<dl>

  <dt id="option_indentWithTabs"><code><strong>indentWithTabs</strong>: boolean</code></dt>

  <dd>Whether, when indenting, the first N*<code>tabSize</code>

  spaces should be replaced by N tabs. Default is false.</dd>

​

  <dt id="option_electricChars"><code><strong>electricChars</strong>: boolean</code></dt>

  <dd>Configures whether the editor should re-indent the current

  line when a character is typed that might change its proper

  indentation (only works if the mode supports indentation).

  Default is true.</dd>

​

  <dt id="option_specialChars"><code><strong>specialChars</strong>: RegExp</code></dt>

  <dd>A regular expression used to determine which characters

  should be replaced by a

  special <a href="#option_specialCharPlaceholder">placeholder</a>.

  Mostly useful for non-printing special characters. The default

  is <code>/[\u0000-\u0019\u00ad\u200b\u2028\u2029\ufeff]/</code>.</dd>

  <dt id="option_specialCharPlaceholder"><code><strong>specialCharPlaceholder</strong>: function(char) → Element</code></dt>

  <dd>A function that, given a special character identified by

  the <a href="#option_specialChars"><code>specialChars</code></a>

  option, produces a DOM node that is used to represent the

  character. By default, a red dot (<span style="color: red">•</span>)

  is shown, with a title tooltip to indicate the character code.</dd>

​

  <dt id="option_rtlMoveVisually"><code><strong>rtlMoveVisually</strong>: boolean</code></dt>

  <dd>Determines whether horizontal cursor movement through

  right-to-left (Arabic, Hebrew) text is visual (pressing the left

  arrow moves the cursor left) or logical (pressing the left arrow

  moves to the next lower index in the string, which is visually

  right in right-to-left text). The default is <code>false</code>

  on Windows, and <code>true</code> on other platforms.</dd>

</dl>

​