is_ansi_tty

We check that all of the following hold:<ul>
<li>The stream is a terminal.</li>
<li>The platform is Unix.</li>
<li>R is not running inside R.app (the macOS GUI).</li>
<li>R is not running inside RStudio.</li>
<li>R is not running inside Emacs.</li>
<li>The terminal is not "dumb".</li>
<li><code>stream</code> is either the standard output or the standard error stream.</li>
</ul>

A suite of tools to build attractive command line interfaces
('CLIs'), from semantic elements: headings, lists, alerts, paragraphs,
etc. Supports custom themes via a 'CSS'-like language. It also
contains a number of lower level 'CLI' elements: rules, boxes, trees,
and 'Unicode' symbols with 'ASCII' alternatives. It support ANSI
colors and text styles as well.

Gabor Csardi

Helpers for Developing Command Line Interfaces

Gábor Csárdi

Hadley Wickham

Kirill Müller

Salim Brüggemann

Posit Software, PBC 

is_ansi_tty function

<dl><dt>stream</dt>
<dd>The stream to inspect or manipulate, an R connection
object. It can also be a string, one of <code>"auto"</code>, <code>"message"</code>,
<code>"stdout"</code>, <code>"stderr"</code>. <code>"auto"</code> will select <code><a href="/link/stdout()?package=cli&version=3.6.2" data-mini-rdoc="cli::stdout()">stdout()</a></code> if the session is
interactive and there are no sinks, otherwise it will select <code><a href="/link/stderr()?package=cli&version=3.6.2" data-mini-rdoc="cli::stderr()">stderr()</a></code>.</dd></dl>

Arguments

Detect if a stream support ANSI escape characters — is_ansi_tty

<dl>

<dt>stream</dt>
<dd>The stream to inspect or manipulate, an R connection
object. It can also be a string, one of <code>"auto"</code>, <code>"message"</code>,
<code>"stdout"</code>, <code>"stderr"</code>. <code>"auto"</code> will select <code><a href='https://rdrr.io/r/base/showConnections.html'>stdout()</a></code> if the session is
interactive and there are no sinks, otherwise it will select <code><a href='https://rdrr.io/r/base/showConnections.html'>stderr()</a></code>.</dd>

</dl>

is_ansi_tty: Detect if a stream support ANSI escape characters

Description

Usage

Value

Arguments

See Also

Examples