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In regular expressions, the caret is used to match the beginning of a string or line; if it begins a character class, then the inverse of the class is to be matched. ANSI C can transcribe the caret in the form of the trigraph??', as the character was originally not available in all character sets and keyboards.
Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script. For a far more comprehensive list of symbols and signs, see List of Unicode characters.
A metacharacter is a character that has a special meaning to a computer program, such as a shell interpreter or a regular expression (regex) engine.. In POSIX extended regular expressions, there are 14 metacharacters that must be escaped — preceded by a backslash (\) — in order to drop their special meaning and be treated literally inside an expression: opening and closing square brackets ...
A regex search scans the text of each page on Wikipedia in real time, character by character, to find pages that match a specific sequence or pattern of characters. Unlike keyword searching, regex searching is by default case-sensitive, does not ignore punctuation, and operates directly on the page source (MediaWiki markup) rather than on the ...
The GSTrans string processing API on the operating systems for the Acorn Atom and the BBC Micro, and on RISC OS for the Acorn Archimedes and later machines, use the vertical bar character | in place of the caret. For example, |M (pronounced "control em", the same as for the ^M notation) is the carriage return character, ASCII 13.
The caret symbol can be written just below the line of text for a punctuation mark at low line position, such as a comma, or just above the line of text as an inverted caret (U+02C7 ˇ CARON) for a character at a higher line position, such as an apostrophe, or in either position to indicate insertion of a letter, word or phrase; [3] the ...
THAI CHARACTER FONGMAN U+0E4F: Po, other Thai ๚ THAI CHARACTER ANGKHANKHU U+0E5A: Po, other Thai ๛ THAI CHARACTER KHOMUT U+0E5B: Po, other Thai ༄ TIBETAN MARK INITIAL YIG MGO MDUN MA U+0F04: Po, other Tibetan ༅ TIBETAN MARK CLOSING YIG MGO SGAB MA U+0F05: Po, other Tibetan ༆ TIBETAN MARK CARET YIG MGO PHUR SHAD MA U+0F06: Po, other ...
The HTML codes can be used where a literal character would cause confusion, such as using code "[" or "]" to show the left or right square bracket ('[' or ']'). Some editors, upon seeing a single bracket '[' at a word will edit a page to put double-bracket '[[' as thinking a single bracket must be an obvious typo, but an HTML code of ...