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The etags files consists of multiple sections—one section per input source file. Sections are plain-text with several non-printable ascii characters used for special purposes. These characters are represented as underlined hexadecimal codes below. A section starts with a two line header (the first two bytes make up a magic number):
It is almost never used for this purpose today. Various printable characters are used as visible "escape characters", depending on context. The substitute character was intended to request a translation of the next character from a printable character to another value, usually by setting bit 5 to zero. This is handy because some media (such as ...
Non-breaking space (°) is a space character that prevents an automatic line break at its position. Pilcrow (¶) is the symbolic representation of paragraphs. Line break (↵) breaks the current line without new paragraph. It puts lines of text close together. Tab character (→) is used to align text horizontally to the next tab stop.
A small vi clone with a minimum of commands and features. GPL-2.0-only: Elvis: The first vi clone and the default vi in Minix. ClArtistic: ex: Or is vi an ex-clone? ex was an extended version of ed. It got a full-screen visual interface, thereby becoming the vi text editor. Free software: Kakoune
The form feed character is sometimes used in plain text files of source code as a delimiter for a page break, or as marker for sections of code. Some editors, in particular emacs and vi, have built-in commands to page up/down on the form feed character. This convention is predominantly used in Lisp code, and is also seen in C and Python source ...
vi (pronounced as distinct letters, / ˌ v iː ˈ aɪ / ⓘ) [1] is a screen-oriented text editor originally created for the Unix operating system. The portable subset of the behavior of vi and programs based on it, and the ex editor language supported within these programs, is described by (and thus standardized by) the Single Unix Specification and POSIX.
The ASCII text-encoding standard uses 7 bits to encode characters. With this it is possible to encode 128 (i.e. 2 7) unique values (0–127) to represent the alphabetic, numeric, and punctuation characters commonly used in English, plus a selection of Control characters which do not represent printable characters.
Strings are recognized by looking for sequences of at least 4 (by default) printable characters terminating in a NUL character (that is, null-terminated strings). Some implementations provide options for determining what is recognized as a PPAP, which is useful for finding non-ASCII and wide character text.