Grapheme Cluster Break - Extend

Unicode Version 18.0

Extend is a value that marks characters which continue an existing grapheme cluster without initiating a new one, such as combining marks, variation selectors, and zero-width joiners. When a text segmentation algorithm encounters an Extend character after a base character, it attaches it to that base, ensuring that sequences of diacritics or other modifiers remain part of a single user-perceived character. This prevents breaks between the base and its attached marks, so that editing, cursor movement, and line wrapping treat the entire cluster as one unit. Extend characters themselves never start a cluster, and they are typically invisible or spacing-neutral, though they may alter the visual appearance of the preceding base. The value also applies to certain emoji modifiers and tags, which must stay glued to their preceding emoji or sequence. By grouping such characters, Extend helps maintain linguistic and typographic integrity across different scripts and symbols.

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Combining Grave Accent

Combining Acute Accent

Combining Circumflex Accent

Combining Tilde

Combining Macron

Combining Overline

Combining Breve

Combining Dot Above

Combining Diaeresis

Combining Hook Above

Combining Ring Above

Combining Double Acute Accent

Combining Caron

Combining Vertical Line Above

Combining Double Vertical Line Above

Combining Double Grave Accent

Combining Candrabindu

Combining Inverted Breve

Combining Turned Comma Above

Combining Comma Above

Combining Reversed Comma Above

Combining Comma Above Right

Combining Grave Accent Below

Combining Acute Accent Below

Combining Left Tack Below

Combining Right Tack Below

Combining Left Angle Above

Combining Left Half Ring Below

Combining Up Tack Below

Combining down Tack Below

Combining Plus Sign Below

Combining Minus Sign Below

Combining Palatalized Hook Below

Combining Retroflex Hook Below

Combining Dot Below

Combining Diaeresis Below

Combining Ring Below

Combining Comma Below

Combining Cedilla

Combining Ogonek

Combining Vertical Line Below

Combining Bridge Below

Combining Inverted Double Arch Below

Combining Caron Below

Combining Circumflex Accent Below

Combining Breve Below

Combining Inverted Breve Below

Combining Tilde Below

Combining Macron Below

Combining Low Line

Combining Double Low Line

Combining Tilde Overlay

Combining Short Stroke Overlay

Combining Long Stroke Overlay

Combining Short Solidus Overlay

Combining Long Solidus Overlay

Combining Right Half Ring Below

Combining Inverted Bridge Below

Combining Square Below

Combining Seagull Below

Combining X Above

Combining Vertical Tilde

Combining Double Overline

Combining Grave Tone Mark

Combining Acute Tone Mark

Combining Greek Perispomeni

Combining Greek Koronis

Combining Greek Dialytika Tonos

Combining Greek Ypogegrammeni

Combining Bridge Above

Combining Equals Sign Below

Combining Double Vertical Line Below

Combining Left Angle Below

Combining Not Tilde Above

Combining Homothetic Above

Combining Almost Equal to Above

Combining Left Right Arrow Below

Combining Upwards Arrow Below

Combining Grapheme Joiner

Combining Right Arrowhead Above

Combining Left Half Ring Above

Combining Fermata

Combining X Below

Combining Left Arrowhead Below

Combining Right Arrowhead Below

Combining Right Arrowhead and Up Arrowhead Below

Combining Right Half Ring Above

Combining Dot Above Right

Combining Asterisk Below

Combining Double Ring Below

Combining Zigzag Above

Combining Double Breve Below

Combining Double Breve

Combining Double Macron

Combining Double Macron Below

Combining Double Tilde

Combining Double Inverted Breve

Combining Double Rightwards Arrow Below

Combining Latin Small Letter A

Combining Latin Small Letter E

Combining Latin Small Letter I

Combining Latin Small Letter O

Combining Latin Small Letter U

Combining Latin Small Letter C

Combining Latin Small Letter D

Combining Latin Small Letter H

Combining Latin Small Letter M

Combining Latin Small Letter R

Combining Latin Small Letter T

Combining Latin Small Letter V

Combining Latin Small Letter X

Combining Cyrillic Titlo

Combining Cyrillic Palatalization

Combining Cyrillic Dasia Pneumata

Combining Cyrillic Psili Pneumata

Combining Cyrillic Pokrytie

Combining Cyrillic Hundred Thousands Sign

Combining Cyrillic Millions Sign

Hebrew Accent Etnahta

Hebrew Accent Segol

Hebrew Accent Shalshelet

Hebrew Accent Zaqef Qatan

Hebrew Accent Zaqef Gadol

Hebrew Accent Tipeha

Hebrew Accent Revia

Hebrew Accent Zarqa

Hebrew Accent Pashta

Hebrew Accent Yetiv

Hebrew Accent Tevir

Hebrew Accent Geresh

Hebrew Accent Geresh Muqdam

Hebrew Accent Gershayim

Hebrew Accent Qarney Para

Hebrew Accent Telisha Gedola

Hebrew Accent Pazer

Hebrew Accent Atnah Hafukh

Hebrew Accent Munah

Hebrew Accent Mahapakh

Hebrew Accent Merkha

Hebrew Accent Merkha Kefula

Hebrew Accent Darga

Hebrew Accent Qadma

Hebrew Accent Telisha Qetana

Hebrew Accent Yerah Ben Yomo

Hebrew Accent Ole

Hebrew Accent Iluy

Hebrew Accent Dehi

Hebrew Accent Zinor

Hebrew Mark Masora Circle

Hebrew Point Sheva

Hebrew Point Hataf Segol

Hebrew Point Hataf Patah

Hebrew Point Hataf Qamats

Hebrew Point Hiriq

Hebrew Point Tsere

Hebrew Point Segol

Hebrew Point Patah

Hebrew Point Qamats

Hebrew Point Holam

Hebrew Point Holam Haser for Vav

Hebrew Point Qubuts

Hebrew Point Dagesh or Mapiq

Hebrew Point Meteg

Hebrew Point Rafe

Hebrew Point Shin Dot

Hebrew Point Sin Dot

Hebrew Mark Upper Dot

Hebrew Mark Lower Dot

Hebrew Point Qamats Qatan

Hebrew Point Sheva Na Mudgash

Hebrew Point Dagesh Hazaq Mudgash

Arabic Sign Sallallahou Alayhe Wassallam

Arabic Sign Alayhe Assallam

Arabic Sign Rahmatullah Alayhe

Arabic Sign Radi Allahou Anhu

Arabic Sign Takhallus

Arabic Small High Tah

Arabic Small High Ligature Alef with Lam with Yeh

Arabic Small High Zain

Arabic Small Fatha

Arabic Small Damma

Arabic Small Kasra

Arabic Fathatan

Arabic Dammatan

Arabic Kasratan

Arabic Maddah Above

Arabic Hamza Above

Arabic Hamza Below

Arabic Subscript Alef

Arabic Inverted Damma

Arabic Mark Noon Ghunna

Arabic Zwarakay

Arabic Vowel Sign Small V Above

Arabic Vowel Sign Inverted Small V Above

Arabic Vowel Sign Dot Below

Arabic Reversed Damma

Arabic Fatha with Two Dots

Arabic Wavy Hamza Below

Arabic Letter Superscript Alef

Arabic Small High Ligature Sad with Lam with Alef Maksura

Arabic Small High Ligature Qaf with Lam with Alef Maksura

Arabic Small High Meem Initial Form

Arabic Small High Lam Alef

Arabic Small High Jeem

Arabic Small High Three Dots

Arabic Small High Seen

Arabic Small High Rounded Zero

Arabic Small High Upright Rectangular Zero

Arabic Small High Dotless Head of Khah

Arabic Small High Meem Isolated Form

Arabic Small Low Seen

Arabic Small High Madda

Arabic Small High Yeh

Arabic Small High Noon

Arabic Empty Centre Low Stop

Arabic Empty Centre High Stop

Arabic Rounded High Stop with Filled Centre

Arabic Small Low Meem

Syriac Letter Superscript Alaph

Syriac Pthaha Above

Syriac Pthaha Below

Syriac Pthaha Dotted

Syriac Zqapha Above

Syriac Zqapha Below

Syriac Zqapha Dotted

Syriac Rbasa Above

Syriac Rbasa Below

Syriac Dotted Zlama Horizontal

Syriac Dotted Zlama Angular

Syriac Hbasa Above

Syriac Hbasa Below

Syriac Hbasa-Esasa Dotted

Syriac Esasa Above

Syriac Esasa Below

Syriac Feminine Dot

Syriac Qushshaya

Syriac Rukkakha

Syriac Two Vertical Dots Above

Syriac Two Vertical Dots Below

Syriac Three Dots Above

Syriac Three Dots Below

Syriac Oblique Line Above

Syriac Oblique Line Below

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