.functions_unicode

# ~/.functions_unicode
# Defines shell functions for parsing unicode characters.

# Print characters from Unicode ranges matching rg-lang patterns
# Args: {name}
pl-print-chars() {
  case "$1" in
    # CJK Scripts (East Asian)
    "chinese") pl-print-unicode-range 0x4E00 0x9FFF ;;
    "chinese-ext") pl-print-unicode-range 0x3400 0x4DBF ;;
    "chinese-rare") pl-print-unicode-range 0x20000 0x2A6DF ;;
    "cjk-radicals") pl-print-unicode-range 0x2E80 0x2EFF ;;
    "cjk-strokes") pl-print-unicode-range 0x31C0 0x31EF ;;
    "cjk-symbols") pl-print-unicode-range 0x3200 0x32FF ;;

    # Japanese Scripts
    "japanese-half") pl-print-unicode-range 0xFF66 0xFF9F ;;
    "japanese-kana")
      pl-print-unicode-range 0x3040 0x309F  # Hiragana
      pl-print-unicode-range 0x30A0 0x30FF  # Katakana
      ;;

    # Korean Scripts
    "korean-jamo") pl-print-unicode-range 0x1100 0x11FF ;;
    "korean-compat") pl-print-unicode-range 0x3130 0x318F ;;
    "korean-syllables") pl-print-unicode-range 0xAC00 0xD7AF ;;
    "korean-jamo-ext") pl-print-unicode-range 0xA960 0xA97F ;;

    # Indic Scripts (South Asian)
    "bengali") pl-print-unicode-range 0x0980 0x09FF ;;
    "devanagari") pl-print-unicode-range 0x0900 0x097F ;;
    "gujarati") pl-print-unicode-range 0x0A80 0x0AFF ;;
    "gurmukhi") pl-print-unicode-range 0x0A00 0x0A7F ;;
    "kannada") pl-print-unicode-range 0x0C80 0x0CFF ;;
    "malayalam") pl-print-unicode-range 0x0D00 0x0D7F ;;
    "oriya") pl-print-unicode-range 0x0B00 0x0B7F ;;
    "sinhala") pl-print-unicode-range 0x0D80 0x0DFF ;;
    "tamil") pl-print-unicode-range 0x0B80 0x0BFF ;;
    "telugu") pl-print-unicode-range 0x0C00 0x0C7F ;;

    # Southeast Asian Scripts
    "balinese") pl-print-unicode-range 0x1B00 0x1B7F ;;
    "javanese") pl-print-unicode-range 0xA980 0xA9DF ;;
    "khmer") pl-print-unicode-range 0x1780 0x17FF ;;
    "lao") pl-print-unicode-range 0x0E80 0x0EFF ;;
    "myanmar") pl-print-unicode-range 0x1000 0x109F ;;
    "sundanese") pl-print-unicode-range 0x1B80 0x1BBF ;;
    "thai") pl-print-unicode-range 0x0E00 0x0E7F ;;

    # Middle Eastern Scripts
    "arabic") pl-print-unicode-range 0x0621 0x0669 ;;
    "hebrew") pl-print-unicode-range 0x0590 0x05FE ;;
    "syriac") pl-print-unicode-range 0x0700 0x074F ;;
    "thaana") pl-print-unicode-range 0x0780 0x07BF ;;

    # Ancient Scripts
    "ancient-greek") pl-print-unicode-range 0x10140 0x1018F ;;
    "cuneiform") pl-print-unicode-range 0x12000 0x123FF ;;
    "hieroglyph") pl-print-unicode-range 0x13000 0x1342F ;;
    "linearb") pl-print-unicode-range 0x10000 0x1007F ;;
    "phoenician") pl-print-unicode-range 0x10900 0x1091F ;;

    # European Scripts
    "armenian") pl-print-unicode-range 0x0531 0x0587 ;;
    "coptic") pl-print-unicode-range 0x2C80 0x2CFF ;;
    "cyrillic-ext")
      pl-print-unicode-range 0x0400 0x04FF
      pl-print-unicode-range 0x0500 0x052F ;;
    "european") pl-print-unicode-range 0x0100 0x024F ;;
    "glagolitic") pl-print-unicode-range 0x2C00 0x2C5F ;;
    "gothic") pl-print-unicode-range 0x10330 0x1034F ;;
    "greek") pl-print-unicode-range 0x0374 0x03FF ;;
    "ogham") pl-print-unicode-range 0x1680 0x169F ;;
    "olditalic") pl-print-unicode-range 0x10300 0x1032F ;;
    "runic") pl-print-unicode-range 0x16A0 0x16FF ;;

    # African Scripts
    "adlam") pl-print-unicode-range 0x1E900 0x1E95F ;;
    "bamum") pl-print-unicode-range 0xA6A0 0xA6FF ;;
    "ethiopic") pl-print-unicode-range 0x1200 0x137F ;;
    "nko") pl-print-unicode-range 0x07C0 0x07FF ;;
    "tifinagh") pl-print-unicode-range 0x2D30 0x2D7F ;;
    "vai") pl-print-unicode-range 0xA500 0xA63F ;;

    # Symbolic and Technical
    "arrows") pl-print-unicode-range 0x2190 0x21FF ;;
    "box-drawing") pl-print-unicode-range 0x2500 0x257F ;;
    "braille") pl-print-unicode-range 0x2800 0x28FF ;;
    "currency") pl-print-unicode-range 0x20A0 0x20CF ;;
    "dingbats") pl-print-unicode-range 0x2700 0x27BF ;;
    "math-operators") pl-print-unicode-range 0x2200 0x22FF ;;
    "math-symbols") pl-print-unicode-range 0x27C0 0x27EF ;;
    "math-arrows") pl-print-unicode-range 0x27F0 0x27FF ;;
    "math-ext") pl-print-unicode-range 0x1D400 0x1D7FF ;;
    "phonetic") pl-print-unicode-range 0x1D00 0x1D7F ;;
    "phonetic-ext") pl-print-unicode-range 0x1D80 0x1DBF ;;
    "punctuation") pl-print-unicode-range 0x2000 0x206F ;;
    "superscript") pl-print-unicode-range 0x2070 0x209F ;;
    "tech-symbols") pl-print-unicode-range 0x2300 0x23FF ;;

    # Game Symbols
    "cards") pl-print-unicode-range 0x1F0A0 0x1F0FF ;;
    "chess") pl-print-unicode-range 0x2654 0x265F ;;
    "dice") pl-print-unicode-range 0x2680 0x2685 ;;
    "domino") pl-print-unicode-range 0x1F030 0x1F093 ;;
    "mahjong") pl-print-unicode-range 0x1F000 0x1F02F ;;

    # Emoji Categories
    "emoji") pl-print-unicode-range 0x1F300 0x1F9FF ;;
    "emoji-basic") pl-print-unicode-range 0x1F1FF 0x1F600 ;;
    "emoji-emotions") pl-print-unicode-range 0x1F600 0x1F64F ;;
    "emoji-food") pl-print-unicode-range 0x1F32D 0x1F37F ;;
    "emoji-transport") pl-print-unicode-range 0x1F680 0x1F6FF ;;
    "emoji-misc") pl-print-unicode-range 0x1F300 0x1F5FF ;;

    # Other Scripts
    "mongolian") pl-print-unicode-range 0x1800 0x18AF ;;
    "mongolian-ext") pl-print-unicode-range 0x11660 0x1167F ;;
    "tibetan") pl-print-unicode-range 0x0F00 0x0FFF ;;
    "yi") pl-print-unicode-range 0xA000 0xA48F ;;

    # Combined Ranges
    "cjk")
      pl-print-unicode-range 0x4E00 0x9FFF    # Basic
      pl-print-unicode-range 0x3400 0x4DBF    # Extension A
      pl-print-unicode-range 0x20000 0x2A6DF  # Extension B
      ;;
    "east-asian")
      pl-print-unicode-range 0x4E00 0x9FFF    # CJK
      pl-print-unicode-range 0x3040 0x30FF    # Japanese
      pl-print-unicode-range 0xAC00 0xD7AF    # Korean
      ;;
    "south-asian") pl-print-unicode-range 0x0900 0x0FFF ;;
    "african-ext")
      pl-print-unicode-range 0x1E900 0x1E95F  # Adlam
      pl-print-unicode-range 0x07C0 0x07FF    # NKo
      ;;
    "math-all")
      pl-print-unicode-range 0x2200 0x22FF    # Operators
      pl-print-unicode-range 0x27C0 0x27FF    # Symbols & Arrows
      pl-print-unicode-range 0x2A00 0x2AFF    # Supplemental
      ;;
    "games-all")
      pl-print-unicode-range 0x1F0A0 0x1F0FF  # Cards
      pl-print-unicode-range 0x2654 0x265F    # Chess
      pl-print-unicode-range 0x2680 0x2685    # Dice
      pl-print-unicode-range 0x1F000 0x1F09F  # Mahjong & Domino
      ;;
    "music-all")
      pl-print-unicode-range 0x1D100 0x1D1FF  # Musical Symbols
      pl-print-unicode-range 0x1D200 0x1D24F  # Ancient Notation
      ;;

    # Help
    "help"|"--help"|"-h"|"")
      echo "Usage: pl-print-chars TYPE"
      echo "Print Unicode characters from specified script range"
      echo
      echo "Available Types:"
      echo "  CJK: chinese, chinese-ext, chinese-rare, cjk-radicals, cjk-strokes, cjk-symbols"
      echo "  Japanese: japanese-half, japanese-kana, japanese-kanji"
      echo "  Korean: korean-jamo, korean-compat, korean-syllables, korean-jamo-ext"
      echo "  Indic: bengali, devanagari, gujarati, gurmukhi, kannada, malayalam, oriya, sinhala, tamil, telugu"
      echo "  Southeast Asian: balinese, javanese, khmer, lao, myanmar, sundanese, thai"
      echo "  Middle Eastern: arabic, hebrew, syriac, thaana"
      echo "  Ancient: ancient-greek, cuneiform, hieroglyph, linearb, phoenician"
      echo "  European: armenian, coptic, cyrillic-ext, european, glagolitic, gothic, greek, ogham, olditalic, runic"
      echo "  African: adlam, bamum, ethiopic, nko, tifinagh, vai"
      echo "  Symbolic: arrows, box-drawing, braille, currency, dingbats, math-operators, math-symbols, math-arrows, math-ext"
      echo "  Technical: tech-symbols, phonetic, phonetic-ext, superscript"
      echo "  Games: cards, chess, dice, domino, mahjong"
      echo "  Emoji: emoji, emoji-basic, emoji-emotions, emoji-food, emoji-transport, emoji-misc"
      echo "  Other: mongolian, mongolian-ext, tibetan, yi"
      echo "  Combined: cjk, east-asian, south-asian, african-ext, math-all, games-all, music-all"
      ;;
    *)
      echo "Unknown char type: $1"
      echo "Use 'pl-print-chars help' to see available options"
      return 1
      ;;
  esac
}

# Print Unicode range.
# Args: {range1} {range2}
pl-print-unicode-range() {
  cat <<_EOF | perl
    binmode(STDOUT, ":encoding(UTF-8)");
    for (\$n = $1; \$n <= $2; \$n++) { print chr(\$n) }
_EOF
}

# Filters 2-3 unicode characters.
rg-23u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(printf '$1$2\n$2$3\n$1$2$3')"
}

# Filters 2-4 unicode characters.
rg-234u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(printf '$1$2\n$2$3\n$3$4\n$1$2$3\n$2$3$4\n$1$2$3$4')"
}

# Filters 2-5 unicode characters.
rg-2345u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(printf '$1$2\n$2$3\n$3$4\n$4$5\n$1$2$3\n$2$3$4\n$3$4$5\n$1$2$3$4\n$2$3$4$5\n$1$2$3$4$5')"
}

# Filters 3-6 unicode characters.
rg-3456u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(printf '$1$2$3\n$2$3$4\n$3$4$5\n$4$5$6\n$1$2$3$4\n$2$3$4$5\n$3$4$5$6\n$1$2$3$4$5\n$2$3$4$5$6\n$1$2$3$4$5$6')"
}

# Filters 3-7 unicode characters.
rg-34567u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(printf '$1$2$3\n$2$3$4\n$3$4$5\n$4$5$6\n$5$6$7\n$1$2$3$4\n$2$3$4$5\n$3$4$5$6\n$4$5$6$7\n$1$2$3$4$5\n$2$3$4$5$6\n$3$4$5$6$7\n$1$2$3$4$5$6\n$2$3$4$5$6$7\n$1$2$3$4$5$6$7')"
}

# Filters 3-8 unicode characters.
rg-345678u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(printf '$1$2$3\n$2$3$4\n$3$4$5\n$4$5$6\n$5$6$7\n$6$7$8\n$1$2$3$4\n$2$3$4$5\n$3$4$5$6\n$4$5$6$7\n$5$6$7$8\n$1$2$3$4$5\n$2$3$4$5$6\n$3$4$5$6$7\n$4$5$6$7$8\n$1$2$3$4$5$6\n$2$3$4$5$6$7\n$3$4$5$6$7$8\n$1$2$3$4$5$6$7\n$2$3$4$5$6$7$8\n$1$2$3$4$5$6$7$8')"
}

# Filters 3-9 unicode characters.
rg-3456789u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(printf '$1$2$3\n$2$3$4\n$3$4$5\n$4$5$6\n$5$6$7\n$6$7$8\n$7$8$9\n$1$2$3$4\n$2$3$4$5\n$3$4$5$6\n$4$5$6$7\n$5$6$7$8\n$6$7$8$9\n$1$2$3$4$5\n$2$3$4$5$6\n$3$4$5$6$7\n$4$5$6$7$8\n$5$6$7$8$9\n$1$2$3$4$5$6\n$2$3$4$5$6$7\n$3$4$5$6$7$8\n$4$5$6$7$8$9\n$1$2$3$4$5$6$7\n$2$3$4$5$6$7$8\n$3$4$5$6$7$8$9\n$1$2$3$4$5$6$7$8\n$2$3$4$5$6$7$8$9\n$1$2$3$4$5$6$7$8$9')"
}

# Filters all unicode characters.
rg-all-unicode() {
  tee >/dev/null >(rg-23u) >(rg-234u) >(rg-2345u) >(rg-3456u) >(rg-34567u) >(rg-345678u) >(rg-3456789u)
}

# Filters 2 unicode characters.
rg-perm-2u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 4 4 + + 12 -t '$%$%' 2>/dev/null)"
}

# Permutate 3 unicode characters.
rg-perm-3u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 6 6 + + 123 -t '$%$%$%' 2>/dev/null)"
}

# Permutate 4 unicode characters.
rg-perm-4u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 8 8 + + 1234 -t '$%$%$%$%' 2>/dev/null)"
}

# Permutate 5 unicode characters.
rg-perm-5u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 10 10 + + 12345 -t '$%$%$%$%$%' 2>/dev/null)"
}

# Permutate 5 unicode characters into 3.
rg-perm-5u-to-3u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 6 6 + + 12345 -t '$%$%$%' 2>/dev/null)"
}

# Permutate 5 unicode characters into 4.
rg-perm-5u-to-4u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 8 8 + + 12345 -t '$%$%$%$%' 2>/dev/null)"
}

# Permutate 6 unicode characters into 3.
rg-perm-6u-to-3u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 6 6 + + 123456 -t '$%$%$%' 2>/dev/null)"
}

# Permutate 6 unicode characters into 4.
rg-perm-6u-to-4u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 8 8 + + 123456 -t '$%$%$%$%' 2>/dev/null)"
}

# Permutate 6 unicode characters into 5.
rg-perm-6u-to-5u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 10 10 + + 123456 -t '$%$%$%$%$%' 2>/dev/null)"
}

# Permutate 7 unicode characters into 3.
rg-perm-7u-to-3u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 6 6 + + 1234567 -t '$%$%$%' 2>/dev/null)"
}

# Permutate 7 unicode characters into 4.
rg-perm-7u-to-4u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 8 8 + + 1234567 -t '$%$%$%$%' 2>/dev/null)"
}

# Permutate 7 unicode characters into 5.
rg-perm-7u-to-5u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 10 10 + + 1234567 -t '$%$%$%$%$%' 2>/dev/null)"
}

# Permutate 8 unicode characters into 3.
rg-perm-8u-to-3u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 6 6 + + 12345678 -t '$%$%$%' 2>/dev/null)"
}

# Permutate 8 unicode characters into 4.
rg-perm-8u-to-4u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 8 8 + + 12345678 -t '$%$%$%$%' 2>/dev/null)"
}

# Permutate 8 unicode characters into 5.
rg-perm-8u-to-5u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 10 10 + + 12345678 -t '$%$%$%$%$%' 2>/dev/null)"
}

# Permutate 9 unicode characters into 3.
rg-perm-9u-to-3u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 6 6 + + 123456789 -t '$%$%$%' 2>/dev/null)"
}

# Permutate 9 unicode characters into 4.
rg-perm-9u-to-4u() {
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$(crunch 8 8 + + 123456789 -t '$%$%$%$%' 2>/dev/null)"
}

# Permutate 9 unicode characters into 5.
rg-perm-9u-to-5u() {
  rg_r_arg="$(crunch 5 5 34567 -p 34567 2>/dev/null | sed -E 's/([0-9])/$\1/g;s/([0-9])\$/\1\$/g')"
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$rg_r_arg"
}

# Permutate 9 unicode characters into 6.
rg-perm-9u-to-6u() {
  rg_r_arg="$(crunch 5 5 345678 -p 345678 2>/dev/null | sed -E 's/([0-9])/$\1/g;s/([0-9])\$/\1\$/g')"
  rg -o '([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])([\x{0100}-\x{FFFF}])' \
    -r "$rg_r_arg"
}

# Permutate 3-5 unicode characters.
rg-perm-345u() {
  tee >(rg-perm-3u) >(rg-perm-4u) >(rg-perm-5u) >/dev/null
}

# Permutate 3-5 unicode characters.
rg-perm-56789u-to-3456u() {
  tee \
    >(rg-perm-5u) \
    >(rg-perm-5u-to-3u) >(rg-perm-5u-to-4u) \
    >(rg-perm-6u-to-3u) >(rg-perm-6u-to-4u) \
    >(rg-perm-7u-to-3u) >(rg-perm-7u-to-4u) \
    >(rg-perm-8u-to-3u) >(rg-perm-8u-to-4u) \
    >(rg-perm-9u-to-3u) >(rg-perm-9u-to-4u) \
    >(rg-perm-9u-to-5u) >(rg-perm-9u-to-6u) \
    >/dev/null
}