emoji_modifier_sequence := emoji_modifier_base emoji_modifier

emoji_combining_sequence :=

( emoji_character

| emoji_presentation_sequence

| text_presentation_sequence

) non_spacing_mark*

text_presentation_sequence := emoji_character text_variation_selector

emoji_presentation_sequence := emoji_character emoji_variation_selector

text_variation_selector := \x{FE0E}

emoji_variation_selector := \x{FE0F}

emoji_keycap_sequence := [0-9#*] emoji_variation_selector \x{20E3}

emoji_core_sequence := emoji_combining_sequence

| emoji_modifier_sequence

| emoji_flag_sequence

emoji_zwj_element := emoji_character

| emoji_presentation_sequence

| emoji_modifier_sequence

emoji_zwj_sequence := emoji_zwj_element ( ZWJ emoji_zwj_element )+

emoji_sequence := emoji_core_sequence

| emoji_zwj_sequence

| emoji_tag_sequence

emoji_flag_sequence := regional_indicator regional_indicator

emoji_tag_sequence := tag_base tag_spec tag_term

tag_base := emoji_character

| emoji_modifier_sequence

| emoji_presentation_sequence

tag_spec := [\x{E0020}-\x{E007E}]+

tag_term := \x{E007F}

emoji_character := \p{Emoji}

default_emoji_presentation_character := \p{Emoji_Presentation=Yes}

default_text_presentation_character := \p{Emoji & Emoji_Presentation=No}

emoji_modifier_base := [ \x{261D} \x{26F9} \x{270A}-\x{270D}

\x{1F385} \x{1F3C2}-\x{1F3C4} \x{1F3C7} \x{1F3CA}-\x{1F3CC}

\x{1F442}-\x{1F443} \x{1F446}-\x{1F450} \x{1F466}-\x{1F478} \x{1F47C}

\x{1F481}-\x{1F483} \x{1F485}-\x{1F487} \x{1F4AA}

\x{1F574}-\x{1F575} \x{1F57A} \x{1F590} \x{1F595}-\x{1F596}

\x{1F645}-\x{1F647} \x{1F64B}-\x{1F64F}

\x{1F6A3} \x{1F6B4}-\x{1F6B6} \x{1F6C0} \x{1F6CC}

\x{1F918}-\x{1F91E} \x{1F926} \x{1F930} \x{1F933}-\x{1F939} \x{1F93C}-\x{1F93E}

]

emoji_modifier := \p{Emoji_Modifier}