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Glifo para U+FFFC
Fuente: Noto Sans

U+FFFC Object Replacement Character

U+FFFC was added in Unicode version 2.1 in 1998. It belongs to the block U+FFF0 para U+FFFF Specials in the U+0000 para U+FFFF Basic Multilingual Plane.

This character is a Otro símbolo and is commonly used, that is, in no specific script.

The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. Depending on the context U+FFFC offers a line break opportunity at its position.

The Object Replacement Character is used as placeholder in situations, where some object should sit, that cannot be represented in plain text. For example, if you copy a text snippet with an embedded image from a web page to a text editor like Notepad or Vim, the clipboard might choose to replace the image with U+FFFC in the text content.

El Wikipedia tiene la siguiente información acerca de este punto de código:

Specials is a short Unicode block of characters allocated at the very end of the Basic Multilingual Plane, at U+FFF0–FFFF. Of these 16 code points, five have been assigned since Unicode 3.0:

  • U+FFF9 INTERLINEAR ANNOTATION ANCHOR, marks start of annotated text
  • U+FFFA INTERLINEAR ANNOTATION SEPARATOR, marks start of annotating character(s)
  • U+FFFB INTERLINEAR ANNOTATION TERMINATOR, marks end of annotation block
  • U+FFFC OBJECT REPLACEMENT CHARACTER, placeholder in the text for another unspecified object, for example in a compound document.
  • U+FFFD REPLACEMENT CHARACTER used to replace an unknown, unrecognised, or unrepresentable character
  • U+FFFE <noncharacter-FFFE> not a character.
  • U+FFFF <noncharacter-FFFF> not a character.

U+FFFE <noncharacter-FFFE> and U+FFFF <noncharacter-FFFF> are noncharacters, meaning they are reserved but do not cause ill-formed Unicode text. Versions of the Unicode standard from 3.1.0 to 6.3.0 claimed that these characters should never be interchanged, leading some applications to use them to guess text encoding by interpreting the presence of either as a sign that the text is not Unicode. However, Corrigendum #9 later specified that noncharacters are not illegal and so this method of checking text encoding is incorrect.

Unicode's U+FEFF BYTE ORDER MARK character can be inserted at the beginning of a Unicode text to signal its endianness: a program reading such a text and encountering 0xFFFE would then know that it should switch the byte order for all the following characters.

Its block name in Unicode 1.0 was Special.

Representaciones

Sistema Representación
N.º 65532
UTF-8 EF BF BC
UTF-16 FF FC
UTF-32 00 00 FF FC
URL-Quoted %EF%BF%BC
HTML hex reference &#xFFFC;
Mojibake mal de windows-1252 

Otros sitios

Registro completo

Propiedad Valor
Antigüedad (age) 2.1 (1998)
Nombre Unicode (na) OBJECT REPLACEMENT CHARACTER
Nombre Unicode 1 (na1)
Block (blk) Specials
Categoría general (gc) Otro símbolo
Script (sc) Common
Categoría de bidireccionalidad (bc) Other Neutral
Combining Class (ccc) Not Reordered
Tipo de descomposición (dt) none
Decomposition Mapping (dm) Glifo para U+FFFC Object Replacement Character
Minúscula (Lower)
Simple Lowercase Mapping (slc) Glifo para U+FFFC Object Replacement Character
Lowercase Mapping (lc) Glifo para U+FFFC Object Replacement Character
Mayúscula (Upper)
Simple Uppercase Mapping (suc) Glifo para U+FFFC Object Replacement Character
Uppercase Mapping (uc) Glifo para U+FFFC Object Replacement Character
Simple Titlecase Mapping (stc) Glifo para U+FFFC Object Replacement Character
Titlecase Mapping (tc) Glifo para U+FFFC Object Replacement Character
Case Folding (cf) Glifo para U+FFFC Object Replacement Character
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Exclusión de descomposición (CE)
Case Ignorable (CI)
Changes When Casefolded (CWCF)
Changes When Casemapped (CWCM)
Changes When NFKC Casefolded (CWKCF)
Changes When Lowercased (CWL)
Changes When Titlecased (CWT)
Changes When Uppercased (CWU)
Cased (Cased)
Exclusión de composición completa (Comp_Ex)
Default Ignorable Code Point (DI)
Raya (Dash)
Deprecated (Dep)
Diacrítico (Dia)
Base de modificador de emoyi (EBase)
Componente de emoyi (EComp)
Modificador de emoyi (EMod)
Presentación de emoyi (EPres)
Emoyi (Emoji)
Extender (Ext)
Extended Pictographic (ExtPict)
FC NFKC Closure (FC_NFKC) Glifo para U+FFFC Object Replacement Character
Grapheme Cluster Break (GCB) Any
Base de grafema (Gr_Base)
Extensión de grafema (Gr_Ext)
Enlace de grafema (Gr_Link)
Hex Digit (Hex)
Guion (Hyphen)
ID Continue (IDC)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
IDSU (IDSU) 0
ID_Compat_Math_Continue (ID_Compat_Math_Continue) 0
ID_Compat_Math_Start (ID_Compat_Math_Start) 0
Ideographic (Ideo)
InCB (InCB) None
Indic Mantra Category (InMC)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
Jamo Short Name (JSN)
Join Control (Join_C)
Logical Order Exception (LOE)
Math (Math)
Noncharacter Code Point (NChar)
NFC Quick Check (NFC_QC)
NFD Quick Check (NFD_QC)
NFKC Casefold (NFKC_CF) Glifo para U+FFFC Object Replacement Character
NFKC Quick Check (NFKC_QC)
NFKC_SCF (NFKC_SCF) Glifo para U+FFFC Object Replacement Character
NFKD Quick Check (NFKD_QC)
Other Alphabetic (OAlpha)
Other Default Ignorable Code Point (ODI)
Otra extensión de grafema (OGr_Ext)
Other ID Continue (OIDC)
Other ID Start (OIDS)
Other Lowercase (OLower)
Other Math (OMath)
Other Uppercase (OUpper)
Prepended Concatenation Mark (PCM)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Comilla (QMark)
Indicador regional (RI)
Radical (Radical)
Salto de oración (SB) Other
Soft Dotted (SD)
Sentence Terminal (STerm)
Terminal Punctuation (Term)
Ideograma unificado (UIdeo)
Selector de variación (VS)
Salto de palabra (WB) Other
Espacio en blanco (WSpace)
XID Continue (XIDC)
XID Start (XIDS)
Expands On NFC (XO_NFC)
Expands On NFD (XO_NFD)
Expands On NFKC (XO_NFKC)
Expands On NFKD (XO_NFKD)
Bidi Paired Bracket (bpb) Glifo para U+FFFC Object Replacement Character
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) neutral
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Joining Type (jt) Non Joining
Line Break (lb) Contingent Break Opportunity
Numeric Type (nt) none
Valor numérico (nv) not a number
Simple Case Folding (scf) Glifo para U+FFFC Object Replacement Character
Script Extension (scx)
Orientación vertical (vo) U