Suspicious back reference
Reports back references that will not be resolvable at runtime. This means that the back reference can never match anything. A back reference will not be resolvable when the group is defined after the back reference, or if the group is defined in a different branch of an alternation.
Example of a group defined after its back reference:
Example of a group and a back reference in different branches:
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.
RegExpSuspiciousBackref- 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.
New in 2022.1
Inspection Details | |
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By default bundled with: | CLion 2024.3, DataGrip 2024.3, DataSpell 2024.1, GoLand 2024.3, IntelliJ IDEA 2024.3, JetBrains Rider 2024.3, PhpStorm 2024.3, PyCharm 2024.3, Qodana for .NET 2024.3, Qodana for Go 2024.3, Qodana for JS 2024.3, Qodana for JVM 2024.3, Qodana for PHP 2024.3, Qodana for Ruby 2024.3, RubyMine 2024.3, WebStorm 2024.3 Writerside 2024.3 |
Can be installed with plugin: | IDEA CORE, 241.SNAPSHOT |