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To demonstrate the value of the escape sequence feature, to output the text Foo on one line and Bar on the next line, the code must output a newline between the two words. The following code achieves the goal via text formatting and a hard-coded ASCII character value for newline (0x0A). This behaves as desired with the words on sequential lines ...
The BIOS keyboard driver produced Backspace when the backspace key was typed and NUL with scan code 0x53 when the delete key was typed. [8] In Windows the delete key maps to VK_DELETE (0x2E). [ 9 ] EGA/VGA fonts , as fonts used by Win32 console , usually have the "house" symbol ⌂ at 127 (0x7F) code point, see Code page 437 for details.
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.
Code 127 (DEL, a.k.a. "rubout") is likewise a special case. Its 7-bit code is all-bits-on in binary, which essentially erased a character cell on a paper tape when overpunched. Paper tape was a common storage medium when ASCII was developed, with a computing history dating back to WWII code breaking equipment at Biuro Szyfrów. Paper tape ...
In C and many derivative programming languages, a string escape sequence is a series of two or more characters, starting with a backslash \. [3]Note that in C a backslash immediately followed by a newline does not constitute an escape sequence, but splices physical source lines into logical ones in the second translation phase, whereas string escape sequences are converted in the fifth ...
Initially defined as part of ASCII, the default C0 control code set is now defined in ISO 6429 (ECMA-48), making it part of the same standard as the C1 set invoked by the ANSI escape sequences (although ISO 2022 allows the ISO 6429 C0 set to be used without the ISO 6429 C1 set, and vice versa, provided that 0x1B is always ESC). This is used to ...
A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name. A numeric character reference uses the format &#nnnn; or &#xhhhh; where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form.
Alt+← Backspace or Search+← Backspace or Del: Delete word to the right of cursor Ctrl+Del ⌥ Opt+Del or ⌥ Opt+Fn+← Backspace. Ctrl+Del: Meta+d: dw (delete space too)or. de (keep space) Ctrl+Search+← Backspace: Delete word to the left of cursor Ctrl+← Backspace ⌥ Opt+← Backspace: Ctrl+← Backspace: Ctrl+← Backspace or. Meta+ ...