In epoxy: String Interpolation for Documents, Reports and Apps

rel_or_abs_url <- function(path) {
    rel_path <- knitr::opts_chunk$get("use_rel_path")
    if (is.null(rel_path)) rel_path <- FALSE
    paste0(
        if (rel_path)  "articles/",
        if (!rel_path) "https://pkg.garrickadenbuie.com/epoxy/articles/",
        path
    )
}

[epoxy-report]: r rel_or_abs_url("epoxy-report.html") [epoxy-script]: r rel_or_abs_url("epoxy-script.html") [epoxy-shiny]: r rel_or_abs_url("epoxy-shiny.html")

epoxy is super glue

[In R Markdown and Quarto reports][epoxy-report]

Use epoxy chunks for extra-strength inline syntax. Just library(epoxy) in your R Markdown or Quarto document to get started. All epoxy chunks make it easy to transform values in place with a {cli}-inspired inline syntax described in ?epoxy_transform_inline.

[In R scripts][epoxy-script]

The same functions that power epoxy chunks are availble in three flavors:

epoxy() for markdown and general purpose outputs
epoxy_html() for HTML outputs, with added support for HTML templating (see ?epoxy_transform_html)
epoxy_latex() for LaTeX reports

These functions are accompanied by a robust system for chained glue-transformers powered by epoxy_transform().

[In Shiny apps][epoxy-shiny]

ui_epoxy_html() makes it easy to update text or HTML dynamically, anywhere in your Shiny app's UI. For more complicated situations, ui_epoxy_mustache() lets you turn any Shiny UI into a template that leverages the Mustache templating language.