UnicodeProperty: Unicode Properties
In rebus.unicode: Unicode Extensions for the 'rebus' Package

up_alphabetic

R Documentation

Unicode Properties

Description

Match a Unicode Property.

Usage

up_alphabetic(lo, hi, char_class = TRUE)

up_ascii_hex_digit(lo, hi, char_class = TRUE)

up_bidi_control(lo, hi, char_class = TRUE)

up_bidi_mirrored(lo, hi, char_class = TRUE)

up_case_ignorable(lo, hi, char_class = TRUE)

up_case_sensitive(lo, hi, char_class = TRUE)

up_cased(lo, hi, char_class = TRUE)

up_changes_when_casefolded(lo, hi, char_class = TRUE)

up_changes_when_casemapped(lo, hi, char_class = TRUE)

up_changes_when_lowercased(lo, hi, char_class = TRUE)

up_changes_when_nfkc_casefolded(lo, hi, char_class = TRUE)

up_changes_when_titlecased(lo, hi, char_class = TRUE)

up_changes_when_uppercased(lo, hi, char_class = TRUE)

up_dash(lo, hi, char_class = TRUE)

up_default_ignorable_code_point(lo, hi, char_class = TRUE)

up_deprecated(lo, hi, char_class = TRUE)

up_diacritic(lo, hi, char_class = TRUE)

up_extender(lo, hi, char_class = TRUE)

up_hex_digit(lo, hi, char_class = TRUE)

up_hyphen(lo, hi, char_class = TRUE)

up_id_continue(lo, hi, char_class = TRUE)

up_id_start(lo, hi, char_class = TRUE)

up_ideographic(lo, hi, char_class = TRUE)

up_lowercase(lo, hi, char_class = TRUE)

up_math(lo, hi, char_class = TRUE)

up_noncharacter_code_point(lo, hi, char_class = TRUE)

up_posix_alnum(lo, hi, char_class = TRUE)

up_posix_blank(lo, hi, char_class = TRUE)

up_posix_graph(lo, hi, char_class = TRUE)

up_posix_print(lo, hi, char_class = TRUE)

up_posix_xdigit(lo, hi, char_class = TRUE)

up_quotation_mark(lo, hi, char_class = TRUE)

up_soft_dotted(lo, hi, char_class = TRUE)

up_terminal_punctuation(lo, hi, char_class = TRUE)

up_uppercase(lo, hi, char_class = TRUE)

up_white_space(lo, hi, char_class = TRUE)

UP_ALPHABETIC

UP_ASCII_HEX_DIGIT

UP_BIDI_CONTROL

UP_BIDI_MIRRORED

UP_DASH

UP_DEFAULT_IGNORABLE_CODE_POINT

UP_DEPRECATED

UP_DIACRITIC

UP_EXTENDER

UP_HEX_DIGIT

UP_HYPHEN

UP_ID_CONTINUE

UP_ID_START

UP_IDEOGRAPHIC

UP_LOWERCASE

UP_MATH

UP_NONCHARACTER_CODE_POINT

UP_QUOTATION_MARK

UP_SOFT_DOTTED

UP_TERMINAL_PUNCTUATION

UP_UPPERCASE

UP_WHITE_SPACE

UP_CASE_SENSITIVE

UP_POSIX_ALNUM

UP_POSIX_BLANK

UP_POSIX_GRAPH

UP_POSIX_PRINT

UP_POSIX_XDIGIT

UP_CASED

UP_CASE_IGNORABLE

UP_CHANGES_WHEN_LOWERCASED

UP_CHANGES_WHEN_UPPERCASED

UP_CHANGES_WHEN_TITLECASED

UP_CHANGES_WHEN_CASEFOLDED

UP_CHANGES_WHEN_CASEMAPPED

UP_CHANGES_WHEN_NFKC_CASEFOLDED

Arguments

`lo`	A non-negative integer. Minimum number of repeats, when grouped.
`hi`	positive integer. Maximum number of repeats, when grouped.
`char_class`	`TRUE` or `FALSE`. Should the values be wrapped into a character class?

Format

An object of class regex (inherits from character) of length 1.

Value

A character vector representing part or all of a regular expression.

References

Table 12 of the Unicode Standard Annex #44 defines the Unicode General Categories. http://www.unicode.org/reports/tr44/

You can see which characters are contained in a category by visiting, e.g., http://www.fileformat.info/info/unicode/category/Nd/list.htm

Examples

# Classes
up_math()
up_posix_alnum()
up_changes_when_uppercased()
up_diacritic()

# With repetition
ugc_nonspacing_mark(3, 6)
up_quotation_mark(1, Inf)
up_posix_xdigit(0, Inf)

# Without a class wrapper
up_hyphen(char_class = FALSE)

# Constants
UP_ALPHABETIC
UP_DASH
UP_POSIX_ALNUM
UP_CHANGES_WHEN_LOWERCASED

## Not run: 
# All the Unicode properties.
# Not run, since it generates lots of output
ls("package:rebus.unicode", pattern = "^up")

## End(Not run)

# Usage
# Hello in Samoan, Serbian, Persian, Simplified Chinese
hello <- "t\u101lofa, \u437\u434\u440\u430\u432\u43e, \u633\u644\u627\u645, \u4f60\u597d"
stringi::stri_extract_all_regex(hello, up_alphabetic(1, Inf))
stringi::stri_extract_all_regex(hello, up_case_sensitive(1, Inf))

rebus.unicode documentation built on Nov. 5, 2025, 6:29 p.m.