在 Latex 中生成 catcode 表（使用 \typeout 到终端）？

Question 1

好吧，这是一个部分答案 - 做所有事情，（~~除了我不知道如何在 Latex 中将 ASCII 代码作为字符输出到终端（\char显然是排版的，而且不可扩展，所以不能用于\typeout）~~ _{编辑：感谢uccode评论中@DavidCarlisle 的技巧，已修复。}），除了“反向查找”。

（EDIT2：另请texref参阅@codebeard 的评论）

输出如下：

...
ASCII [29]: ==^^]== CATCODE {15}: ignored
ASCII [30]: ==^^^== CATCODE {15}: ignored
ASCII [31]: ==^^_== CATCODE {15}: ignored
ASCII [32]: == == CATCODE {10}: space
ASCII [33]: ==!== CATCODE {12}: otherchar
ASCII [34]: =="== CATCODE {12}: otherchar
ASCII [35]: ==#== CATCODE {6}: parameter
ASCII [36]: ==$== CATCODE {3}: math shift
ASCII [37]: ==%== CATCODE {14}: comment
ASCII [38]: ==&== CATCODE {4}: tab
ASCII [39]: =='== CATCODE {12}: otherchar
ASCII [40]: ==(== CATCODE {12}: otherchar
ASCII [41]: ==)== CATCODE {12}: otherchar
....

..代码如下：

\documentclass[12pt]{article}

% http://mathematics.nsetzer.com/latex/latex_for_loop.html
\usepackage{ifthen}
\newcommand{\forloop}[5][1]%
{%
\setcounter{#2}{#3}%
\ifthenelse{#4}%
    {%
    #5%
    \addtocounter{#2}{#1}%
    \forloop[#1]{#2}{\value{#2}}{#4}{#5}%
    }%
% Else
    {%
    }%
}%

\newcommand{\printcatcode}[1]{%
   \ifcase\catcode`#1\relax
      escape\or
      beginning of group\or
      end of group\or
      math shift\or
      tab\or
      end of line\or
      parameter\or
      superscript\or
      subscript\or
      ignored\or
      space\or
      letter\or
      otherchar\or
      active\or
      comment\or
      ignored\fi}

\newcommand{\printcatcodeI}[1]{%
   \ifcase\catcode#1\relax
      escape\or
      beginning of group\or
      end of group\or
      math shift\or
      tab\or
      end of line\or
      parameter\or
      superscript\or
      subscript\or
      ignored\or
      space\or
      letter\or
      otherchar\or
      active\or
      comment\or
      ignored\fi}

\newcounter{ct}

% NOTE: \char *typesets*
% \typeout{\char\thect} doesn't work;
% \char typesets - and doesn't expand!
% to print character from code, use uccode trick
%  (with A as standin, only local changes):
%
\def\printCatcodeTableStdout{%
  \forloop[1]{ct}{0}{\value{ct} < 256}{%
   {% code_block (changes only in local scope)
    \uccode`A=\value{ct} %
    \uppercase{ %
      \typeout{ascii [\thect]: ==A==  catcode {\the\catcode\thect}: \printcatcodeI\thect }
    } % end uppercase
   } % end code_block
  } % end forloop
  %\typeout{=A=} % check if back to normal? yes
}

\begin{document}

\printCatcodeTableStdout

\end{document}

Answer

好吧，这是一个部分答案 - 做所有事情，（~~除了我不知道如何在 Latex 中将 ASCII 代码作为字符输出到终端（\char显然是排版的，而且不可扩展，所以不能用于\typeout）~~ _{编辑：感谢uccode评论中@DavidCarlisle 的技巧，已修复。}），除了“反向查找”。

（EDIT2：另请texref参阅@codebeard 的评论）

输出如下：

...
ASCII [29]: ==^^]== CATCODE {15}: ignored
ASCII [30]: ==^^^== CATCODE {15}: ignored
ASCII [31]: ==^^_== CATCODE {15}: ignored
ASCII [32]: == == CATCODE {10}: space
ASCII [33]: ==!== CATCODE {12}: otherchar
ASCII [34]: =="== CATCODE {12}: otherchar
ASCII [35]: ==#== CATCODE {6}: parameter
ASCII [36]: ==$== CATCODE {3}: math shift
ASCII [37]: ==%== CATCODE {14}: comment
ASCII [38]: ==&== CATCODE {4}: tab
ASCII [39]: =='== CATCODE {12}: otherchar
ASCII [40]: ==(== CATCODE {12}: otherchar
ASCII [41]: ==)== CATCODE {12}: otherchar
....

..代码如下：

\documentclass[12pt]{article}

% http://mathematics.nsetzer.com/latex/latex_for_loop.html
\usepackage{ifthen}
\newcommand{\forloop}[5][1]%
{%
\setcounter{#2}{#3}%
\ifthenelse{#4}%
    {%
    #5%
    \addtocounter{#2}{#1}%
    \forloop[#1]{#2}{\value{#2}}{#4}{#5}%
    }%
% Else
    {%
    }%
}%

\newcommand{\printcatcode}[1]{%
   \ifcase\catcode`#1\relax
      escape\or
      beginning of group\or
      end of group\or
      math shift\or
      tab\or
      end of line\or
      parameter\or
      superscript\or
      subscript\or
      ignored\or
      space\or
      letter\or
      otherchar\or
      active\or
      comment\or
      ignored\fi}

\newcommand{\printcatcodeI}[1]{%
   \ifcase\catcode#1\relax
      escape\or
      beginning of group\or
      end of group\or
      math shift\or
      tab\or
      end of line\or
      parameter\or
      superscript\or
      subscript\or
      ignored\or
      space\or
      letter\or
      otherchar\or
      active\or
      comment\or
      ignored\fi}

\newcounter{ct}

% NOTE: \char *typesets*
% \typeout{\char\thect} doesn't work;
% \char typesets - and doesn't expand!
% to print character from code, use uccode trick
%  (with A as standin, only local changes):
%
\def\printCatcodeTableStdout{%
  \forloop[1]{ct}{0}{\value{ct} < 256}{%
   {% code_block (changes only in local scope)
    \uccode`A=\value{ct} %
    \uppercase{ %
      \typeout{ascii [\thect]: ==A==  catcode {\the\catcode\thect}: \printcatcodeI\thect }
    } % end uppercase
   } % end code_block
  } % end forloop
  %\typeout{=A=} % check if back to normal? yes
}

\begin{document}

\printCatcodeTableStdout

\end{document}

Question 2

expl3宏的实现，\catcodetable将一系列值（默认0-255）或单个数字（表示从 0 开始的间隔的结束）作为可选参数。

启动一个循环，在每个阶段检查相应的代码点；我们打印代码点（十进制格式）；然后表示字符

如果在0~31之间，按照传统的方法^^，加64；
为 127，其中^^?；
对于 128 到 255 之间的字符，用两个小写的十六进制数字表示^^ab。

接下来是口头表达的类别代码。

    %\UseRawInputEncoding
    \documentclass{article}
    \usepackage{xparse}
    \usepackage{ifxetex}

    \ExplSyntaxOn
    \NewDocumentCommand{\catcodetable}{>{\SplitArgument{1}{-}}O{0-255}}
     {
      \catcodetablerange#1
     }
    \NewDocumentCommand{\catcodetablerange}{mm}
     {
      \IfNoValueTF{#2}
       {
        \egreg_cctab:nn { 0 } { #1 }
       }
       {
        \egreg_cctab:nn { #1 } { #2 }
       }
     }

    \str_const:Nn \c_egreg_cctab_prefix_str { ^ ^ }

    \cs_new_protected:Nn \egreg_cctab:nn
     {
      \int_step_function:nnnN { #1 } { 1 } { #2 } \egreg_cctab_char:n
     }

    \cs_new_protected:Nn \egreg_cctab_char:n
     {
      \iow_term:x
       {
        Code~\int_to_arabic:n { #1 }:~(
        \int_compare:nTF { 0 <= #1 < 32 }
         {
          \c_egreg_cctab_prefix_str \char_generate:nn { #1+64 } { 12 }
         }
         {
          \int_compare:nTF { #1 = 127 }
           {
            \c_egreg_cctab_prefix_str \char_generate:nn { #1-64 } { 12 }
           }
           {
            \int_compare:nTF { 128 <= #1 < 256 }
             {
              \c_egreg_cctab_prefix_str \int_to_hex:n { #1 }
             }
             {
              \char_generate:nn { #1 } { 12 }
             }
           }
         }
         )~\__egreg_cctab_catcode:n { #1 }
       }
     }
    \cs_new:Nn \__egreg_cctab_catcode:n
     {
      \int_case:nn { \char_value_catcode:n { #1 } }
       {
        {0}{escape}
        {1}{begin~group}
        {2}{end~group}
        {3}{math~shift}
        {4}{alignment}
        {5}{end~of~line}
        {6}{parameter}
        {7}{superscript}
        {8}{subscript}
        {9}{ignored}
        {10}{space}
        {11}{letter}
        {12}{other~character}
        {13}{active~character}
        {14}{comment}
        {15}{ignored}
       }
     }
    \ExplSyntaxOff

    \catcodetable

    \ifxetex
    \catcodetable[256-512]
    \fi

    \stop

如果运行这个pdflatex我们得到

Code 0: (^^@) ignored
Code 1: (^^A) active character
Code 2: (^^B) active character
Code 3: (^^C) active character
Code 4: (^^D) active character
Code 5: (^^E) active character
Code 6: (^^F) active character
Code 7: (^^G) active character
Code 8: (^^H) active character
Code 9: (^^I) space
Code 10: (^^J) other character
Code 11: (^^K) active character
Code 12: (^^L) active character
Code 13: (^^M) end of line
Code 14: (^^N) active character
Code 15: (^^O) active character
Code 16: (^^P) active character
Code 17: (^^Q) active character
Code 18: (^^R) active character
Code 19: (^^S) active character
Code 20: (^^T) active character
Code 21: (^^U) active character
Code 22: (^^V) active character
Code 23: (^^W) active character
Code 24: (^^X) active character
Code 25: (^^Y) active character
Code 26: (^^Z) active character
Code 27: (^^[) active character
Code 28: (^^\) active character
Code 29: (^^]) active character
Code 30: (^^^) active character
Code 31: (^^_) active character
Code 32: ( ) space
Code 33: (!) other character
Code 34: (") other character
Code 35: (#) parameter
Code 36: ($) math shift
Code 37: (%) comment
Code 38: (&) alignment
Code 39: (') other character
Code 40: (() other character
Code 41: ()) other character
Code 42: (*) other character
Code 43: (+) other character
Code 44: (,) other character
Code 45: (-) other character
Code 46: (.) other character
Code 47: (/) other character
Code 48: (0) other character
Code 49: (1) other character
Code 50: (2) other character
Code 51: (3) other character
Code 52: (4) other character
Code 53: (5) other character
Code 54: (6) other character
Code 55: (7) other character
Code 56: (8) other character
Code 57: (9) other character
Code 58: (:) other character
Code 59: (;) other character
Code 60: (<) other character
Code 61: (=) other character
Code 62: (>) other character
Code 63: (?) other character
Code 64: (@) other character
Code 65: (A) letter
Code 66: (B) letter
Code 67: (C) letter
Code 68: (D) letter
Code 69: (E) letter
Code 70: (F) letter
Code 71: (G) letter
Code 72: (H) letter
Code 73: (I) letter
Code 74: (J) letter
Code 75: (K) letter
Code 76: (L) letter
Code 77: (M) letter
Code 78: (N) letter
Code 79: (O) letter
Code 80: (P) letter
Code 81: (Q) letter
Code 82: (R) letter
Code 83: (S) letter
Code 84: (T) letter
Code 85: (U) letter
Code 86: (V) letter
Code 87: (W) letter
Code 88: (X) letter
Code 89: (Y) letter
Code 90: (Z) letter
Code 91: ([) other character
Code 92: (\) escape
Code 93: (]) other character
Code 94: (^) superscript
Code 95: (_) subscript
Code 96: (`) other character
Code 97: (a) letter
Code 98: (b) letter
Code 99: (c) letter
Code 100: (d) letter
Code 101: (e) letter
Code 102: (f) letter
Code 103: (g) letter
Code 104: (h) letter
Code 105: (i) letter
Code 106: (j) letter
Code 107: (k) letter
Code 108: (l) letter
Code 109: (m) letter
Code 110: (n) letter
Code 111: (o) letter
Code 112: (p) letter
Code 113: (q) letter
Code 114: (r) letter
Code 115: (s) letter
Code 116: (t) letter
Code 117: (u) letter
Code 118: (v) letter
Code 119: (w) letter
Code 120: (x) letter
Code 121: (y) letter
Code 122: (z) letter
Code 123: ({) begin group
Code 124: (|) other character
Code 125: (}) end group
Code 126: (~) active character
Code 127: (^^?) ignored
Code 128: (^^80) active character
Code 129: (^^81) active character
Code 130: (^^82) active character
Code 131: (^^83) active character
Code 132: (^^84) active character
Code 133: (^^85) active character
Code 134: (^^86) active character
Code 135: (^^87) active character
Code 136: (^^88) active character
Code 137: (^^89) active character
Code 138: (^^8a) active character
Code 139: (^^8b) active character
Code 140: (^^8c) active character
Code 141: (^^8d) active character
Code 142: (^^8e) active character
Code 143: (^^8f) active character
Code 144: (^^90) active character
Code 145: (^^91) active character
Code 146: (^^92) active character
Code 147: (^^93) active character
Code 148: (^^94) active character
Code 149: (^^95) active character
Code 150: (^^96) active character
Code 151: (^^97) active character
Code 152: (^^98) active character
Code 153: (^^99) active character
Code 154: (^^9a) active character
Code 155: (^^9b) active character
Code 156: (^^9c) active character
Code 157: (^^9d) active character
Code 158: (^^9e) active character
Code 159: (^^9f) active character
Code 160: (^^a0) active character
Code 161: (^^a1) active character
Code 162: (^^a2) active character
Code 163: (^^a3) active character
Code 164: (^^a4) active character
Code 165: (^^a5) active character
Code 166: (^^a6) active character
Code 167: (^^a7) active character
Code 168: (^^a8) active character
Code 169: (^^a9) active character
Code 170: (^^aa) active character
Code 171: (^^ab) active character
Code 172: (^^ac) active character
Code 173: (^^ad) active character
Code 174: (^^ae) active character
Code 175: (^^af) active character
Code 176: (^^b0) active character
Code 177: (^^b1) active character
Code 178: (^^b2) active character
Code 179: (^^b3) active character
Code 180: (^^b4) active character
Code 181: (^^b5) active character
Code 182: (^^b6) active character
Code 183: (^^b7) active character
Code 184: (^^b8) active character
Code 185: (^^b9) active character
Code 186: (^^ba) active character
Code 187: (^^bb) active character
Code 188: (^^bc) active character
Code 189: (^^bd) active character
Code 190: (^^be) active character
Code 191: (^^bf) active character
Code 192: (^^c0) active character
Code 193: (^^c1) active character
Code 194: (^^c2) active character
Code 195: (^^c3) active character
Code 196: (^^c4) active character
Code 197: (^^c5) active character
Code 198: (^^c6) active character
Code 199: (^^c7) active character
Code 200: (^^c8) active character
Code 201: (^^c9) active character
Code 202: (^^ca) active character
Code 203: (^^cb) active character
Code 204: (^^cc) active character
Code 205: (^^cd) active character
Code 206: (^^ce) active character
Code 207: (^^cf) active character
Code 208: (^^d0) active character
Code 209: (^^d1) active character
Code 210: (^^d2) active character
Code 211: (^^d3) active character
Code 212: (^^d4) active character
Code 213: (^^d5) active character
Code 214: (^^d6) active character
Code 215: (^^d7) active character
Code 216: (^^d8) active character
Code 217: (^^d9) active character
Code 218: (^^da) active character
Code 219: (^^db) active character
Code 220: (^^dc) active character
Code 221: (^^dd) active character
Code 222: (^^de) active character
Code 223: (^^df) active character
Code 224: (^^e0) active character
Code 225: (^^e1) active character
Code 226: (^^e2) active character
Code 227: (^^e3) active character
Code 228: (^^e4) active character
Code 229: (^^e5) active character
Code 230: (^^e6) active character
Code 231: (^^e7) active character
Code 232: (^^e8) active character
Code 233: (^^e9) active character
Code 234: (^^ea) active character
Code 235: (^^eb) active character
Code 236: (^^ec) active character
Code 237: (^^ed) active character
Code 238: (^^ee) active character
Code 239: (^^ef) active character
Code 240: (^^f0) active character
Code 241: (^^f1) active character
Code 242: (^^f2) active character
Code 243: (^^f3) active character
Code 244: (^^f4) active character
Code 245: (^^f5) active character
Code 246: (^^f6) active character
Code 247: (^^f7) active character
Code 248: (^^f8) active character
Code 249: (^^f9) active character
Code 250: (^^fa) active character
Code 251: (^^fb) active character
Code 252: (^^fc) active character
Code 253: (^^fd) active character
Code 254: (^^fe) active character
Code 255: (^^ff) active character

取消注释\UseRawInputEncoding，我们将得到 2018-04-01 LaTeX 发布之前的情况，即

Code 0: (^^@) ignored
Code 1: (^^A) ignored
Code 2: (^^B) ignored
Code 3: (^^C) ignored
Code 4: (^^D) ignored
Code 5: (^^E) ignored
Code 6: (^^F) ignored
Code 7: (^^G) ignored
Code 8: (^^H) ignored
Code 9: (^^I) space
Code 10: (^^J) other character
Code 11: (^^K) ignored
Code 12: (^^L) active character
Code 13: (^^M) end of line
Code 14: (^^N) ignored
Code 15: (^^O) ignored
Code 16: (^^P) ignored
Code 17: (^^Q) ignored
Code 18: (^^R) ignored
Code 19: (^^S) ignored
Code 20: (^^T) ignored
Code 21: (^^U) ignored
Code 22: (^^V) ignored
Code 23: (^^W) ignored
Code 24: (^^X) ignored
Code 25: (^^Y) ignored
Code 26: (^^Z) ignored
Code 27: (^^[) ignored
Code 28: (^^\) ignored
Code 29: (^^]) ignored
Code 30: (^^^) ignored
Code 31: (^^_) ignored
Code 32: ( ) space
Code 33: (!) other character
Code 34: (") other character
Code 35: (#) parameter
Code 36: ($) math shift
Code 37: (%) comment
Code 38: (&) alignment
Code 39: (') other character
Code 40: (() other character
Code 41: ()) other character
Code 42: (*) other character
Code 43: (+) other character
Code 44: (,) other character
Code 45: (-) other character
Code 46: (.) other character
Code 47: (/) other character
Code 48: (0) other character
Code 49: (1) other character
Code 50: (2) other character
Code 51: (3) other character
Code 52: (4) other character
Code 53: (5) other character
Code 54: (6) other character
Code 55: (7) other character
Code 56: (8) other character
Code 57: (9) other character
Code 58: (:) other character
Code 59: (;) other character
Code 60: (<) other character
Code 61: (=) other character
Code 62: (>) other character
Code 63: (?) other character
Code 64: (@) other character
Code 65: (A) letter
Code 66: (B) letter
Code 67: (C) letter
Code 68: (D) letter
Code 69: (E) letter
Code 70: (F) letter
Code 71: (G) letter
Code 72: (H) letter
Code 73: (I) letter
Code 74: (J) letter
Code 75: (K) letter
Code 76: (L) letter
Code 77: (M) letter
Code 78: (N) letter
Code 79: (O) letter
Code 80: (P) letter
Code 81: (Q) letter
Code 82: (R) letter
Code 83: (S) letter
Code 84: (T) letter
Code 85: (U) letter
Code 86: (V) letter
Code 87: (W) letter
Code 88: (X) letter
Code 89: (Y) letter
Code 90: (Z) letter
Code 91: ([) other character
Code 92: (\) escape
Code 93: (]) other character
Code 94: (^) superscript
Code 95: (_) subscript
Code 96: (`) other character
Code 97: (a) letter
Code 98: (b) letter
Code 99: (c) letter
Code 100: (d) letter
Code 101: (e) letter
Code 102: (f) letter
Code 103: (g) letter
Code 104: (h) letter
Code 105: (i) letter
Code 106: (j) letter
Code 107: (k) letter
Code 108: (l) letter
Code 109: (m) letter
Code 110: (n) letter
Code 111: (o) letter
Code 112: (p) letter
Code 113: (q) letter
Code 114: (r) letter
Code 115: (s) letter
Code 116: (t) letter
Code 117: (u) letter
Code 118: (v) letter
Code 119: (w) letter
Code 120: (x) letter
Code 121: (y) letter
Code 122: (z) letter
Code 123: ({) begin group
Code 124: (|) other character
Code 125: (}) end group
Code 126: (~) active character
Code 127: (^^?) ignored
Code 128: (^^80) other character
Code 129: (^^81) other character
Code 130: (^^82) other character
Code 131: (^^83) other character
Code 132: (^^84) other character
Code 133: (^^85) other character
Code 134: (^^86) other character
Code 135: (^^87) other character
Code 136: (^^88) other character
Code 137: (^^89) other character
Code 138: (^^8a) other character
Code 139: (^^8b) other character
Code 140: (^^8c) other character
Code 141: (^^8d) other character
Code 142: (^^8e) other character
Code 143: (^^8f) other character
Code 144: (^^90) other character
Code 145: (^^91) other character
Code 146: (^^92) other character
Code 147: (^^93) other character
Code 148: (^^94) other character
Code 149: (^^95) other character
Code 150: (^^96) other character
Code 151: (^^97) other character
Code 152: (^^98) other character
Code 153: (^^99) other character
Code 154: (^^9a) other character
Code 155: (^^9b) other character
Code 156: (^^9c) other character
Code 157: (^^9d) other character
Code 158: (^^9e) other character
Code 159: (^^9f) other character
Code 160: (^^a0) other character
Code 161: (^^a1) other character
Code 162: (^^a2) other character
Code 163: (^^a3) other character
Code 164: (^^a4) other character
Code 165: (^^a5) other character
Code 166: (^^a6) other character
Code 167: (^^a7) other character
Code 168: (^^a8) other character
Code 169: (^^a9) other character
Code 170: (^^aa) other character
Code 171: (^^ab) other character
Code 172: (^^ac) other character
Code 173: (^^ad) other character
Code 174: (^^ae) other character
Code 175: (^^af) other character
Code 176: (^^b0) other character
Code 177: (^^b1) other character
Code 178: (^^b2) other character
Code 179: (^^b3) other character
Code 180: (^^b4) other character
Code 181: (^^b5) other character
Code 182: (^^b6) other character
Code 183: (^^b7) other character
Code 184: (^^b8) other character
Code 185: (^^b9) other character
Code 186: (^^ba) other character
Code 187: (^^bb) other character
Code 188: (^^bc) other character
Code 189: (^^bd) other character
Code 190: (^^be) other character
Code 191: (^^bf) other character
Code 192: (^^c0) other character
Code 193: (^^c1) other character
Code 194: (^^c2) other character
Code 195: (^^c3) other character
Code 196: (^^c4) other character
Code 197: (^^c5) other character
Code 198: (^^c6) other character
Code 199: (^^c7) other character
Code 200: (^^c8) other character
Code 201: (^^c9) other character
Code 202: (^^ca) other character
Code 203: (^^cb) other character
Code 204: (^^cc) other character
Code 205: (^^cd) other character
Code 206: (^^ce) other character
Code 207: (^^cf) other character
Code 208: (^^d0) other character
Code 209: (^^d1) other character
Code 210: (^^d2) other character
Code 211: (^^d3) other character
Code 212: (^^d4) other character
Code 213: (^^d5) other character
Code 214: (^^d6) other character
Code 215: (^^d7) other character
Code 216: (^^d8) other character
Code 217: (^^d9) other character
Code 218: (^^da) other character
Code 219: (^^db) other character
Code 220: (^^dc) other character
Code 221: (^^dd) other character
Code 222: (^^de) other character
Code 223: (^^df) other character
Code 224: (^^e0) other character
Code 225: (^^e1) other character
Code 226: (^^e2) other character
Code 227: (^^e3) other character
Code 228: (^^e4) other character
Code 229: (^^e5) other character
Code 230: (^^e6) other character
Code 231: (^^e7) other character
Code 232: (^^e8) other character
Code 233: (^^e9) other character
Code 234: (^^ea) other character
Code 235: (^^eb) other character
Code 236: (^^ec) other character
Code 237: (^^ed) other character
Code 238: (^^ee) other character
Code 239: (^^ef) other character
Code 240: (^^f0) other character
Code 241: (^^f1) other character
Code 242: (^^f2) other character
Code 243: (^^f3) other character
Code 244: (^^f4) other character
Code 245: (^^f5) other character
Code 246: (^^f6) other character
Code 247: (^^f7) other character
Code 248: (^^f8) other character
Code 249: (^^f9) other character
Code 250: (^^fa) other character
Code 251: (^^fb) other character
Code 252: (^^fc) other character
Code 253: (^^fd) other character
Code 254: (^^fe) other character
Code 255: (^^ff) other character

如果编译时xelatex（由于答案的长度限制，仅显示 256-512 范围内的输出）

Code 256: (Ā) letter
Code 257: (ā) letter
Code 258: (Ă) letter
Code 259: (ă) letter
Code 260: (Ą) letter
Code 261: (ą) letter
Code 262: (Ć) letter
Code 263: (ć) letter
Code 264: (Ĉ) letter
Code 265: (ĉ) letter
Code 266: (Ċ) letter
Code 267: (ċ) letter
Code 268: (Č) letter
Code 269: (č) letter
Code 270: (Ď) letter
Code 271: (ď) letter
Code 272: (Đ) letter
Code 273: (đ) letter
Code 274: (Ē) letter
Code 275: (ē) letter
Code 276: (Ĕ) letter
Code 277: (ĕ) letter
Code 278: (Ė) letter
Code 279: (ė) letter
Code 280: (Ę) letter
Code 281: (ę) letter
Code 282: (Ě) letter
Code 283: (ě) letter
Code 284: (Ĝ) letter
Code 285: (ĝ) letter
Code 286: (Ğ) letter
Code 287: (ğ) letter
Code 288: (Ġ) letter
Code 289: (ġ) letter
Code 290: (Ģ) letter
Code 291: (ģ) letter
Code 292: (Ĥ) letter
Code 293: (ĥ) letter
Code 294: (Ħ) letter
Code 295: (ħ) letter
Code 296: (Ĩ) letter
Code 297: (ĩ) letter
Code 298: (Ī) letter
Code 299: (ī) letter
Code 300: (Ĭ) letter
Code 301: (ĭ) letter
Code 302: (Į) letter
Code 303: (į) letter
Code 304: (İ) letter
Code 305: (ı) letter
Code 306: (Ĳ) letter
Code 307: (ĳ) letter
Code 308: (Ĵ) letter
Code 309: (ĵ) letter
Code 310: (Ķ) letter
Code 311: (ķ) letter
Code 312: (ĸ) letter
Code 313: (Ĺ) letter
Code 314: (ĺ) letter
Code 315: (Ļ) letter
Code 316: (ļ) letter
Code 317: (Ľ) letter
Code 318: (ľ) letter
Code 319: (Ŀ) letter
Code 320: (ŀ) letter
Code 321: (Ł) letter
Code 322: (ł) letter
Code 323: (Ń) letter
Code 324: (ń) letter
Code 325: (Ņ) letter
Code 326: (ņ) letter
Code 327: (Ň) letter
Code 328: (ň) letter
Code 329: (ŉ) letter
Code 330: (Ŋ) letter
Code 331: (ŋ) letter
Code 332: (Ō) letter
Code 333: (ō) letter
Code 334: (Ŏ) letter
Code 335: (ŏ) letter
Code 336: (Ő) letter
Code 337: (ő) letter
Code 338: (Œ) letter
Code 339: (œ) letter
Code 340: (Ŕ) letter
Code 341: (ŕ) letter
Code 342: (Ŗ) letter
Code 343: (ŗ) letter
Code 344: (Ř) letter
Code 345: (ř) letter
Code 346: (Ś) letter
Code 347: (ś) letter
Code 348: (Ŝ) letter
Code 349: (ŝ) letter
Code 350: (Ş) letter
Code 351: (ş) letter
Code 352: (Š) letter
Code 353: (š) letter
Code 354: (Ţ) letter
Code 355: (ţ) letter
Code 356: (Ť) letter
Code 357: (ť) letter
Code 358: (Ŧ) letter
Code 359: (ŧ) letter
Code 360: (Ũ) letter
Code 361: (ũ) letter
Code 362: (Ū) letter
Code 363: (ū) letter
Code 364: (Ŭ) letter
Code 365: (ŭ) letter
Code 366: (Ů) letter
Code 367: (ů) letter
Code 368: (Ű) letter
Code 369: (ű) letter
Code 370: (Ų) letter
Code 371: (ų) letter
Code 372: (Ŵ) letter
Code 373: (ŵ) letter
Code 374: (Ŷ) letter
Code 375: (ŷ) letter
Code 376: (Ÿ) letter
Code 377: (Ź) letter
Code 378: (ź) letter
Code 379: (Ż) letter
Code 380: (ż) letter
Code 381: (Ž) letter
Code 382: (ž) letter
Code 383: (ſ) letter
Code 384: (ƀ) letter
Code 385: (Ɓ) letter
Code 386: (Ƃ) letter
Code 387: (ƃ) letter
Code 388: (Ƅ) letter
Code 389: (ƅ) letter
Code 390: (Ɔ) letter
Code 391: (Ƈ) letter
Code 392: (ƈ) letter
Code 393: (Ɖ) letter
Code 394: (Ɗ) letter
Code 395: (Ƌ) letter
Code 396: (ƌ) letter
Code 397: (ƍ) letter
Code 398: (Ǝ) letter
Code 399: (Ə) letter
Code 400: (Ɛ) letter
Code 401: (Ƒ) letter
Code 402: (ƒ) letter
Code 403: (Ɠ) letter
Code 404: (Ɣ) letter
Code 405: (ƕ) letter
Code 406: (Ɩ) letter
Code 407: (Ɨ) letter
Code 408: (Ƙ) letter
Code 409: (ƙ) letter
Code 410: (ƚ) letter
Code 411: (ƛ) letter
Code 412: (Ɯ) letter
Code 413: (Ɲ) letter
Code 414: (ƞ) letter
Code 415: (Ɵ) letter
Code 416: (Ơ) letter
Code 417: (ơ) letter
Code 418: (Ƣ) letter
Code 419: (ƣ) letter
Code 420: (Ƥ) letter
Code 421: (ƥ) letter
Code 422: (Ʀ) letter
Code 423: (Ƨ) letter
Code 424: (ƨ) letter
Code 425: (Ʃ) letter
Code 426: (ƪ) letter
Code 427: (ƫ) letter
Code 428: (Ƭ) letter
Code 429: (ƭ) letter
Code 430: (Ʈ) letter
Code 431: (Ư) letter
Code 432: (ư) letter
Code 433: (Ʊ) letter
Code 434: (Ʋ) letter
Code 435: (Ƴ) letter
Code 436: (ƴ) letter
Code 437: (Ƶ) letter
Code 438: (ƶ) letter
Code 439: (Ʒ) letter
Code 440: (Ƹ) letter
Code 441: (ƹ) letter
Code 442: (ƺ) letter
Code 443: (ƻ) letter
Code 444: (Ƽ) letter
Code 445: (ƽ) letter
Code 446: (ƾ) letter
Code 447: (ƿ) letter
Code 448: (ǀ) letter
Code 449: (ǁ) letter
Code 450: (ǂ) letter
Code 451: (ǃ) letter
Code 452: (Ǆ) letter
Code 453: (ǅ) letter
Code 454: (ǆ) letter
Code 455: (Ǉ) letter
Code 456: (ǈ) letter
Code 457: (ǉ) letter
Code 458: (Ǌ) letter
Code 459: (ǋ) letter
Code 460: (ǌ) letter
Code 461: (Ǎ) letter
Code 462: (ǎ) letter
Code 463: (Ǐ) letter
Code 464: (ǐ) letter
Code 465: (Ǒ) letter
Code 466: (ǒ) letter
Code 467: (Ǔ) letter
Code 468: (ǔ) letter
Code 469: (Ǖ) letter
Code 470: (ǖ) letter
Code 471: (Ǘ) letter
Code 472: (ǘ) letter
Code 473: (Ǚ) letter
Code 474: (ǚ) letter
Code 475: (Ǜ) letter
Code 476: (ǜ) letter
Code 477: (ǝ) letter
Code 478: (Ǟ) letter
Code 479: (ǟ) letter
Code 480: (Ǡ) letter
Code 481: (ǡ) letter
Code 482: (Ǣ) letter
Code 483: (ǣ) letter
Code 484: (Ǥ) letter
Code 485: (ǥ) letter
Code 486: (Ǧ) letter
Code 487: (ǧ) letter
Code 488: (Ǩ) letter
Code 489: (ǩ) letter
Code 490: (Ǫ) letter
Code 491: (ǫ) letter
Code 492: (Ǭ) letter
Code 493: (ǭ) letter
Code 494: (Ǯ) letter
Code 495: (ǯ) letter
Code 496: (ǰ) letter
Code 497: (Ǳ) letter
Code 498: (ǲ) letter
Code 499: (ǳ) letter
Code 500: (Ǵ) letter
Code 501: (ǵ) letter
Code 502: (Ƕ) letter
Code 503: (Ƿ) letter
Code 504: (Ǹ) letter
Code 505: (ǹ) letter
Code 506: (Ǻ) letter
Code 507: (ǻ) letter
Code 508: (Ǽ) letter
Code 509: (ǽ) letter
Code 510: (Ǿ) letter
Code 511: (ǿ) letter
Code 512: (Ȁ) letter

Answer