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Escaped meta character

Reports escaped meta characters. Some RegExp coding styles specify that meta characters should be placed inside a character class, to make the regular expression easier to understand. This inspection does not warn about the meta character [, ] and ^, because those would need additional escaping inside a character class.

Example:

\d+\.\d+

After the quick-fix is applied:

\d+[.]\d+

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.

RegExpEscapedMetaCharacter
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: RegExpEscapedMetaCharacter

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 RegExpEscapedMetaCharacter

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