A B C D E F G H I J K L M N O P Q R S T U V W Y Z misc
regex-package | Create a regex |
ADDITIONAL_ARROWS | Unicode groups |
additional_arrows | Unicode groups |
AEGEAN_NUMBERS | Unicode groups |
aegean_numbers | Unicode groups |
ALCHEMICAL_SYMBOLS | Unicode groups |
alchemical_symbols | Unicode groups |
ALNUM | Class Constants |
alnum | Class Groups |
ALPHA | Class Constants |
alpha | Class Groups |
ALPHABETIC_PRESENTATION_FORMS | Unicode groups |
alphabetic_presentation_forms | Unicode groups |
AM_PM | Date-time regexes |
Anchors | The start or end of a string. |
ANCIENT_GREEK_MUSICAL_NOTATION | Unicode groups |
ancient_greek_musical_notation | Unicode groups |
ANCIENT_GREEK_NUMBERS | Unicode groups |
ancient_greek_numbers | Unicode groups |
ANCIENT_SYMBOLS | Unicode groups |
ancient_symbols | Unicode groups |
ANY_CHAR | Class Constants |
any_char | Class Groups |
ARABIC | Unicode groups |
arabic | Unicode groups |
ARABIC_EXTENDED_A | Unicode groups |
arabic_extended_a | Unicode groups |
ARABIC_MATHEMATICAL_ALPHANUMERIC_SYMBOLS | Unicode groups |
arabic_mathematical_alphanumeric_symbols | Unicode groups |
ARABIC_PRESENTATION_FORMS_A | Unicode groups |
arabic_presentation_forms_a | Unicode groups |
ARABIC_PRESENTATION_FORMS_B | Unicode groups |
arabic_presentation_forms_b | Unicode groups |
ARABIC_SUPPLEMENT | Unicode groups |
arabic_supplement | Unicode groups |
ARMENIAN | Unicode groups |
armenian | Unicode groups |
ARMENIAN_LIGATURES | Unicode groups |
armenian_ligatures | Unicode groups |
as.perl_regex | Convert or test for regex objects |
as.regex | Convert or test for regex objects |
ASCII_ALNUM | Class Constants |
ascii_alnum | Class Groups |
ASCII_ALPHA | Class Constants |
ascii_alpha | Class Groups |
ASCII_DIGIT | Class Constants |
ascii_digit | Class Groups |
ASCII_LOWER | Class Constants |
ascii_lower | Class Groups |
ASCII_UPPER | Class Constants |
ascii_upper | Class Groups |
AVESTAN | Unicode groups |
avestan | Unicode groups |
Backreferences | Backreferences |
BACKSLASH | Special characters |
BALINESE | Unicode groups |
balinese | Unicode groups |
BAMUN | Unicode groups |
bamun | Unicode groups |
BAMUN_SUPPLEMENT | Unicode groups |
bamun_supplement | Unicode groups |
BASSA_VAH | Unicode groups |
bassa_vah | Unicode groups |
BATAK | Unicode groups |
batak | Unicode groups |
BENGALI_AND_ASSAMESE | Unicode groups |
bengali_and_assamese | Unicode groups |
BLANK | Class Constants |
blank | Class Groups |
BLOCK_ELEMENTS | Unicode groups |
block_elements | Unicode groups |
BOPOMOFO | Unicode groups |
bopomofo | Unicode groups |
BOPOMOFO_EXTENDED | Unicode groups |
bopomofo_extended | Unicode groups |
BOUNDARY | Word boundaries |
BOX_DRAWING | Unicode groups |
box_drawing | Unicode groups |
BRAHMI | Unicode groups |
brahmi | Unicode groups |
BRAILLE_PATTERNS | Unicode groups |
braille_patterns | Unicode groups |
BUGINESE | Unicode groups |
buginese | Unicode groups |
BUHID | Unicode groups |
buhid | Unicode groups |
BYZANTINE_MUSICAL_SYMBOLS | Unicode groups |
byzantine_musical_symbols | Unicode groups |
DateTime | Date-time regexes |
datetime | Date-time regexes |
DAY | Date-time regexes |
DAY_OF_YEAR | Date-time regexes |
DAY_SINGLE | Date-time regexes |
DESERET | Unicode groups |
deseret | Unicode groups |
DEVANAGARI | Unicode groups |
devanagari | Unicode groups |
DEVANAGARI_EXTENDED | Unicode groups |
devanagari_extended | Unicode groups |
DGT | Class Constants |
dgt | Class Groups |
DIGIT | Class Constants |
digit | Class Groups |
DINGBATS | Unicode groups |
dingbats | Unicode groups |
DMY | Date-time regexes |
DOLLAR | Special characters |
DOMINO_TILES | Unicode groups |
domino_tiles | Unicode groups |
DOT | Special characters |
DTSEP | Date-time regexes |
DUPLOYAN | Unicode groups |
duployan | Unicode groups |
DYM | Date-time regexes |
EGYPTIAN_HIEROGLYPHS | Unicode groups |
egyptian_hieroglyphs | Unicode groups |
ELBASAN | Unicode groups |
elbasan | Unicode groups |
EMOTICONS | Unicode groups |
emoticons | Unicode groups |
ENCLOSED_ALPHANUMERICS | Unicode groups |
enclosed_alphanumerics | Unicode groups |
ENCLOSED_ALPHANUMERIC_SUPPLEMENT | Unicode groups |
enclosed_alphanumeric_supplement | Unicode groups |
ENCLOSED_CJK_LETTERS_AND_MONTHS | Unicode groups |
enclosed_cjk_letters_and_months | Unicode groups |
ENCLOSED_IDEOGRAPHIC_SUPPLEMENT | Unicode groups |
enclosed_ideographic_supplement | Unicode groups |
END | The start or end of a string. |
escape_special | Escape special characters |
ETHIOPIC | Unicode groups |
ethiopic | Unicode groups |
ETHIOPIC_EXTENDED | Unicode groups |
ethiopic_extended | Unicode groups |
ETHIOPIC_EXTENDED_A | Unicode groups |
ethiopic_extended_a | Unicode groups |
ETHIOPIC_SUPPLEMENT | Unicode groups |
ethiopic_supplement | Unicode groups |
exactly | Make a regex exact |
FLOORS_AND_CEILINGS | Unicode groups |
floors_and_ceilings | Unicode groups |
format.perl_regex | Create a regex |
format.regex | Print or format regex objects |
FRACTIONAL_SECOND | Date-time regexes |
FULLWIDTH_ASCII_DIGITS | Unicode groups |
fullwidth_ascii_digits | Unicode groups |
FULLWIDTH_ASCII_PUNCTUATION | Unicode groups |
fullwidth_ascii_punctuation | Unicode groups |
GENERAL_PUNCTUATION | Unicode groups |
general_punctuation | Unicode groups |
GEOMETRIC_SHAPES | Unicode groups |
geometric_shapes | Unicode groups |
GEOMETRIC_SHAPES_EXTENDED | Unicode groups |
geometric_shapes_extended | Unicode groups |
GEORGIAN | Unicode groups |
georgian | Unicode groups |
GEORGIAN_SUPPLEMENT | Unicode groups |
georgian_supplement | Unicode groups |
get_months | Get the days of the week |
get_weekdays | Get the days of the week |
GLAGOLITIC | Unicode groups |
glagolitic | Unicode groups |
GOTHIC | Unicode groups |
gothic | Unicode groups |
GRANTHA | Unicode groups |
grantha | Unicode groups |
GRAPH | Class Constants |
graph | Class Groups |
GREEK_AND_COPTIC | Unicode groups |
greek_and_coptic | Unicode groups |
GREEK_EXTENDED | Unicode groups |
greek_extended | Unicode groups |
group | Capture a token, or not |
GUJARATI | Unicode groups |
gujarati | Unicode groups |
GURMUKHI | Unicode groups |
gurmukhi | Unicode groups |
HALFWIDTH_AND_FULLWIDTH_FORMS | Unicode groups |
halfwidth_and_fullwidth_forms | Unicode groups |
HANGUL_COMPATIBILITY_JAMO | Unicode groups |
hangul_compatibility_jamo | Unicode groups |
HANGUL_JAMO | Unicode groups |
hangul_jamo | Unicode groups |
HANGUL_JAMO_EXTENDED_A | Unicode groups |
hangul_jamo_extended_a | Unicode groups |
HANGUL_JAMO_EXTENDED_B | Unicode groups |
hangul_jamo_extended_b | Unicode groups |
HANGUL_SYLLABLES | Unicode groups |
hangul_syllables | Unicode groups |
HANUNOO | Unicode groups |
hanunoo | Unicode groups |
HEBREW | Unicode groups |
hebrew | Unicode groups |
HEX_DIGIT | Class Constants |
hex_digit | Class Groups |
HIRAGANA | Unicode groups |
hiragana | Unicode groups |
HM | Date-time regexes |
HMS | Date-time regexes |
HOUR12 | Date-time regexes |
HOUR12_SINGLE | Date-time regexes |
HOUR24 | Date-time regexes |
HOUR24_SINGLE | Date-time regexes |
IMPERIAL_ARAMAIC | Unicode groups |
imperial_aramaic | Unicode groups |
INVISIBLE_OPERATORS | Unicode groups |
invisible_operators | Unicode groups |
IPA_EXTENSIONS | Unicode groups |
ipa_extensions | Unicode groups |
is.perl_regex | Convert or test for regex objects |
is.regex | Convert or test for regex objects |
ISO_DATE | Date-time regexes |
iso_date | Class Groups |
ISO_DATETIME | Date-time regexes |
iso_datetime | Class Groups |
ISO_TIME | Date-time regexes |
iso_time | Class Groups |
JAPANESE_CHESS | Unicode groups |
japanese_chess | Unicode groups |
JAVANESE | Unicode groups |
javanese | Unicode groups |
KAITHI | Unicode groups |
kaithi | Unicode groups |
KANA_SUPPLEMENT | Unicode groups |
kana_supplement | Unicode groups |
KANBUN | Unicode groups |
kanbun | Unicode groups |
KANGXI_RADICALS | Unicode groups |
kangxi_radicals | Unicode groups |
KANGXI_RADICALS_SUPPLEMENT | Unicode groups |
kangxi_radicals_supplement | Unicode groups |
KANNADA | Unicode groups |
kannada | Unicode groups |
KATAKANA | Unicode groups |
katakana | Unicode groups |
KATAKANA_PHONETIC_EXTENSIONS | Unicode groups |
katakana_phonetic_extensions | Unicode groups |
KAYAH_LI | Unicode groups |
kayah_li | Unicode groups |
KHAROSHTHI | Unicode groups |
kharoshthi | Unicode groups |
KHMER | Unicode groups |
khmer | Unicode groups |
KHMER_SYMBOLS | Unicode groups |
khmer_symbols | Unicode groups |
KHOJKI | Unicode groups |
khojki | Unicode groups |
KHUDAWADI | Unicode groups |
khudawadi | Unicode groups |
LAO | Unicode groups |
lao | Unicode groups |
LATIN | Unicode groups |
latin | Unicode groups |
LATIN_1_PUNCTUATION | Unicode groups |
latin_1_punctuation | Unicode groups |
LATIN_1_SUPPLEMENT | Unicode groups |
latin_1_supplement | Unicode groups |
LATIN_EXTENDED_A | Unicode groups |
latin_extended_a | Unicode groups |
LATIN_EXTENDED_ADDITIONAL | Unicode groups |
latin_extended_additional | Unicode groups |
LATIN_EXTENDED_B | Unicode groups |
latin_extended_b | Unicode groups |
LATIN_EXTENDED_C | Unicode groups |
latin_extended_c | Unicode groups |
LATIN_EXTENDED_D | Unicode groups |
latin_extended_d | Unicode groups |
LATIN_EXTENDED_E | Unicode groups |
latin_extended_e | Unicode groups |
LATIN_LIGATURES | Unicode groups |
latin_ligatures | Unicode groups |
lazy | Repeat values |
LEPCHA | Unicode groups |
lepcha | Unicode groups |
LETTERLIKE_SYMBOLS | Unicode groups |
letterlike_symbols | Unicode groups |
LIMBU | Unicode groups |
limbu | Unicode groups |
LINEAR_A | Unicode groups |
linear_a | Unicode groups |
LINEAR_B_IDEOGRAMS | Unicode groups |
linear_b_ideograms | Unicode groups |
LINEAR_B_SYLLABARY | Unicode groups |
linear_b_syllabary | Unicode groups |
LISU | Unicode groups |
lisu | Unicode groups |
literal | Treat part of a regular expression literally. |
lookahead | Lookaround |
lookbehind | Lookaround |
LOWER | Class Constants |
lower | Class Groups |
LYCIAN | Unicode groups |
lycian | Unicode groups |
LYDIAN | Unicode groups |
lydian | Unicode groups |
MAHAJANI | Unicode groups |
mahajani | Unicode groups |
MAHJONG_TILES | Unicode groups |
mahjong_tiles | Unicode groups |
MALAYALAM | Unicode groups |
malayalam | Unicode groups |
MANDAIC | Unicode groups |
mandaic | Unicode groups |
MANICHAEAN | Unicode groups |
manichaean | Unicode groups |
MATHEMATICAL_ALPHANUMERIC_SYMBOLS | Unicode groups |
mathematical_alphanumeric_symbols | Unicode groups |
MATH_ARROWS | Unicode groups |
math_arrows | Unicode groups |
MDY | Date-time regexes |
MEETEI_MAYEK | Unicode groups |
meetei_mayek | Unicode groups |
MEETEI_MAYEK_EXTENSIONS | Unicode groups |
meetei_mayek_extensions | Unicode groups |
MENDE_KIKAKUI | Unicode groups |
mende_kikakui | Unicode groups |
MEROITIC_CURSIVE | Unicode groups |
meroitic_cursive | Unicode groups |
MEROITIC_HIEROGLYPHS | Unicode groups |
meroitic_hieroglyphs | Unicode groups |
MIAO | Unicode groups |
miao | Unicode groups |
MINUTE | Date-time regexes |
MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A | Unicode groups |
miscellaneous_mathematical_symbols_a | Unicode groups |
MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B | Unicode groups |
miscellaneous_mathematical_symbols_b | Unicode groups |
MISCELLANEOUS_SYMBOLS_AND_PICTOGRAPHS | Unicode groups |
miscellaneous_symbols_and_pictographs | Unicode groups |
MISCELLANEOUS_TECHNICAL | Unicode groups |
miscellaneous_technical | Unicode groups |
MODI | Unicode groups |
modi | Unicode groups |
MODIFIER_TONE_LETTERS | Unicode groups |
modifier_tone_letters | Unicode groups |
MONGOLIAN | Unicode groups |
mongolian | Unicode groups |
MONTH | Date-time regexes |
MRO | Unicode groups |
mro | Unicode groups |
MS | Date-time regexes |
MUSICAL_SYMBOLS | Unicode groups |
musical_symbols | Unicode groups |
MYANMAR | Unicode groups |
myanmar | Unicode groups |
MYANMAR_EXTENDED_A | Unicode groups |
myanmar_extended_a | Unicode groups |
MYANMAR_EXTENDED_B | Unicode groups |
myanmar_extended_b | Unicode groups |
MYD | Date-time regexes |
NABATAEAN | Unicode groups |
nabataean | Unicode groups |
negated_char_class | A range or char_class of characters. |
negate_and_group | A range or char_class of characters. |
negative_lookahead | Lookaround |
negative_lookbehind | Lookaround |
NEW_TAI_LUE | Unicode groups |
new_tai_lue | Unicode groups |
NKO | Unicode groups |
nko | Unicode groups |
NOT_BOUNDARY | Word boundaries |
NOT_DGT | Class Constants |
not_dgt | Class Groups |
NOT_SPC | Class Constants |
not_spc | Class Groups |
NOT_WRD | Class Constants |
not_wrd | Class Groups |
NUMBER_FORMS | Unicode groups |
number_forms | Unicode groups |
number_range | Generate a regular expression for a number range. |
OGHAM | Unicode groups |
ogham | Unicode groups |
OLD_ITALIC | Unicode groups |
old_italic | Unicode groups |
OLD_NORTH_ARABIAN | Unicode groups |
old_north_arabian | Unicode groups |
OLD_PERMIC | Unicode groups |
old_permic | Unicode groups |
OLD_PERSIAN | Unicode groups |
old_persian | Unicode groups |
OLD_SOUTH_ARABIAN | Unicode groups |
old_south_arabian | Unicode groups |
OLD_TURKIC | Unicode groups |
old_turkic | Unicode groups |
OL_CHIKI | Unicode groups |
ol_chiki | Unicode groups |
one_or_more | Repeat values |
OPEN_BRACE | Special characters |
OPEN_BRACKET | Special characters |
OPEN_PAREN | Special characters |
OPTICAL_CHARACTER_RECOGNITION | Unicode groups |
optical_character_recognition | Unicode groups |
optional | Repeat values |
or | Alternation |
or1 | Alternation |
ORIYA | Unicode groups |
oriya | Unicode groups |
ORNAMENTAL_DINGBATS | Unicode groups |
ornamental_dingbats | Unicode groups |
OSMANYA | Unicode groups |
osmanya | Unicode groups |
PAHAWH_HMONG | Unicode groups |
pahawh_hmong | Unicode groups |
PAHLAVI_INSCRIPTIONAL | Unicode groups |
pahlavi_inscriptional | Unicode groups |
PAHLAVI_PSALTER | Unicode groups |
pahlavi_psalter | Unicode groups |
PALMYRENE | Unicode groups |
palmyrene | Unicode groups |
PAU_CIN_HAU | Unicode groups |
pau_cin_hau | Unicode groups |
perl_regex | Create a regex |
PHAGS_PA | Unicode groups |
phags_pa | Unicode groups |
PHAISTOS_DISC | Unicode groups |
phaistos_disc | Unicode groups |
PHOENICIAN | Unicode groups |
phoenician | Unicode groups |
PHONETIC_EXTENSIONS | Unicode groups |
phonetic_extensions | Unicode groups |
PHONETIC_EXTENSIONS_SUPPLEMENT | Unicode groups |
phonetic_extensions_supplement | Unicode groups |
PIPE | Special characters |
PLAYING_CARDS | Unicode groups |
playing_cards | Unicode groups |
PLUS | Special characters |
Class Constants | |
print.regex | Print or format regex objects |
printable | Class Groups |
PRIVATE_USE_AREA | Unicode groups |
private_use_area | Unicode groups |
PUNCT | Class Constants |
punct | Class Groups |
QUESTION | Special characters |
recursive | Make the regular expression recursive. |
recycle | Recycle arguments |
REF1 | Backreferences |
REF2 | Backreferences |
REF3 | Backreferences |
REF4 | Backreferences |
REF5 | Backreferences |
REF6 | Backreferences |
REF7 | Backreferences |
REF8 | Backreferences |
REF9 | Backreferences |
regex | Create a regex |
REJANG | Unicode groups |
rejang | Unicode groups |
repeated | Repeat values |
repeat_in_class | Engine for grouping and repeating classes |
ROMAN | Class Constants |
roman | Class Groups |
RUMI_NUMERAL_SYMBOLS | Unicode groups |
rumi_numeral_symbols | Unicode groups |
RUNIC | Unicode groups |
runic | Unicode groups |
SAMARITAN | Unicode groups |
samaritan | Unicode groups |
SAURASHTRA | Unicode groups |
saurashtra | Unicode groups |
SECOND | Date-time regexes |
SHARADA | Unicode groups |
sharada | Unicode groups |
SHAVIAN | Unicode groups |
shavian | Unicode groups |
SHORTHAND_FORMAT_CONTROLS | Unicode groups |
shorthand_format_controls | Unicode groups |
SIDDHAM | Unicode groups |
siddham | Unicode groups |
SINHALA | Unicode groups |
sinhala | Unicode groups |
SINHALA_ARCHAIC_NUMBERS | Unicode groups |
sinhala_archaic_numbers | Unicode groups |
SMALL_FORM_VARIANTS | Unicode groups |
small_form_variants | Unicode groups |
SORA_SOMPENG | Unicode groups |
sora_sompeng | Unicode groups |
SPACE | Class Constants |
space | Class Groups |
SPACING_MODIFIER_LETTERS | Unicode groups |
spacing_modifier_letters | Unicode groups |
SPC | Class Constants |
spc | Class Groups |
SpecialCharacters | Special characters |
SPECIALS | Unicode groups |
specials | Unicode groups |
STAR | Special characters |
START | The start or end of a string. |
SUNDANESE | Unicode groups |
sundanese | Unicode groups |
SUNDANESE_SUPPLEMENT | Unicode groups |
sundanese_supplement | Unicode groups |
SUPERSCRIPTS_AND_SUBSCRIPTS | Unicode groups |
superscripts_and_subscripts | Unicode groups |
SUPPLEMENTAL_ARROWS_A | Unicode groups |
supplemental_arrows_a | Unicode groups |
SUPPLEMENTAL_MATHEMATICAL_OPERATORS | Unicode groups |
supplemental_mathematical_operators | Unicode groups |
SUPPLEMENTAL_PUNCTUATION | Unicode groups |
supplemental_punctuation | Unicode groups |
SUPPLEMENTARY_PRIVATE_USE_AREA_A | Unicode groups |
supplementary_private_use_area_a | Unicode groups |
SUPPLEMENTARY_PRIVATE_USE_AREA_B | Unicode groups |
supplementary_private_use_area_b | Unicode groups |
SYLOTI_NAGRI | Unicode groups |
syloti_nagri | Unicode groups |
SYRIAC | Unicode groups |
syriac | Unicode groups |
TAGALOG | Unicode groups |
tagalog | Unicode groups |
TAGBANWA | Unicode groups |
tagbanwa | Unicode groups |
TAGS | Unicode groups |
tags | Unicode groups |
TAI_LE | Unicode groups |
tai_le | Unicode groups |
TAI_THAM | Unicode groups |
tai_tham | Unicode groups |
TAI_VIET | Unicode groups |
tai_viet | Unicode groups |
TAI_XUAN_JING_SYMBOLS | Unicode groups |
tai_xuan_jing_symbols | Unicode groups |
TAKRI | Unicode groups |
takri | Unicode groups |
TAMIL | Unicode groups |
tamil | Unicode groups |
TELUGU | Unicode groups |
telugu | Unicode groups |
THAANA | Unicode groups |
thaana | Unicode groups |
THAI | Unicode groups |
thai | Unicode groups |
TIBETAN | Unicode groups |
tibetan | Unicode groups |
TIFINAGH | Unicode groups |
tifinagh | Unicode groups |
TIMEZONE | Date-time regexes |
TIMEZONE_OFFSET | Date-time regexes |
TIRHUTA | Unicode groups |
tirhuta | Unicode groups |
token | Capture a token, or not |
TRANSPORT_AND_MAP_SYMBOLS | Unicode groups |
transport_and_map_symbols | Unicode groups |
UGARITIC | Unicode groups |
ugaritic | Unicode groups |
Unicode | Unicode groups |
UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS | Unicode groups |
unified_canadian_aboriginal_syllabics | Unicode groups |
UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS_EXTENDED | Unicode groups |
unified_canadian_aboriginal_syllabics_extended | Unicode groups |
UNMATCHABLE | Class Constants |
UPPER | Class Constants |
upper | Class Groups |
VAI | Unicode groups |
vai | Unicode groups |
VARIATION_SELECTORS | Unicode groups |
variation_selectors | Unicode groups |
VARIATION_SELECTORS_SUPPLEMENT | Unicode groups |
variation_selectors_supplement | Unicode groups |
VEDIC_EXTENSIONS | Unicode groups |
vedic_extensions | Unicode groups |
VERTICAL_FORMS | Unicode groups |
vertical_forms | Unicode groups |
WARANG_CITI | Unicode groups |
warang_citi | Unicode groups |
WEEKDAY0 | Date-time regexes |
WEEKDAY1 | Date-time regexes |
WEEK_OF_YEAR | Date-time regexes |
WordBoundaries | Word boundaries |
WRD | Class Constants |
wrd | Class Groups |
YDM | Date-time regexes |
YEAR | Date-time regexes |
YEAR2 | Date-time regexes |
YEAR4 | Date-time regexes |
YIJING_HEXAGRAM_SYMBOLS | Unicode groups |
yijing_hexagram_symbols | Unicode groups |
YIJING_MONO_DI_AND_TRIGRAMS | Unicode groups |
yijing_mono_di_and_trigrams | Unicode groups |
YI_RADICALS | Unicode groups |
yi_radicals | Unicode groups |
YI_SYLLABLES | Unicode groups |
yi_syllables | Unicode groups |
YMD | Date-time regexes |
zero_or_more | Repeat values |
%c% | Combine strings together |
%R% | Combine strings together |
%|% | Alternation |