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Octal escape

Reports octal escapes, which are easily confused with back references. Use hexadecimal escapes to avoid confusion.

Example:

\07

After the quick-fix is applied:

\x07

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.

RegExpOctalEscape
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 | RegExp

New in 2017.1

Inspection ID: RegExpOctalEscape

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 RegExpOctalEscape

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