rust-analyzer/crates/ra_ide/test_data/highlight_injection.html

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<pre><code><span class="keyword">fn</span> <span class="function declaration">fixture</span>(<span class="variable declaration">ra_fixture</span>: &<span class="builtin_type">str</span>) {}

<span class="keyword">fn</span> <span class="function declaration">main</span>() {
    <span class="function">fixture</span>(<span class="string_literal">r#"</span>
        <span class="keyword">trait</span> <span class="trait declaration">Foo</span> {
            <span class="keyword">fn</span> <span class="function declaration">foo</span>() {
                <span class="macro">println!</span>(<span class="string_literal">"2 + 2 = {}"</span>, <span class="numeric_literal">4</span>);
            }
        }<span class="string_literal">"#</span>
    );
}</code></pre>