Spacing Mark Value in Grapheme Cluster Break Unicode Property

Unicode Version 18.0

Spacing Mark is a value that classifies certain combining characters, such as vowels or diacritics in scripts like Thai or Devanagari, which take up horizontal space on their own rather than being placed over or under a base character. These marks are treated as extending the grapheme cluster, meaning they attach to the preceding base character without starting a new cluster, yet they still occupy a visual width in the rendered text. This distinction matters for line breaking, cursor movement, and text selection, because a spacing mark does not break a cluster but also does not behave like a non-spacing mark, which is typically zero-width and purely overlay. In practice, spacing marks ensure that sequences like a base consonant followed by a vowel remain indivisible for editing operations, while still allowing the renderer to advance the cursor by the mark’s full character width.

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Devanagari Sign Visarga

Devanagari Vowel Sign Ooe

Devanagari Vowel Sign Aa

Devanagari Vowel Sign I

Devanagari Vowel Sign Ii

Devanagari Vowel Sign Candra O

Devanagari Vowel Sign Short O

Devanagari Vowel Sign O

Devanagari Vowel Sign Au

Devanagari Vowel Sign Prishthamatra E

Devanagari Vowel Sign Aw

Bengali Sign Anusvara

Bengali Sign Visarga

Bengali Vowel Sign I

Bengali Vowel Sign Ii

Bengali Vowel Sign E

Bengali Vowel Sign Ai

Bengali Vowel Sign O

Bengali Vowel Sign Au

Gurmukhi Sign Visarga

Gurmukhi Vowel Sign Aa

Gurmukhi Vowel Sign I

Gurmukhi Vowel Sign Ii

Gujarati Sign Visarga

Gujarati Vowel Sign Aa

Gujarati Vowel Sign I

Gujarati Vowel Sign Ii

Gujarati Vowel Sign Candra O

Gujarati Vowel Sign O

Gujarati Vowel Sign Au

Oriya Sign Anusvara

Oriya Sign Visarga

Oriya Vowel Sign Ii

Oriya Vowel Sign E

Oriya Vowel Sign Ai

Oriya Vowel Sign O

Oriya Vowel Sign Au

Tamil Vowel Sign I

Tamil Vowel Sign U

Tamil Vowel Sign Uu

Tamil Vowel Sign E

Tamil Vowel Sign Ee

Tamil Vowel Sign Ai

Tamil Vowel Sign O

Tamil Vowel Sign Oo

Tamil Vowel Sign Au

Telugu Sign Candrabindu

Telugu Sign Anusvara

Telugu Sign Visarga

Telugu Vowel Sign U

Telugu Vowel Sign Uu

Telugu Vowel Sign Vocalic R

Telugu Vowel Sign Vocalic Rr

Kannada Sign Anusvara

Kannada Sign Visarga

Kannada Vowel Sign Aa

Kannada Vowel Sign U

Kannada Vowel Sign Vocalic R

Kannada Vowel Sign Vocalic Rr

Kannada Sign Combining Anusvara Above Right

Malayalam Sign Anusvara

Malayalam Sign Visarga

Malayalam Vowel Sign I

Malayalam Vowel Sign Ii

Malayalam Vowel Sign E

Malayalam Vowel Sign Ee

Malayalam Vowel Sign Ai

Malayalam Vowel Sign O

Malayalam Vowel Sign Oo

Malayalam Vowel Sign Au

Sinhala Sign Anusvaraya

Sinhala Sign Visargaya

Sinhala Vowel Sign Ketti Aeda-Pilla

Sinhala Vowel Sign Diga Aeda-Pilla

Sinhala Vowel Sign Gaetta-Pilla

Sinhala Vowel Sign Kombuva

Sinhala Vowel Sign Diga Kombuva

Sinhala Vowel Sign Kombu Deka

Sinhala Vowel Sign Kombuva Haa Aela-Pilla

Sinhala Vowel Sign Kombuva Haa Diga Aela-Pilla

Sinhala Vowel Sign Kombuva Haa Gayanukitta

Sinhala Vowel Sign Diga Gaetta-Pilla

Sinhala Vowel Sign Diga Gayanukitta

Thai Character Sara Am

Lao Vowel Sign Am

Tibetan Sign Yar Tshes

Tibetan Sign Mar Tshes

Tibetan Sign Rnam Bcad

Myanmar Vowel Sign E

Myanmar Consonant Sign Medial Ya

Myanmar Consonant Sign Medial Ra

Myanmar Vowel Sign Vocalic R

Myanmar Vowel Sign Vocalic Rr

Myanmar Vowel Sign Shan E

Khmer Vowel Sign Aa

Khmer Vowel Sign Oe

Khmer Vowel Sign Ya

Khmer Vowel Sign Ie

Khmer Vowel Sign E

Khmer Vowel Sign Ae

Khmer Vowel Sign Ai

Khmer Vowel Sign Oo

Khmer Vowel Sign Au

Khmer Sign Reahmuk

Khmer Sign Yuukaleapintu

Limbu Vowel Sign Ee

Limbu Vowel Sign Ai

Limbu Vowel Sign Oo

Limbu Vowel Sign Au

Limbu Subjoined Letter Ya

Limbu Subjoined Letter Ra

Limbu Subjoined Letter Wa

Limbu Small Letter Ka

Limbu Small Letter Nga

Limbu Small Letter Ta

Limbu Small Letter Na

Limbu Small Letter Pa

Limbu Small Letter Ma

Limbu Small Letter Ra

Limbu Small Letter La

Buginese Vowel Sign E

Buginese Vowel Sign O

Tai Tham Consonant Sign Medial Ra

Tai Tham Consonant Sign La Tang Lai

Tai Tham Vowel Sign Oy

Tai Tham Vowel Sign E

Tai Tham Vowel Sign Ae

Tai Tham Vowel Sign Oo

Tai Tham Vowel Sign Ai

Tai Tham Vowel Sign Tham Ai

Balinese Sign Bisah

Balinese Vowel Sign Taling

Balinese Vowel Sign Taling Repa

Balinese Vowel Sign Taling Tedung

Balinese Vowel Sign Taling Repa Tedung

Sundanese Sign Pangwisad

Sundanese Consonant Sign Pamingkal

Sundanese Vowel Sign Panaelaeng

Sundanese Vowel Sign Panolong

Batak Vowel Sign E

Batak Vowel Sign I

Batak Vowel Sign Karo I

Batak Vowel Sign O

Batak Vowel Sign U

Lepcha Subjoined Letter Ya

Lepcha Subjoined Letter Ra

Lepcha Vowel Sign Aa

Lepcha Vowel Sign I

Lepcha Vowel Sign O

Lepcha Vowel Sign Oo

Lepcha Vowel Sign U

Lepcha Vowel Sign Uu

Lepcha Consonant Sign Nyin-Do

Lepcha Consonant Sign Kang

Vedic Tone Atharvavedic Independent Svarita

Vedic Sign Atikrama

Syloti Nagri Vowel Sign A

Syloti Nagri Vowel Sign I

Syloti Nagri Vowel Sign Oo

Saurashtra Sign Anusvara

Saurashtra Sign Visarga

Saurashtra Consonant Sign Haaru

Saurashtra Vowel Sign Aa

Saurashtra Vowel Sign I

Saurashtra Vowel Sign Ii

Saurashtra Vowel Sign U

Saurashtra Vowel Sign Uu

Saurashtra Vowel Sign Vocalic R

Saurashtra Vowel Sign Vocalic Rr

Saurashtra Vowel Sign Vocalic L

Saurashtra Vowel Sign Vocalic Ll

Saurashtra Vowel Sign E

Saurashtra Vowel Sign Ee

Saurashtra Vowel Sign Ai

Saurashtra Vowel Sign O

Saurashtra Vowel Sign Oo

Saurashtra Vowel Sign Au

Rejang Consonant Sign H

Javanese Sign Wignyan

Javanese Vowel Sign Tarung

Javanese Vowel Sign Tolong

Javanese Vowel Sign Taling

Javanese Vowel Sign Dirga Mure

Javanese Consonant Sign Pengkal

Javanese Consonant Sign Cakra

Cham Vowel Sign O

Cham Vowel Sign Ai

Cham Consonant Sign Ya

Cham Consonant Sign Ra

Cham Consonant Sign Final H

Meetei Mayek Vowel Sign Ii

Meetei Mayek Vowel Sign Au

Meetei Mayek Vowel Sign Aau

Meetei Mayek Vowel Sign Visarga

Meetei Mayek Vowel Sign Onap

Meetei Mayek Vowel Sign Inap

Meetei Mayek Vowel Sign Yenap

Meetei Mayek Vowel Sign Sounap

Meetei Mayek Vowel Sign Cheinap

Meetei Mayek Vowel Sign Nung

Meetei Mayek Lum Iyek

Brahmi Sign Candrabindu

Brahmi Sign Visarga

Kaithi Sign Visarga

Kaithi Vowel Sign Aa

Kaithi Vowel Sign I

Kaithi Vowel Sign Ii

Kaithi Vowel Sign O

Kaithi Vowel Sign Au

Chakma Vowel Sign E

Chakma Vowel Sign Aa

Chakma Vowel Sign Ei

Sharada Sign Visarga

Sharada Vowel Sign Aa

Sharada Vowel Sign I

Sharada Vowel Sign Ii

Sharada Vowel Sign Au

Sharada Vowel Sign Prishthamatra E

Khojki Vowel Sign Aa

Khojki Vowel Sign I

Khojki Vowel Sign Ii

Khojki Vowel Sign O

Khojki Vowel Sign Au

Khudawadi Vowel Sign Aa

Khudawadi Vowel Sign I

Khudawadi Vowel Sign Ii

Grantha Sign Anusvara

Grantha Sign Visarga

Grantha Vowel Sign I

Grantha Vowel Sign U

Grantha Vowel Sign Uu

Grantha Vowel Sign Vocalic R

Grantha Vowel Sign Vocalic Rr

Grantha Vowel Sign Ee

Grantha Vowel Sign Ai

Grantha Vowel Sign Oo

Grantha Vowel Sign Au

Grantha Vowel Sign Vocalic L

Grantha Vowel Sign Vocalic Ll

Tulu-Tigalari Vowel Sign I

Tulu-Tigalari Vowel Sign Ii

Tulu-Tigalari Sign Candra Anunasika

Tulu-Tigalari Sign Anusvara

Tulu-Tigalari Sign Visarga

Newa Vowel Sign Aa

Newa Vowel Sign I

Newa Vowel Sign Ii

Newa Vowel Sign O

Newa Vowel Sign Au

Newa Sign Visarga

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