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The character repertoire for the text of an Ada program consists of the entire coding space described by the ISO/IEC 10646:2003 Universal Multiple−Octet Coded Character Set. This coding space is organized in planes, each plane comprising 65536 characters.
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A character is defined by this International Standard for each cell in the coding space described by ISO/IEC 10646:2003, regardless of whether or not ISO/IEC 10646:2003 allocates a character to that cell.
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The coded representation for characters is implementation defined (it need not be a representation defined within ISO/IEC 10646:2003). A character whose relative code position in its plane is 16#FFFE# or 16#FFFF# is not allowed anywhere in the text of a program.
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The semantics of an Ada program whose text is not in Normalization Form KC (as defined by section 24 of ISO/IEC 10646:2003) is implementation defined.
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The description of the language definition in this International Standard uses the character properties General Category, Simple Uppercase Mapping, Uppercase Mapping, and Special Case Condition of the documents referenced by the note in section 1 of ISO/IEC 10646:2003. The actual set of graphic symbols used by an implementation for the visual representation of the text of an Ada program is not specified. 6/2
Characters are categorized as follows:
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Any character whose General Category is defined to be "Letter, Uppercase".
Any character whose General Category is defined to be "Letter, Lowercase".
Any character whose General Category is defined to be "Letter, Titlecase".
Any character whose General Category is defined to be "Letter, Modifier".
Any character whose General Category is defined to be "Letter, Other".
Any character whose General Category is defined to be "Mark, Non−Spacing".
Any character whose General Category is defined to be "Mark, Spacing Combining".
Any character whose General Category is defined to be "Number, Decimal".
Any character whose General Category is defined to be "Number, Letter".
Any character whose General Category is defined to be "Punctuation, Connector".
Any character whose General Category is defined to be "Other, Format".
Any character whose General Category is defined to be "Separator, Space".
Any character whose General Category is defined to be "Separator, Line".
Any character whose General Category is defined to be "Separator, Paragraph".
The characters whose code positions are 16#09# (CHARACTER TABULATION), 16#0A# (LINE FEED), 16#0B# (LINE TABULATION), 16#0C# (FORM FEED), 16#0D# (CARRIAGE RETURN), 16#85# (NEXT LINE), and the characters in categories separator_line and separator_paragraph.
Any character whose General Category is defined to be "Other, Control", and which is not defined to be a format_effector.
Any character whose General Category is defined to be "Other, Private Use".
Any character whose General Category is defined to be "Other, Surrogate".
Any character that is not in the categories other_control, other_private_use, other_surrogate, format_effector, and whose relative code position in its plane is neither 16#FFFE# nor 16#FFFF#.
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The following names are used when referring to certain characters (the first name is that given in ISO/IEC 10646:2003):
graphic symbol | name | graphic symbol | name
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| |||
" | quotation mark | : | colon
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# | number sign | ; | semicolon
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& | ampersand | < | less−than sign
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' | apostrophe, tick | = | equals sign
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( | left parenthesis | > | greater−than sign
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) | right parenthesis | _ | low line, underline
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* | asterisk, multiply | | | vertical line
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+ | plus sign | / | solidus, divide
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, | comma | ! | exclamation point
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−− | hyphen−minus, minus | % | percent sign
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. | full stop, dot, point |
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NOTES
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1 The characters in categories other_control, other_private_use, and other_surrogate are only allowed in comments.
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2 The language does not specify the source representation of programs.