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<h2 id="layout-posttitle-emacs-cheatsheetcategory-computersciencetags-emacs">layout: post
title: Emacs Cheatsheet
category: ComputerScience
tags: [Emacs]</h2>
<p>Some shortcuts are only available in <a href="http://www.nekiri.com/computerscience/2017/07/14/my-emacsd.html">my configuration</a>.</p>
<!--
Basic & File & Buffer & Minibuffer & Windows
Edit & Marking & Transpose & Case
Motion
Search & Replace
Help
Programming
Ediff
Org-mode
For-schemers
-->
<!-- Basic & File & Buffer -->
<table> <!-- -->
<tr>
<td colspan="4"><span style="font-weight:bold">Basic</span></td>
</tr>
<tr>
<td>Minimize </td>
<td>C-z</td>
<td>Exit Emacs</td>
<td>C-x C-c</td>
</tr>
<tr>
<td>Run command</td>
<td>M-x</td>
<td></td>
<td></td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">File</span></td>
</tr>
<tr>
<td>Read a file</td>
<td>C-x C-f</td>
<td>Save a file</td>
<td>C-x C-s</td>
</tr>
<tr>
<td>Toggle read-only status</td>
<td>C-x C-q</td>
<td>Save all files</td>
<td>C-x s</td>
</tr>
<tr>
<td>Replace this file with..</td>
<td>C-x C-v</td>
<td>Save as..</td>
<td>C-x C-w</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Buffer</span></td>
</tr>
<tr>
<td>Switch to buffer..</td>
<td>C-x b</td>
<td>List all buffers</td>
<td>C-x C-b</td>
</tr>
<tr>
<td>Insert a file to buffer</td>
<td>C-x i</td>
<td>Kill buffer</td>
<td>C-x k</td>
</tr>
<tr>
<td>Kill some buffers</td>
<td>M-x kill-some-buffers</td>
<td>Last/Next buffer</td>
<td>C-x ←/→</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Minibuffer</span></td>
</tr>
<tr>
<td>Auto Complete</td>
<td>TAB</td>
<td>Complete and execute</td>
<td>RET</td>
</tr>
<tr>
<td>Fetch previous input</td>
<td>M-p</td>
<td>Fetch later input</td>
<td>M-n</td>
</tr>
<tr>
<td colspan="2">Regexp backward/forward search through history</td>
<td>M-r</td>
<td>M-s</td>
</tr>
<tr>
<td>Abort minibuffer</td>
<td>C-g</td>
<td>Redo last command</td>
<td>C-x Esc Esc</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Error Recovery</span></td>
</tr>
<tr>
<td>Recover file</td>
<td>M-x recover-session</td>
<td>Undo tree</td>
<td>C-x u</td>
</tr>
<tr>
<td>Restore buffer</td>
<td>M-x revert-buffer</td>
<td>Undo once</td>
<td>C-/ or C-_</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Windows</span></td>
</tr>
<tr>
<td>Delete all other windows</td>
<td>C-x 1</td>
<td>Delete current window</td>
<td>C-x 0</td>
</tr>
<tr>
<td>Split horizontally</td>
<td>C-x 2</td>
<td>Split vertically</td>
<td>C-x 3</td>
</tr>
<tr>
<td>Scroll other window</td>
<td>C-M-v</td>
<td>Switch to <a-z></td>
<td>C-x o <a-z></td>
</tr>
<tr>
<td>Switch to <1-9></td>
<td>M-<1-9></td>
<td>Find file in other window</td>
<td>C-x 4 f</td>
</tr>
<tr>
<td>Open buffer in other window</td>
<td>C-x 4 b</td>
<td colspan="2"></td>
</tr>
</table>
<!-- Editing & Marking -->
<table>
<tr>
<td colspan="4"><span style="font-weight:bold">Marking</span></td>
</tr>
<tr>
<td>Set mark point</td>
<td>C-@</td>
<td>Exchange point and mark</td>
<td>C-x C-x</td>
</tr>
<tr>
<td>Mark word by word</td>
<td>M-@</td>
<td>Mark paragraph</td>
<td>M-h</td>
</tr>
<tr>
<td>Mark page</td>
<td>C-x C-p</td>
<td>Mark sexp</td>
<td>C-M-@</td>
</tr>
<tr>
<td>Mark function</td>
<td>C-M-h</td>
<td>Mark entire buffer</td>
<td>C-x h</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Copy and Paste</span></td>
</tr>
<tr>
<td>Cut region to kill ring</td>
<td>C-w</td>
<td>Copy region to kill ring</td>
<td>M-w</td>
</tr>
<tr>
<td>Cut through next char</td>
<td>M-z <char></td>
<td>Paste (yank back)</td>
<td>C-y</td>
</tr>
<tr>
<td colspan="3">Replace last paste (yank) with previous kill</td>
<td>M-y</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Transpose</span></td>
</tr>
<tr>
<td>Transpose characters</td>
<td>C-t</td>
<td>Transpose words</td>
<td>M-t</td>
</tr>
<tr>
<td>Transpose lines</td>
<td>C-x C-t</td>
<td>Transpose sexps</td>
<td>C-M-t</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Case Change</span></td>
</tr>
<tr>
<td>Uppercase word</td>
<td>M-u</td>
<td>Lowercase word</td>
<td>M-l</td>
</tr>
<tr>
<td>Capitalize word</td>
<td>M-c</td>
<td>Uppercase region</td>
<td>C-x C-u</td>
</tr>
<tr>
<td>Lowercase region </td>
<td>C-x C-l</td>
<td colspan="2"></td>
</tr>
</table>
<!-- Motion -->
<table>
<tr>
<th rowspan="2">Cursor Motion<br></th>
<td colspan="4"><span style="font-weight:bold">Operation</span></td>
</tr>
<tr>
<td colspan="2">Move</td>
<td colspan="2">Delete</td>
</tr>
<tr>
<td>Amount</td>
<td>Forward</td>
<td><span style="font-weight:bold">B</span>ackward</td>
<td>Forward</td>
<td><span style="font-weight:bold">B</span>ackward</td>
</tr>
<tr>
<td>Characters</td>
<td>C-f</td>
<td>C-b</td>
<td>C-d</td>
<td>DEL</td>
</tr>
<tr>
<td>Words</td>
<td>M-f</td>
<td>M-b</td>
<td>M-d</td>
<td>M-DEL</td>
</tr>
<tr>
<td>Lines</td>
<td>C-n</td>
<td>C-p</td>
<td>C-k (to EOL)</td>
<td>C-SPC C-a C-w</td>
</tr>
<tr>
<td>Sentences</td>
<td>M-e</td>
<td>M-a</td>
<td>M-k</td>
<td>C-x DEL</td>
</tr>
<tr>
<td>Expressions</td>
<td>C-M-f</td>
<td>C-M-b</td>
<td>C-M-k</td>
<td>C-M-DEL</td>
</tr>
<tr>
<td>Section</td>
<td>C-M-a</td>
<td>C-M-e</td>
<td colspan="2" rowspan="3"></td>
</tr>
<tr>
<td>Paragraphs</td>
<td>M-}</td>
<td>M-{</td>
</tr>
<tr>
<td>Screen</td>
<td>M-v</td>
<td>C-v</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">End or Start of</span></td>
</tr>
<tr>
<td>Line</td>
<td colspan="2">C-e</td>
<td colspan="2">C-a</td>
</tr>
<tr>
<td>Buffer</td>
<td colspan="2">M-></td>
<td colspan="2">M-<</td>
</tr>
<tr>
<td>Defun</td>
<td colspan="2">C-M-a</td>
<td colspan="2">C-M-e</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Special Motion</span></td>
</tr>
<tr>
<td colspan="3">Go to line</td>
<td colspan="2">M-g g</td>
</tr>
<tr>
<td colspan="3">Go to Char</td>
<td colspan="2">M-g c</td>
</tr>
<tr>
<td colspan="3">Back to indentation</td>
<td colspan="2">M-m</td>
</tr>
<tr>
<td colspan="3">Scroll current line to center/top/bottom</td>
<td colspan="2">C-l</td>
</tr>
</table>
<!-- Search & Replace -->
<table>
<tr>
<td colspan="4"><span style="font-weight:bold">Search</span></td>
</tr>
<tr>
<td>Search forward</td>
<td>C-s</td>
<td>Search backward</td>
<td>C-r</td>
</tr>
<tr>
<td>Regexp forward</td>
<td>C-M-s</td>
<td>Regexp backward</td>
<td>C-M-r</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Replace</span></td>
</tr>
<tr>
<td>Start query replace</td>
<td>M-%</td>
<td>Query replace word</td>
<td>C-u M-%</td>
</tr>
<tr>
<td>Query replace by regexp</td>
<td>M-x query-replace-regexp</td>
<td>Replace once</td>
<td>y</td>
</tr>
<tr>
<td>Skip once </td>
<td>n</td>
<td>Replace all</td>
<td>!</td>
</tr>
<tr>
<td>Back up to previous match</td>
<td>^</td>
<td>Exit query Replace</td>
<td>RET</td>
</tr>
</table>
<!-- Help -->
<table>
<tr>
<td colspan="4"><span style="font-weight:bold">Help</span></td>
</tr>
<tr>
<td>Tutorial</td>
<td>C-h t</td>
<td>Search command by word</td>
<td>C-h a</td>
</tr>
<tr>
<td>Describe bindings</td>
<td>C-h b</td>
<td>Describe keys</td>
<td>C-h k</td>
</tr>
<tr>
<td>Describe functions</td>
<td>C-h f</td>
<td>Find function on keys</td>
<td>C-h K</td>
</tr>
<tr>
<td>Get mode information</td>
<td>C-h m</td>
<td>Describe packages</td>
<td>C-h P</td>
</tr>
</table>
<!-- Programming -->
<table>
<tr>
<td colspan="4"><span style="font-weight:bold">Programming</span></td>
</tr>
<tr>
<td>Toggle node</td>
<td>C-,</td>
<td>Comment a region</td>
<td>C-M-;</td>
</tr>
<tr>
<td>Insert comment line</td>
<td>M-;</td>
<td>Find next error</td>
<td>C-x '</td>
</tr>
<tr>
<td>Start a shell in a window</td>
<td>C-x t</td>
<td>Start slime</td>
<td>C-x j</td>
</tr>
<tr>
<td>Toggle <xxx>-mode</td>
<td>M-x <xxx>-mode</td>
<td>Compile window</td>
<td>M-x compile</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Shell</span></td>
</tr>
<tr>
<td>Execute a shell command</td>
<td>M-!</td>
<td>Execute asynchronously</td>
<td>M-&</td>
</tr>
<tr>
<td>Run command on a region</td>
<td>M-|</td>
<td>filter a region through a command</td>
<td>C-u M-|</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Paredit</span></td>
</tr>
<tr>
<td colspan="2">Before</td>
<td>After</td>
<td>Key</td>
</tr>
<tr>
<td colspan="2">(foo (bar |baz) quux zot)</td>
<td>(foo (bar |baz quux) zot)</td>
<td>C-<right></td>
</tr>
<tr>
<td colspan="2">(foo (bar |baz quux) zot)</td>
<td>(foo (bar |baz) quux zot)</td>
<td>C-<left></td>
</tr>
<tr>
<td colspan="2">(foo bar (baz| quux) zot)</td>
<td>(foo (bar baz| quux) zot)</td>
<td>C-M-<left></td>
</tr>
<tr>
<td colspan="2">(foo (bar baz |quux) zot)</td>
<td>(foo bar (baz |quux) zot)</td>
<td>C-M-<right></td>
</tr>
</table>
<!-- Ediff -->
<table>
<tr>
<td colspan="4"><span style="font-weight:bold">Ediff</span></td>
</tr>
<tr>
<td>Start ediff</td>
<td>M-x ediff</td>
<td>Suspend/Quit</td>
<td>z/q</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Move Around</span></td>
</tr>
<tr>
<td>Pervious diff</td>
<td>p or DEL</td>
<td>Next diff</td>
<td>n or SPC</td>
</tr>
<tr>
<td>Jump to diff</td>
<td>j</td>
<td>Goto X's point</td>
<td>gx</td>
</tr>
<tr>
<td>Recenter</td>
<td>C-l</td>
<td>Scroll up/down</td>
<td>v/V</td>
</tr>
<tr>
<td>Scroll lt/rt</td>
<td></></td>
<td>Swap Variants</td>
<td>~</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Toggle Features</span></td>
</tr>
<tr>
<td>Vert/Horiz split</td>
<td>|</td>
<td>Highlighting</td>
<td>h</td>
</tr>
<tr>
<td>Auto-refinement</td>
<td>@</td>
<td>Ignore whitespaces</td>
<td>##</td>
</tr>
<tr>
<td>Ignore case</td>
<td>#c</td>
<td>Focus/hide regions</td>
<td>#f/#h</td>
</tr>
<tr>
<td>read-only in buf X</td>
<td>X</td>
<td>wide display</td>
<td>m</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">Manipulate</span><br></td>
</tr>
<tr>
<td>Copy A/B's region to B/A</td>
<td>a/b</td>
<td>Restore buf X's old diff</td>
<td>rx</td>
</tr>
<tr>
<td>Refine current region</td>
<td>*</td>
<td>Update diff regions</td>
<td>!</td>
</tr>
<tr>
<td>Save buf x</td>
<td>wx</td>
<td>Save diff output</td>
<td>wd</td>
</tr>
<tr>
<td colspan="4"><span style="font-weight:bold">System</span></td>
</tr>
<tr>
<td>Show registry</td>
<td>R</td>
<td>Diff output</td>
<td>D</td>
</tr>
<tr>
<td>Status information</td>
<td>i</td>
<td>Compare regions</td>
<td>=</td>
</tr>
</table>
<!-- Todo: Org-Mode, For Schemers -->
</body>
</html>