Cloconut onlyfans

Ascii escape sequences are a pattern of in-band signaling for driving cursor location, color, font style, and other parameters on video text terminals and terminal emulators. Certain byte sequences are embedded in the text, most often beginning with an ascii escape character and a bracket character. The terminal interprets these sequences as commands rather than text to be displayed verbatim.

The ansi sequences were introduced in the 1970s to replace vendor-developed sequences and became widespread in the computer hardware market by the early 1980s. Although hardware text terminals are increasingly rare in the current reality, the relevance of the ansi standard remains, as the vast majority of terminal emulators and command consoles interpret at least one of these sequences. The hazeltine 1500 terminal had a similar function, which was invoked using the characters ~, dc1, and at the end of the x and y positions separated by a comma. Although these pair of terminals had identical functionality, different control sequences had to be used to call them.

Because these sequences were different for any terminal, special libraries such as termcap ("terminal capabilities") and utilities like tput had to be created so that programs could use the same api to work with any terminal.Plus, some terminals required numbers (e.G. Rows and columns) to be passed like binary character values; for some languages, programs had to use the same api. The first standard in the series was ecma-48, adopted in 1976.[1] it was a development of a series of character encoding standards, the 1st of which was ecma-6 of 1965, a 7-bit standard if the origins of iso 646. The name "ansi control sequence" appeared in 1979, when ansi adopted the ansi x3.64 standard. The ansi x3l2 committee collaborated with the ecma tc 1 committee and produced virtually identical standards. The two standards were merged into the world standard iso 6429.[1] in 1994, ansi abandoned its standard in the sense of an international standard.

The first popular video terminal to support these sequences was the digital vt100, introduced in 1978.[2] this dress was very successful in the trade, causing many clones of the vt100 to appear, one of the mostdemanding first and most famous of which was the considerably low-cost zenith z-19 in 1979. [3] among others were qume qvt-108, televideo tvi-970, wyse wy-99gt, and the optional "vt100", "vt103" or "ansi" modes with varying degrees of compatibility on many other brands. The popularity of these modes has gradually led to the fact that any greater number of programs, https://x-video.tube especially bulletin board systems and any other online services) have come to believe that control sequences work, leading virtually all new terminals and emulator programs to support them.

In 1981, ansi x3.64 was picked up for use by the american government in the publication fips 86. Later, the govt. Of america stopped duplicating industry standards and the fips pub. 86 was withdrawn.[4]

Ecma-48 has been updated several times and now has a 5th edition dating back to 1991. Bk is also adopted by iso and iec in the role of iso/iec 6429 standard.[5] one version is adopted as the japanese industry standard jis x 0211.

Companion standards include itu t.61, teletex standard, and iso/iec 8613, an open architecture documentation standard exclusively iso/iec 8613-6 or itu t.416). These two systems shared many codes with the ansi system, as well as extensions that don't always make sense for computer terminals. Both systems are promptly out of use, but ecma-48 marks the extensions used in them as reserved.

Platform support[edit]

Unix-like systems[edit]

In these systems, the terminal (or emulator) is self-identified using an environment variable. An information base library, such as termcap or terminfo, searches to determine the terminal's capabilities and the specific control sequences to use these offerings, which may differ from ansi in the early stages.

Although such libraries were developed primarily for unix, by the mid-1980s programs functioning on unix-like operating systems could most often assume that they were using a terminal or emulator that supported ansi sequences;[citation needed] this leads to a free, unix-like operating system. Many programs, including text editors like vi and gnu emacs, use termcap or terminfo, or use libraries like curses that practice termcap or terminfo, and thus theoretically support non ansi terminals, but this is so rarely tested at this time that they probably won't work with such terminals.[Citation needed]

Terminal emulators for playing with local programs, and remote machines and text system consoles for the most part support ansi escape codes. This includes terminal emulators such as xterm, rxvt, gnome terminal and konsole on x11 or wayland-based windows systems, and terminal.App and third-party terminal emulators such as iterm2 on macos.

Cp/m[edit]

Cp/m[edit]

Machines based on cp/m varied, and there were several competing terminals, as well as for printers, each with our own control sequences. Some early systems were headless (did not require an external terminal), and personal computers with their own screen usually emulated a terminal. Application developers had to support a variety of popular terminals and provide the program hardware to configure them. Although there was a hardware abstraction layer (bios) cp/m, even for the same microprocessor, manufacturers produced platform-specific versions due to competing disk formats that were also pre-configured for your" terminal (for example, different adaptations of wordstar for a particular machine were derived).

The headless altair 8800 was usually connected to a teletype machine. Its cp/m had a configio command for adapting external terminals or running local applications issuing other control codes. External terminals such as the soroc iq 120/140 and hazeltine 1500/1510 were supported.[13][14]

Dos, os/2 and vindows[edit]

Ms-dos 1.X did not support ansi or various other control sequences. Practically five to ten control characters (bel, cr, lf, bs) were interpreted by the base bios, making it almost impossible to run any full-screen applications. Any display effects could be accomplished using bios calls, which were deliberately slow, or by direct manipulation of the ibm pc hardware.

In dos 2.0, it was possible to add a fixture driver for ansi control sequences - the de facto standard is ansi.Sys, but others such as ansi.Com,[15] nansi.Sys[16] and ansiplus.Exe (which are noticeably faster because they bypass the bios) are also used. Because of the slowness and the fact that the holder was not installed by default, programs rarely took advantage of it; instead, applications continued to directly manipulate the hardware to get the desired text display.[Citation needed] ansi.Sys and such drivers continued to get work in windows 9x all the way to windows me, as well as in nt-derived systems for 16-bit legacy programs running under ntvdm.

Many dos clones could interpret sequences and thus did not require a separate ansi driver to be loaded. Pts-dos[17][18] and also concurrent dos, multiuser dos[19] and real/32 had built-in support (plus a number of extensions). Os/2 had an ansi command that enabled these sequences.

The windows console did not support ansi sequences, and microsoft did not provide any methods for enabling them. Some replacements or additions to the windows console, like tcc by jp software (formerly 4nt), ansi.Com by michael j. Mefford, ansicon by jason hood,[20] and conemu by maximus5, interpreted the ansi control sequences output by programs. A python package called colorama [21] internally interprets the ansi control sequences in the output, translating them into win32 calls for that terminal state to make it easier to port python code that uses ansi to vindex. Cygwin performs a similar translation for all console input given cygwin file descriptors, filtered by cygwin1.Dll output functions, allowing posix c code to be ported to windows.

Microsoft recently issued windows 10 update version 1511, where it unexpectedly implemented support for ansi control sequences, more than two decades after the promulgation of windows nt.[22] this remained done along with windows subsystem for linux, making it possible for unix-like terminal software to apply such sequences in the windows console. This feature is disabled by default, however, in windows powershell 5.1 it appeared to be enabled. In powershell 6, there is a chance to embed the required esc character in a string using `e.[23]

Windows terminal, available last year, supports sequences by default, and microsoft intends to replace windows console with windows terminal.[24]

Atari st/tt/falcon series[edit]

Atari tos used a command system adapted from the vt52 with a number of extensions to maintain color,[25] but did not support ansi escape codes.

Amigaos[edit]

Amigaos not only interprets ansi code sequences to get rid of text to the monitor, the amigaos printer driver also interprets them with extensions specific to amigaos) and translates them into the codes needed for your printer that is actually connected.[26]

Vms / openvms[edit]

Vms was designed to be controlled via text-based digital video terminals like the aforementioned vt100; so the software will usually write ansi control sequences directly (and will not use non-ansi terminals).[27][failed check]

Description[edit]

C0 control codes[edit]

Almost all users assume that some single-byte characters have some function. Originally defined as an ascii section, the default c0 control code set is now provided in iso 6429 (ecma-48), which will make it part of the same standard as the c1 set called by ansi control sequences (although iso 2022 makes it possible to have an iso 6429 c0 set without an iso 6429 c1 set, provided 0x1b is very esc). This serves to reduce the amount of information transmitted, or to perform some functions not available to escape sequences:

Escape sequences differ in length. A common format for ansi-compatible escape sequence is defined in ansi x3.41 (equivalent to ecma-35 or iso/iec 2022).[28]:13.1 escape sequences consist of only bytes at power 0x20-0x7f (all ascii noncontrol characters), and are capable of being parsed without forward reading. The behavior when a control character, a byte with a set high bit, or a byte that is not part of any valid sequence is encountered before the finish is undefined.

Fe escape sequences[edit]

If esc is followed by a byte of power 0x40 to 0x5f, the control sequence is of type fe. Its interpretation is assigned to the corresponding c1 control code standard.[28]:13.2.1 accordingly, all control sequences corresponding to c1 control codes from ansi x3.64 / ecma-48 have a similar format.[5.5.3.A

The standard states that in eight-bit environments the control functions corresponding to control sequences of type fe (from the c1 control code set) come in like individual bytes in the range 0x80-0x9f.[Five.5.3.B this is possible in character encodings that conform to the provisions for the iso 2022 8-bit code, such as the iso 8859 series. Nevertheless, in encodings used on different devices, such as utf-eight or cp-1252, these codes are often used for different purposes, so only the 2-byte sequence is usually used. And utf-8 representation of the c1 control code through the c1 controls and latin-1 supplements block leads to the next 2-byte code (e.G. 0xc2,0x8e for u 008e), but space is not saved in this way.

Csi (control sequence introducer)[edit]

For control sequence introducer, or csi commands, the esc [ (written as \e[ or \033[ in some programming languages and plots) command is followed by any number (including none) of "parameter bytes" from 0x30-0x3f (ascii 0-9:;?), Followed by an unlimited number of "intermediate bytes" in the range 0x20-0x2f (ascii space and !"#%).