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Code Inspection: Duplicate character in character class

Last modified: 13 May 2022

Configure inspections: Settings | Editor | Inspections

Show intention actions: AltEnter

Reports duplicate characters inside a RegExp character class. Duplicate characters are unnecessary and can be removed without changing the semantics of the regex.

Example:

[aabc]

After the quick-fix is applied:

[abc]

Suppress an inspection in the editor

  1. Place the caret at the highlighted line and press AltEnter or click the Intention action icon.

  2. Click the arrow next to the inspection you want to suppress and select the necessary suppress action.

See also

Procedures