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Duplicate character class letter

Reports wildcard patterns in the EditorConfig section that contain a duplicate character in the character class, for example [aa].

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

EditorConfigCharClassLetterRedundancy
Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | EditorConfig

Inspection ID: EditorConfigCharClassLetterRedundancy

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection EditorConfigCharClassLetterRedundancy

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Last modified: 18 September 2025