[konsole] [Bug 387811] Curly and colored underlines

[migtex]

https://bugs.kde.org/show_bug.cgi?id=387811

--- Comment #4 from migtex <migtex2 at gmail.com> ---
Sorry i should have linked the sauce the first time... 
I've lost the reference, the reference on the code is not correct and this was
still stored in my pc.
The credit for this is not mine
Here it is:
#!/bin/sh

echo "# 24-bit (true-color)"
# based on: https://gist.github.com/XVilka/8346728
term_cols="$(tput cols || echo 80)"
cols=$(echo "2^((l($term_cols)/l(2))-1)" | bc -l 2> /dev/null)
rows=$(( cols / 2 ))
awk -v cols="$cols" -v rows="$rows" 'BEGIN{
    s="  ";
    m=cols+rows;
    for (row = 0; row<rows; row++) {
      for (col = 0; col<cols; col++) {
          i = row+col;
          r = 255-(i*255/m);
          g = (i*510/m);
          b = (i*255/m);
          if (g>255) g = 510-g;
          printf "\033[48;2;%d;%d;%dm", r,g,b;
          printf "\033[38;2;%d;%d;%dm", 255-r,255-g,255-b;
          printf "%s\033[0m", substr(s,(col+row)%2+1,1);
      }
      printf "\n";
    }
    printf "\n\n";
}'

echo "# text decorations"
printf '\e[1mbold\e[22m\n'
printf '\e[2mdim\e[22m\n'
printf '\e[3mitalic\e[23m\n'
printf '\e[4munderline\e[24m\n'
printf '\e[4:1mthis is also underline\e[24m\n'
printf '\e[21mdouble underline\e[24m\n'
printf '\e[4:2mthis is also double underline\e[24m\n'
printf '\e[4:3mcurly underline\e[24m\n'
printf '\e[58;5;10;4mcolored underline\e[59;24m\n'
printf '\e[5mblink\e[25m\n'
printf '\e[7mreverse\e[27m\n'
printf '\e[8minvisible\e[28m <- invisible (but copy-pasteable)\n'
printf '\e[9mstrikethrough\e[29m\n'
printf '\e[53moverline\e[55m\n'
echo

echo "# magic string (see https://en.wikipedia.org/wiki/Unicode#Web)"
echo "é Δ Й ק م ๗ あ 叶 葉 말"
echo

echo "# emojis"
echo ""
echo

echo "# right-to-left ('w' symbol should be at right side)"
echo "שרה"
echo

echo "# sixel graphics"
printf '\eP0;0;0q"1;1;64;64#0;2;0;0;0#1;2;100;100;100#1~{wo_!11?@FN^!34~^NB
@?_ow{~$#0?BFN^!11~}wo_!34?_o{}~^NFB-#1!5~}{o_!12?BF^!25~^NB@??ow{!6~$#0!5?
@BN^!12~{w_!25?_o{}~~NFB-#1!10~}w_!12?@BN^!15~^NFB@?_w{}!10~$#0!10?@F^!12~}
{o_!15?_ow{}~^FB at -#1!14~}{o_!11?@BF^!7~^FB??_ow}!15~$#0!14?@BN^!11~}{w_!7?_
w{~~^NF at -#1!18~}{wo!11?_r^FB@??ow}!20~$#0!18?@BFN!11~^K_w{}~~NF at -#1!23~M!4?
_oWMF@!6?BN^!21~$#0!23?p!4~^Nfpw}!6~{o_-#1!18~^NB@?_ow{}~wo!12?@BFN!17~$#0!
18?_o{}~^NFB@?FN!12~}{wo-#1!13~^NB@??_w{}!9~}{w_!12?BFN^!12~$#0!13?_o{}~~^F
B@!9?@BF^!12~{wo_-#1!8~^NFB@?_w{}!19~{wo_!11?@BN^!8~$#0!8?_ow{}~^FB@!19?BFN
^!11~}{o_-#1!4~^NB@?_ow{!28~}{o_!12?BF^!4~$#0!4?_o{}~^NFB!28?@BN^!12~{w_-#1
NB@???GM!38NMG!13?@BN$#0?KMNNNF@!38?@F!13NMK-\e\'

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