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77 lines
2.2 KiB
77 lines
2.2 KiB
////
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Included in:
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- user-manual: Listing and Source Code Blocks
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////
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Like literal blocks, the content in listing blocks is displayed exactly as you entered it.
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Listing block content is converted to `<pre>` text.
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The content in listing blocks is only subject to <<user-manual#special-characters,special character>> and callout substitutions.
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The `listing` block name can be applied to content two ways.
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. Set the `listing` attribute on the element.
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. Contain the content within a delimited listing block.
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The listing block name is applied to an element, such as a paragraph, by setting the `listing` attribute on that element.
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.Listing paragraph syntax
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[source]
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----
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include::ex-listing.adoc[tag=para]
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----
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.Result: Listing paragraph
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====
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include::ex-listing.adoc[tag=para]
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====
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A delimited listing block is surrounded by lines composed of four hyphens (`----`).
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.Delimited listing block syntax
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[source]
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....
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include::ex-listing.adoc[tag=bl]
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....
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Here's how the block above appears when rendered as HTML.
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.Result: Listing block
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====
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include::ex-listing.adoc[tag=bl]
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====
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You should notice a few things about how the content is processed.
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* the HTML tag `<pre>` is escaped
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* then endlines are preserved
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* the phrase _listing block_ is not italicized, despite having underscores around it.
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Listing blocks are good for displaying raw source code, especially when used in tandem with the `source` and `source-highlighter` attributes.
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The example below shows a listing block with `source` and the language `ruby` applied to its content.
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.Source block syntax
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[source]
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....
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include::ex-src.adoc[tag=src-base]
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....
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.Result: Listing block with the source attribute set
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====
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include::ex-src.adoc[tag=src-base]
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====
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Detailed instructions for using the source and source-highlighter attributes are provided in the <<user-manual#source-code-blocks,source code blocks>> section.
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[listing]
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.Listing block with custom substitutions syntax
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....
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include::ex-listing.adoc[tag=subs]
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....
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.Result: Listing block with custom substitutions applied
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====
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// the attribute value is hard-coded in this result since the example depends
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// on a hypothetical document attribute
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include::ex-listing.adoc[tag=subs-out]
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====
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