U+F977 "亮" CJK Compatibility Ideograph-# Unicode Character

U+F977 "亮" CJK Compatibility Ideograph-# is a compatibility ideograph from the CJK Compatibility Ideographs block, which was encoded primarily to maintain round-trip compatibility with older East Asian character set standards like CNS 11643 or certain vendor-specific encodings. This particular character represents a variant form of the standard CJK Unified Ideograph "亮" (meaning bright or light), but it is visually distinct in some legacy representations and serves as a mapping point for systems that historically used a slightly different glyph shape. Unlike typical unified ideographs, U+F977 is not intended for general modern text and is often treated as a duplicate or alternate form, with its use discouraged in favor of the unified version in the main CJK block.

General Properties

Code Point	U+F977
Version Added	1.1
Name	CJK Compatibility Ideograph-#
Block	CJK Compatibility Ideographs
General Category	Other Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Canonical
Decomposition Mapping	"亮" U+4EAE CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding	亮
HTML Hex Encoding	亮
UTF-8 Encoding	0xEF 0xA5 0xB7
UTF-16 Encoding	0xF977
UTF-32 Encoding	0x0000F977
C/C++/Java Escape	\uf977

Unicode Properties

Full Composition Exclusion	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Ideographic
East Asian Width	Wide
Changes When NFKC Casefolded	Yes
NFKC Casefold	"亮" U+4EAE CJK Unified Ideograph-#
NFKC Simple Casefold	"亮" U+4EAE CJK Unified Ideograph-#
Script	Han
Script Extensions	Han
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Upright
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	OLetter
Ideographic	Yes

Unihan Properties

kCompatibilityVariant	U+4EAE
kDefinition	bright, brilliant, radiant, light
kHangul	양:0
kIRG_KSource	K0-6539
kKorean	YANG
kRSUnicode	8.7
kTotalStrokes	9