerate}[resume=level1] \\item " )
      in_enumi=true
    end
  -- Input line starts with '\ii' (possibly preceded by whitespace):
  elseif s:find ( "^%s-\\ii " ) then
    if in_enumii==true then -- continue at level 2
      s = s:gsub ( "^%s-\\ii " , "\\item " )
    elseif in_enumi==true then -- Moving from level 1 to level 2. Hence,
                -- we use '[series=level2]' rather than '[resume=level2]'
      in_enumii=true
      s = s:gsub ( "^%s-\\ii " , "\\begin{enumerate}[series=level2]\\item " )
    else -- jumping straight to level-2 list
      in_enumi=true
      in_enumii=true
      s = s:gsub ( "^%s-\\ii " , "\\begin{enumerate}[resume=level1]\\item[]" ..
                                 "\\begin{enumerate}[resume=level2]\\item " )
    end
  -- Input line is all-blank. Terminate 'enumerate' if 'in_enumi' and/or
  -- 'in_enumii' are 'true'.
  elseif s=="" then 
    if in_enumii==true then    -- terminate two 'enumerate' levels
      s = "\\end{enumerate}\\end{enumerate}" 
      in_enumii=false
      in_enumi=false
    elseif in_enumi==true then -- terminate one 'enumerate' level
      s = "\\end{enumerate}"
      in_enumi=false
    end 
  end

  -- Place 's' back on the input stream, for further processing by LaTeX.
  return s 
end -- end of Lua function

\end{luacode*}

%% Two LaTeX utility macros that activate and deactivate 'FancyEnum':
\newcommand\FancyEnumOn{\directlua{luatexbase.add_to_callback(
   "process_input_buffer", FancyEnum, "FancyEnum")}}
\newcommand\FancyEnumOff{\directlua{luatexbase.remove_from_callback(
   "process_input_buffer", "FancyEnum")}}

\begin{document}
\begin{multicols}{2}

    \FancyEnumOn % activate the Lua function 'FancyEnum'
    \verb+\FancyEnum+ on

    \i first item
    \i second item

    more text

    \i third item
    \par third item continues % note: no blank line before this line

    \i fourth item

    \ii fifth item

    \ii sixth item
    \par sixth item continues  % note: no blank line before this line

    \i  seventh item
    \ii eighth item  % note: no blank line before this line

    more text

    \ii ninth item

    \i tenth item

    \FancyEnumOff % deactivate 'FancyEnum'
    \columnbreak % optional

    \verb+\FancyEnum+ off (explicit lists)
    \begin{enumerate}[series=level1] % not [resume=level1]
    \item first item
    \item second item
    \end{enumerate}
    more text
    \begin{enumerate}[resume=level1]
    \item third item

          third item continues
    \item fourth item

    \begin{enumerate}[series=level2]
    \item fifth item

    \item sixth item

          sixth item continues
    \end{enumerate}
    \item seventh item
    \begin{enumerate}[series=level2]
    \item eighth item
    \end{enumerate}
    \end{enumerate}
    more text
    \begin{enumerate}[resume=level1]
    \item[]
    \begin{enumerate}[resume=level2]
    \item ninth item
    \end{enumerate}
    \item tenth item
    \end{enumerate}

\end{multicols}
\end{document}

Question 2

我认为你想使用易清单包。它并没有完全满足您的所有需求，但已经非常接近了。例如，代码：

\documentclass{article}
\usepackage[sharp]{easylist}% sharp => # is used for \item
\begin{document}

Some text here
\begin{easylist}[articletoc]
    # first item
    # second item

    more text

    # third item
    \par third item continues

    # fourth item

    ## fifth item

    ## sixth item
    ## seventh item

    more text

    ## eighth item
    # ninth item
\end{easylist}

\end{document}

生产

可以使用控制许多额外选项\ListProperties，例如Hang=<n>设置悬挂缩进。手册非常易读。

编辑以下内容可能非常接近您想要的。您可以使用以下命令禁用第一级列表的计数器

\ListProperties(
    Hang=true,
    Hide1=1,
    Hide2=1,
    Hide3=1,
    Hide4=1,
    Progressive*=2em,
    Style1*=\theblank,
    Indent1=0em,
)

因此，以下代码

\begin{easylist}
# Some text here
## first item
## second item

# more text

## third item
\par third item continues

## fourth item

### fifth item

### sixth item
### seventh item

# more text

### eighth item
## ninth item
\end{easylist}

生产

因此，每一行至少有一个#，对应不在列表中，而带有的行##位于第一个列表（第 1 级）内，带有的行###位于第 2 级，依此类推。

完整代码如下：

\documentclass{article}
\usepackage[sharp]{easylist}% sharp => # is used for \item
\begin{document}

\ListProperties(
    Hang=true,
    Hide1=1, % hide counter 1 on level 1
    Hide2=1, % hide counter 1 on level 2
    Hide3=1, % hide counter 1 on level 3
    Hide4=1, % hide counter 1 on level 4
    Progressive*=2em,
    Style1*=\theblank,
    Indent1=0em,
)

\begin{easylist}
# Some text here
## first item
## second item

# more text

## third item
\par third item continues

## fourth item

### fifth item

### sixth item
### seventh item

# more text

### eighth item
## ninth item
\end{easylist}

\end{document}

Answer