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Generally, an escape character is not a particular case of (device) control characters, nor vice versa.If we define control characters as non-graphic, or as having a special meaning for an output device (e.g. printer or text terminal) then any escape character for this device is a control one.
A Unicode character is assigned a unique Name (na). [1] The name is composed of uppercase letters A–Z, digits 0–9, hyphen-minus and space.Some sequences are excluded: names beginning with a space or hyphen, names ending with a space or hyphen, repeated spaces or hyphens, and space after hyphen are not allowed.
Name Common view Common key combinationsfor Microsoft Word, LibreOffice, OpenOffice.org (from 3.0) Key combination in other word processors Windows Alt Key Codes [5] Unicode name
Latin Small Letter U: U+0076 v Latin Small Letter V: U+0077 w Latin Small Letter W: U+0078 x Latin Small Letter X: U+0079 y Latin Small Letter Y: U+007A z Latin Small Letter Z: ASCII punctuation and symbols U+007B { Left Curly Bracket: U+007C | Vertical bar: U+007D } Right Curly Bracket: U+007E ~ Tilde: Control character U+007F ␡ Delete: DEL
Specifically, they used ASCII code 27 10 (escape), followed by a series of characters called a "control sequence" or "escape sequence". The mechanism was invented by Bob Bemer , the father of ASCII. For example, the sequence of code 27 10 , followed by the printable characters "[2;10H", would cause a Digital Equipment Corporation VT100 terminal ...
More generally, an equation E=F between regular-expression terms with variables holds if, and only if, its instantiation with different variables replaced by different symbol constants holds. [30] [31] Every regular expression can be written solely in terms of the Kleene star and set unions over finite words. This is a surprisingly difficult ...
Extreme examples occur when these are combined – Uniform Naming Convention paths begin with \\, and thus an escaped regular expression matching a UNC name begins with 8 backslashes, "\\\\\", due to needing to escape the string and the regular expression. Using raw strings reduces this to 4 (escaping in the regular expression), as in C# @"\\\\".
Latin Capital letter U: 0054 U+0056 V 86 0126 Latin Capital letter V: 0055 U+0057 W 87 0127 Latin Capital letter W: 0056 U+0058 X 88 0130 Latin Capital letter X: 0057 U+0059 Y 89 0131 Latin Capital letter Y: 0058 U+005A Z 90 0132 Latin Capital letter Z: 0059 ASCII Punctuation & Symbols: U+005B [ 91 0133 Left square bracket: 0060 U+005C \ 92 ...