parse_selector: Parse a CSS3-like selector

In r-lib/cli: Helpers for Developing Command Line Interfaces

Parse a CSS3-like selector

Description

This is the rather small subset of CSS3 that is supported:

Usage

parse_selector(x)

Arguments

x	CSS3-like selector string.

Details

Selectors:

• Type selectors, e.g. input selects all ⁠<input>⁠ elements.

• Class selectors, e.g. .index selects any element that has a class of "index".

• ID selector. ⁠#toc⁠ will match the element that has the ID "toc".

Combinators:

• Descendant combinator, i.e. the space, that combinator selects nodes that are descendants of the first element. E.g. ⁠div span⁠ will match all ⁠<span>⁠ elements that are inside a ⁠<div>⁠ element.

r-lib/cli documentation built on April 30, 2024, 8:13 p.m.