pifont.sty.ltxml maps \ding{...} to wrong symbols

[siegfriedzoetzsche]

The mapping

    sub dingbat_map {
      my ($code) = @_;
      return pack('U', $code + 0x2700); }

in pifont.sty.ltxml is wrong because from Table 2 in psnfss2e.pdf ([1] http://ftp.gwdg.de/pub/ctan/macros/latex/required/psnfss/psnfss2e.pdf) and pifont.ucf ([2] for me at /texlive/texmf-dist/doc/latex/ucs/config/pifont.ucf) we can see that ding{XYZ} does not necessarily map to U<XYZ + 0x2700>.

I compiled a test file ding.tex that contains all the \ding symbols listed in [2]

    \documentclass{article}
    \usepackage[utf8]{inputenc}
    \usepackage{pifont}
    \begin{document}
    U+2701	\ding{"21}%[✁]
    \par U+2702	\ding{"22}%[✂]
    \par U+2703	\ding{"23}%[✃]
    \par U+2704	\ding{"24}%[✄]
    \par U+260E	\ding{"25}%[☎]
    \par U+2706	\ding{"26}%[✆]
    \par U+2707	\ding{"27}%[✇]
    \par U+2708	\ding{"28}%[✈]
    \par U+2709	\ding{"29}%[✉]
    \par U+261B	\ding{"2A}%[☛]
    \par U+261E	\ding{"2B}%[☞]
    \par U+270C	\ding{"2C}%[✌]
    \par U+270D	\ding{"2D}%[✍]
    \par U+270E	\ding{"2E}%[✎]
    \par U+270F	\ding{"2F}%[✏]
    \par U+2710	\ding{"30}%[✐]
    \par U+2711	\ding{"31}%[✑]
    \par U+2712	\ding{"32}%[✒]
    \par U+2713	\ding{"33}%[✓]
    \par U+2714	\ding{"34}%[✔]
    \par U+2715	\ding{"35}%[✕]
    \par U+2716	\ding{"36}%[✖]
    \par U+2717	\ding{"37}%[✗]
    \par U+2718	\ding{"38}%[✘]
    \par U+2719	\ding{"39}%[✙]
    \par U+271A	\ding{"3A}%[✚]
    \par U+271B	\ding{"3B}%[✛]
    \par U+271C	\ding{"3C}%[✜]
    \par U+271D	\ding{"3D}%[✝]
    \par U+271E	\ding{"3E}%[✞]
    \par U+271F	\ding{"3F}%[✟]
    \par U+2720	\ding{"40}%[✠]
    \par U+2721	\ding{"41}%[✡]
    \par U+2722	\ding{"42}%[✢]
    \par U+2723	\ding{"43}%[✣]
    \par U+2724	\ding{"44}%[✤]
    \par U+2725	\ding{"45}%[✥]
    \par U+2726	\ding{"46}%[✦]
    \par U+2727	\ding{"47}%[✧]
    \par U+2605	\ding{"48}%[★]
    \par U+2729	\ding{"49}%[✩]
    \par U+272A	\ding{"4A}%[✪]
    \par U+272B	\ding{"4B}%[✫]
    \par U+272C	\ding{"4C}%[✬]
    \par U+272D	\ding{"4D}%[✭]
    \par U+272E	\ding{"4E}%[✮]
    \par U+272F	\ding{"4F}%[✯]
    \par U+2730	\ding{"50}%[✰]
    \par U+2731	\ding{"51}%[✱]
    \par U+2732	\ding{"52}%[✲]
    \par U+2733	\ding{"53}%[✳]
    \par U+2734	\ding{"54}%[✴]
    \par U+2735	\ding{"55}%[✵]
    \par U+2736	\ding{"56}%[✶]
    \par U+2737	\ding{"57}%[✷]
    \par U+2738	\ding{"58}%[✸]
    \par U+2739	\ding{"59}%[✹]
    \par U+273A	\ding{"5A}%[✺]
    \par U+273B	\ding{"5B}%[✻]
    \par U+273C	\ding{"5C}%[✼]
    \par U+273D	\ding{"5D}%[✽]
    \par U+273E	\ding{"5E}%[✾]
    \par U+273F	\ding{"5F}%[✿]
    \par U+2740	\ding{"60}%[❀]
    \par U+2741	\ding{"61}%[❁]
    \par U+2742	\ding{"62}%[❂]
    \par U+2743	\ding{"63}%[❃]
    \par U+2744	\ding{"64}%[❄]
    \par U+2745	\ding{"65}%[❅]
    \par U+2746	\ding{"66}%[❆]
    \par U+2747	\ding{"67}%[❇]
    \par U+2748	\ding{"68}%[❈]
    \par U+2749	\ding{"69}%[❉]
    \par U+274A	\ding{"6A}%[❊]
    \par U+274B	\ding{"6B}%[❋]
    \par U+25CF	\ding{"6C}%[●]
    \par U+274D	\ding{"6D}%[❍]
    \par U+25A0	\ding{"6E}%[■]
    \par U+274F	\ding{"6F}%[❏]
    \par U+2750	\ding{"70}%[❐]
    \par U+2751	\ding{"71}%[❑]
    \par U+2752	\ding{"72}%[❒]
    \par U+25B2	\ding{"73}%[▲]
    \par U+25BC	\ding{"74}%[▼]
    \par U+25C6	\ding{"75}%[◆]
    \par U+2756	\ding{"76}%[❖]
    \par U+25D7	\ding{"77}%[◗]
    \par U+2758	\ding{"78}%[❘]
    \par U+2759	\ding{"79}%[❙]
    \par U+275A	\ding{"7A}%[❚]
    \par U+275B	\ding{"7B}%[❛]
    \par U+275C	\ding{"7C}%[❜]
    \par U+275D	\ding{"7D}%[❝]
    \par U+275E	\ding{"7E}%[❞]
    \par U+2761	\ding{"A1}%[❡]
    \par U+2762	\ding{"A2}%[❢]
    \par U+2763	\ding{"A3}%[❣]
    \par U+2764	\ding{"A4}%[❤]
    \par U+2765	\ding{"A5}%[❥]
    \par U+2766	\ding{"A6}%[❦]
    \par U+2767	\ding{"A7}%[❧]
    \par U+2666	\ding{"A9}%[♦]
    \par U+2665	\ding{"AA}%[♥]
    \par U+2460	\ding{"AC}%[①]
    \par U+2461	\ding{"AD}%[②]
    \par U+2462	\ding{"AE}%[③]
    \par U+2463	\ding{"AF}%[④]
    \par U+2464	\ding{"B0}%[⑤]
    \par U+2465	\ding{"B1}%[⑥]
    \par U+2466	\ding{"B2}%[⑦]
    \par U+2467	\ding{"B3}%[⑧]
    \par U+2468	\ding{"B4}%[⑨]
    \par U+2469	\ding{"B5}%[⑩]
    \par U+2776	\ding{"B6}%[❶]
    \par U+2777	\ding{"B7}%[❷]
    \par U+2778	\ding{"B8}%[❸]
    \par U+2779	\ding{"B9}%[❹]
    \par U+277A	\ding{"BA}%[❺]
    \par U+277B	\ding{"BB}%[❻]
    \par U+277C	\ding{"BC}%[❼]
    \par U+277D	\ding{"BD}%[❽]
    \par U+277E	\ding{"BE}%[❾]
    \par U+277F	\ding{"BF}%[❿]
    \par U+2780	\ding{"C0}%[➀]
    \par U+2781	\ding{"C1}%[➁]
    \par U+2782	\ding{"C2}%[➂]
    \par U+2783	\ding{"C3}%[➃]
    \par U+2784	\ding{"C4}%[➄]
    \par U+2785	\ding{"C5}%[➅]
    \par U+2786	\ding{"C6}%[➆]
    \par U+2787	\ding{"C7}%[➇]
    \par U+2788	\ding{"C8}%[➈]
    \par U+2789	\ding{"C9}%[➉]
    \par U+278A	\ding{"CA}%[➊]
    \par U+278B	\ding{"CB}%[➋]
    \par U+278C	\ding{"CC}%[➌]
    \par U+278D	\ding{"CD}%[➍]
    \par U+278E	\ding{"CE}%[➎]
    \par U+278F	\ding{"CF}%[➏]
    \par U+2790	\ding{"D0}%[➐]
    \par U+2791	\ding{"D1}%[➑]
    \par U+2792	\ding{"D2}%[➒]
    \par U+2793	\ding{"D3}%[➓]
    \par U+2794	\ding{"D4}%[➔]
    \par U+2194	\ding{"D6}%[↔]
    \par U+2195	\ding{"D7}%[↕]
    \par U+2798	\ding{"D8}%[➘]
    \par U+2799	\ding{"D9}%[➙]
    \par U+279A	\ding{"DA}%[➚]
    \par U+279B	\ding{"DB}%[➛]
    \par U+279C	\ding{"DC}%[➜]
    \par U+279D	\ding{"DD}%[➝]
    \par U+279E	\ding{"DE}%[➞]
    \par U+279F	\ding{"DF}%[➟]
    \par U+27A0	\ding{"E0}%[➠]
    \par U+27A1	\ding{"E1}%[➡]
    \par U+27A2	\ding{"E2}%[➢]
    \par U+27A3	\ding{"E3}%[➣]
    \par U+27A4	\ding{"E4}%[➤]
    \par U+27A5	\ding{"E5}%[➥]
    \par U+27A6	\ding{"E6}%[➦]
    \par U+27A7	\ding{"E7}%[➧]
    \par U+27A8	\ding{"E8}%[➨]
    \par U+27A9	\ding{"E9}%[➩]
    \par U+27AA	\ding{"EA}%[➪]
    \par U+27AB	\ding{"EB}%[➫]
    \par U+27AC	\ding{"EC}%[➬]
    \par U+27AD	\ding{"ED}%[➭]
    \par U+27AE	\ding{"EE}%[➮]
    \par U+27AF	\ding{"EF}%[➯]
    \par U+27B1	\ding{"F1}%[➱]
    \par U+27B2	\ding{"F2}%[➲]
    \par U+27B3	\ding{"F3}%[➳]
    \par U+27B4	\ding{"F4}%[➴]
    \par U+27B5	\ding{"F5}%[➵]
    \par U+27B6	\ding{"F6}%[➶]
    \par U+27B7	\ding{"F7}%[➷]
    \par U+27B8	\ding{"F8}%[➸]
    \par U+27B9	\ding{"F9}%[➹]
    \par U+27BA	\ding{"FA}%[➺]
    \par U+27BB	\ding{"FB}%[➻]
    \par U+27BC	\ding{"FC}%[➼]
    \par U+27BD	\ding{"FD}%[➽]
    \par U+27BE	\ding{"FE}%[➾]
    \end{document}

I used the ouputs of

latex ding.tex

and

latexml ding.tex -destination ding.xml

for comparison.

Modifying pifont.sty.ltxml by adding

    our %dingbat_code_map = (
        0x21 => 0x2701, # [✁]
        0x22 => 0x2702, # [✂]
        0x23 => 0x2703, # [✃]
        0x24 => 0x2704, # [✄]
        0x25 => 0x260E, # [☎]
        0x26 => 0x2706, # [✆]
        0x27 => 0x2707, # [✇]
        0x28 => 0x2708, # [✈]
        0x29 => 0x2709, # [✉]
        0x2A => 0x261B, # [☛]
        0x2B => 0x261E, # [☞]
        0x2C => 0x270C, # [✌]
        0x2D => 0x270D, # [✍]
        0x2E => 0x270E, # [✎]
        0x2F => 0x270F, # [✏]
        0x30 => 0x2710, # [✐]
        0x31 => 0x2711, # [✑]
        0x32 => 0x2712, # [✒]
        0x33 => 0x2713, # [✓]
        0x34 => 0x2714, # [✔]
        0x35 => 0x2715, # [✕]
        0x36 => 0x2716, # [✖]
        0x37 => 0x2717, # [✗]
        0x38 => 0x2718, # [✘]
        0x39 => 0x2719, # [✙]
        0x3A => 0x271A, # [✚]
        0x3B => 0x271B, # [✛]
        0x3C => 0x271C, # [✜]
        0x3D => 0x271D, # [✝]
        0x3E => 0x271E, # [✞]
        0x3F => 0x271F, # [✟]
        0x40 => 0x2720, # [✠]
        0x41 => 0x2721, # [✡]
        0x42 => 0x2722, # [✢]
        0x43 => 0x2723, # [✣]
        0x44 => 0x2724, # [✤]
        0x45 => 0x2725, # [✥]
        0x46 => 0x2726, # [✦]
        0x47 => 0x2727, # [✧]
        0x48 => 0x2605, # [★]
        0x49 => 0x2729, # [✩]
        0x4A => 0x272A, # [✪]
        0x4B => 0x272B, # [✫]
        0x4C => 0x272C, # [✬]
        0x4D => 0x272D, # [✭]
        0x4E => 0x272E, # [✮]
        0x4F => 0x272F, # [✯]
        0x50 => 0x2730, # [✰]
        0x51 => 0x2731, # [✱]
        0x52 => 0x2732, # [✲]
        0x53 => 0x2733, # [✳]
        0x54 => 0x2734, # [✴]
        0x55 => 0x2735, # [✵]
        0x56 => 0x2736, # [✶]
        0x57 => 0x2737, # [✷]
        0x58 => 0x2738, # [✸]
        0x59 => 0x2739, # [✹]
        0x5A => 0x273A, # [✺]
        0x5B => 0x273B, # [✻]
        0x5C => 0x273C, # [✼]
        0x5D => 0x273D, # [✽]
        0x5E => 0x273E, # [✾]
        0x5F => 0x273F, # [✿]
        0x60 => 0x2740, # [❀]
        0x61 => 0x2741, # [❁]
        0x62 => 0x2742, # [❂]
        0x63 => 0x2743, # [❃]
        0x64 => 0x2744, # [❄]
        0x65 => 0x2745, # [❅]
        0x66 => 0x2746, # [❆]
        0x67 => 0x2747, # [❇]
        0x68 => 0x2748, # [❈]
        0x69 => 0x2749, # [❉]
        0x6A => 0x274A, # [❊]
        0x6B => 0x274B, # [❋]
        0x6C => 0x25CF, # [●]
        0x6D => 0x274D, # [❍]
        0x6E => 0x25A0, # [■]
        0x6F => 0x274F, # [❏]
        0x70 => 0x2750, # [❐]
        0x71 => 0x2751, # [❑]
        0x72 => 0x2752, # [❒]
        0x73 => 0x25B2, # [▲]
        0x74 => 0x25BC, # [▼]
        0x75 => 0x25C6, # [◆]
        0x76 => 0x2756, # [❖]
        0x77 => 0x25D7, # [◗]
        0x78 => 0x2758, # [❘]
        0x79 => 0x2759, # [❙]
        0x7A => 0x275A, # [❚]
        0x7B => 0x275B, # [❛]
        0x7C => 0x275C, # [❜]
        0x7D => 0x275D, # [❝]
        0x7E => 0x275E, # [❞]
        0xA1 => 0x2761, # [❡]
        0xA2 => 0x2762, # [❢]
        0xA3 => 0x2763, # [❣]
        0xA4 => 0x2764, # [❤]
        0xA5 => 0x2765, # [❥]
        0xA6 => 0x2766, # [❦]
        0xA7 => 0x2767, # [❧]
        0xA9 => 0x2666, # [♦]
        0xAA => 0x2665, # [♥]
        0xAC => 0x2460, # [①]
        0xAD => 0x2461, # [②]
        0xAE => 0x2462, # [③]
        0xAF => 0x2463, # [④]
        0xB0 => 0x2464, # [⑤]
        0xB1 => 0x2465, # [⑥]
        0xB2 => 0x2466, # [⑦]
        0xB3 => 0x2467, # [⑧]
        0xB4 => 0x2468, # [⑨]
        0xB5 => 0x2469, # [⑩]
        0xB6 => 0x2776, # [❶]
        0xB7 => 0x2777, # [❷]
        0xB8 => 0x2778, # [❸]
        0xB9 => 0x2779, # [❹]
        0xBA => 0x277A, # [❺]
        0xBB => 0x277B, # [❻]
        0xBC => 0x277C, # [❼]
        0xBD => 0x277D, # [❽]
        0xBE => 0x277E, # [❾]
        0xBF => 0x277F, # [❿]
        0xC0 => 0x2780, # [➀]
        0xC1 => 0x2781, # [➁]
        0xC2 => 0x2782, # [➂]
        0xC3 => 0x2783, # [➃]
        0xC4 => 0x2784, # [➄]
        0xC5 => 0x2785, # [➅]
        0xC6 => 0x2786, # [➆]
        0xC7 => 0x2787, # [➇]
        0xC8 => 0x2788, # [➈]
        0xC9 => 0x2789, # [➉]
        0xCA => 0x278A, # [➊]
        0xCB => 0x278B, # [➋]
        0xCC => 0x278C, # [➌]
        0xCD => 0x278D, # [➍]
        0xCE => 0x278E, # [➎]
        0xCF => 0x278F, # [➏]
        0xD0 => 0x2790, # [➐]
        0xD1 => 0x2791, # [➑]
        0xD2 => 0x2792, # [➒]
        0xD3 => 0x2793, # [➓]
        0xD4 => 0x2794, # [➔]
        0xD6 => 0x2194, # [↔]
        0xD7 => 0x2195, # [↕]
        0xD8 => 0x2798, # [➘]
        0xD9 => 0x2799, # [➙]
        0xDA => 0x279A, # [➚]
        0xDB => 0x279B, # [➛]
        0xDC => 0x279C, # [➜]
        0xDD => 0x279D, # [➝]
        0xDE => 0x279E, # [➞]
        0xDF => 0x279F, # [➟]
        0xE0 => 0x27A0, # [➠]
        0xE1 => 0x27A1, # [➡]
        0xE2 => 0x27A2, # [➢]
        0xE3 => 0x27A3, # [➣]
        0xE4 => 0x27A4, # [➤]
        0xE5 => 0x27A5, # [➥]
        0xE6 => 0x27A6, # [➦]
        0xE7 => 0x27A7, # [➧]
        0xE8 => 0x27A8, # [➨]
        0xE9 => 0x27A9, # [➩]
        0xEA => 0x27AA, # [➪]
        0xEB => 0x27AB, # [➫]
        0xEC => 0x27AC, # [➬]
        0xED => 0x27AD, # [➭]
        0xEE => 0x27AE, # [➮]
        0xEF => 0x27AF, # [➯]
        0xF1 => 0x27B1, # [➱]
        0xF2 => 0x27B2, # [➲]
        0xF3 => 0x27B3, # [➳]
        0xF4 => 0x27B4, # [➴]
        0xF5 => 0x27B5, # [➵]
        0xF6 => 0x27B6, # [➶]
        0xF7 => 0x27B7, # [➷]
        0xF8 => 0x27B8, # [➸]
        0xF9 => 0x27B9, # [➹]
        0xFA => 0x27BA, # [➺]
        0xFB => 0x27BB, # [➻]
        0xFC => 0x27BC, # [➼]
        0xFD => 0x27BD, # [➽]
        0xFE => 0x27BE # [➾]
        );

and changing sub dingbat_map to

    sub dingbat_map {
      my ($code) = @_;
      return pack('U', $dingbat_code_map{$code}); }

my test file produces the correct xml output.

What I am not sure about is what \ding{32} should map to.
It is listed in Table 2 in [1] but not in [2].

I also noticed that latex does not complain about \ding{X} for any character codes X in [0,255] but throws an ! Bad character code for X > 255.
So I am not sure what the desired behaviour of latexml would be for \ding{20} for example which gives no errors in latex but is not listed in [1] or [2].
Those "undefines" character codes seem to produce no ouput in latex.

[brucemiller]

Hmm...old code, before I figured out to simulate fontmaps, but still, it was pretty way off!
I fixed it up, using your suggestions as a guide (but made a fontmap file). Thanks!!