Currently, when we write a script into the ScriptTool, the automatic indentation is set to 2 spaces, but we always use 4 spaces. I think this problem is already in other code editors of Ametys (using Ametys.form.field.Code).

On the CodeMirror component, it seems there are options for this :

indentUnit: 2,
indentWithTabs: false,
smartIndent: true,
tabSize: 4,\

Also, the tab key create a tab character but not spaces, maybe we can force it to spaces ? (But if we have 4 spaces for default indentation, perhaps it's useless)

insertTab: function(cm {cm.replaceSelection("\t", "end");},