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<p><strong>pprint-newline</strong> <span><i>Function</i></span></p>
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<p><strong>Syntax:</strong></p>
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<p><span><b>pprint-newline</b></span> <em>kind</em> &optional <em>stream →</em> <span><b>nil</b></span></p>
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<p><strong>Arguments and Values:</strong></p>
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<p><em>kind</em>—one of <!-- -->:linear<!-- -->, <!-- -->:fill<!-- -->, <!-- -->:miser<!-- -->, or <!-- -->:mandatory<!-- -->.</p>
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<p><span><i>stream</i></span>—a <span><i>stream designator</i></span> . The default is <span><i>standard output</i></span>.</p>
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<p><strong>Description:</strong></p>
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<p>If <span><i>stream</i></span> is a <span><i>pretty printing stream</i></span> and the <span><i>value</i></span> of <span><b>*print-pretty*</b></span> is <span><i>true</i></span>, a line break is inserted in the output when the appropriate condition below is satisfied; otherwise, <span><b>pprint-newline</b></span> has no effect.</p>
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<p><em>Kind</em> specifies the style of conditional newline. This <span><i>parameter</i></span> is treated as follows:</p>
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<span><b>pprint-newline</b></span>
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<p>:linear</p>
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<p>This specifies a “linear-style” <span><i>conditional newline</i></span>. A line break is inserted if and only if the immediately containing <span><i>section</i></span> cannot be printed on one line. The effect of this is that line breaks are either inserted at every linear-style conditional newline in a logical block or at none of them.</p>
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<p>:miser</p>
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<p>This specifies a “miser-style” <span><i>conditional newline</i></span>. A line break is inserted if and only if the immediately containing <span><i>section</i></span> cannot be printed on one line and miser style is in effect in the immediately containing logical block. The effect of this is that miser-style conditional newlines act like linear-style conditional newlines, but only when miser style is in effect. Miser style is in effect for a logical block if and only if the starting position of the logical block is less than or equal to <span><b>*print-miser-width*</b></span> <span><i>ems</i></span> from the right margin.</p>
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<p>:fill</p>
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<p>This specifies a “fill-style” <span><i>conditional newline</i></span>. A line break is inserted if and only if either (a) the following <span><i>section</i></span> cannot be printed on the end of the current line, (b) the preceding <span><i>section</i></span> was not printed on a single line, or (c) the immediately containing <span><i>section</i></span> cannot be printed on one line and miser style is in effect in the immediately containing logical block. If a logical block is broken up into a number of subsections by fill-style conditional newlines, the basic effect is that the logical block is printed with as many subsections as possible on each line. However, if miser style is in effect, fill-style conditional newlines act like linear-style conditional newlines.</p>
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<p>:mandatory</p>
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<p>This specifies a “mandatory-style” <span><i>conditional newline</i></span>. A line break is always inserted. This implies that none of the containing <span><i>sections</i></span> can be printed on a single line and will therefore trigger the insertion of line breaks at linear-style conditional newlines in these <span><i>sections</i></span>.</p>
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<p>When a line break is inserted by any type of conditional newline, any blanks that immediately precede the conditional newline are omitted from the output and indentation is introduced at the beginning of the next line. By default, the indentation causes the following line to begin in the same horizontal position as the first character in the immediately containing logical block. (The indentation can be changed via <span><b>pprint-indent</b></span>.)</p>
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<p>There are a variety of ways unconditional newlines can be introduced into the output (<em>i.e.</em>, via <span><b>terpri</b></span> or by printing a string containing a newline character). As with mandatory conditional newlines, this prevents any of the containing <span><i>sections</i></span> from being printed on one line. In general, when an unconditional newline is encountered, it is printed out without suppression of the preceding blanks and without any indentation following it. However, if a per-line prefix has been specified (see <span><b>pprint-logical-block</b></span>), this prefix will always be printed no matter how a newline originates.</p>
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<p><strong>Examples:</strong></p>
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<div class="language-lisp codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-lisp codeBlock_bY9V thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">See Section 22.2.2 </span><span class="token punctuation" style="color:#393A34">(</span><span class="token car">Examples</span><span class="token plain"> of using the Pretty Printer</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain">. </span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
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<p><strong>Side Effects:</strong></p>
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<p>Output to <span><i>stream</i></span>.</p>
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<p><strong>Affected By:</strong></p>
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<p><span><b>*print-pretty*</b></span>, <strong>*print-miser*</strong>. The presence of containing logical blocks. The placement of newlines and conditional newlines.</p>
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<p><strong>Exceptional Situations:</strong></p>
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<p>An error of <span><i>type</i></span> <span><b>type-error</b></span> is signaled if <em>kind</em> is not one of <!-- -->:linear<!-- -->, <!-- -->:fill<!-- -->, <!-- -->:miser<!-- -->, or <!-- -->:mandatory<!-- -->.</p>
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<p><strong>See Also:</strong></p>
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<p>Section 22.3.5.1 (Tilde Underscore: Conditional Newline), Section 22.2.2 (Examples of using the Pretty Printer)</p>
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<h2 class="anchor anchorWithStickyNavbar_LWe7" id="expanded-reference-pprint-newline">Expanded Reference: pprint-newline<a href="pprint-newline_function.html#expanded-reference-pprint-newline" class="hash-link" aria-label="Direct link to Expanded Reference: pprint-newline" title="Direct link to Expanded Reference: pprint-newline"></a></h2>
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<div class="theme-admonition theme-admonition-tip admonition_xJq3 alert alert--success"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</div><div class="admonitionContent_BuS1"><p>TODO: Please contribute to this page by adding explanations and examples</p></div></div>
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<div class="language-lisp codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-lisp codeBlock_bY9V thin-scrollbar" style="color:#393A34;background-color:#f6f8fa"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">(</span><span class="token car">pprint-newline</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/lisp-docs/cl-language-reference/tree/main/docs/chap-22/cc-e-dictionary/pprint-newline_function.md" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"><span class="theme-last-updated">Last updated<!-- --> by <b>daninus14</b></span></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="pprint-logical-block_macro.html"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">pprint-logical-block</div></a><a class="pagination-nav__link pagination-nav__link--next" href="pprint-pop_local-macro.html"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">pprint-pop</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="pprint-newline_function.html#expanded-reference-pprint-newline" class="table-of-contents__link toc-highlight">Expanded Reference: pprint-newline</a></li></ul></div></div></div></div></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Docs</div><ul class="footer__items clean-list"><li class="footer__item"><a href="../../../docs/tutorial.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Common Lisp Tutorial</a></li><li class="footer__item"><a href="../../index.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Common Lisp Technical Reference</a></li><li class="footer__item"><a href="../../../docs/help.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Help</a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://stackoverflow.com/questions/tagged/common-lisp" target="_blank" rel="noopener noreferrer" class="footer__link-item">Stack Overflow<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li class="footer__item"><a href="https:/
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