Code Inspection: Single character alternation
Configure inspections: Settings | Editor | Inspections
Show intention actions: AltEnter
Reports single char alternation in a RegExp. It is simpler to use a character class instead. This may also provide better matching performance.
Example:
a|b|c|d
After the quick-fix is applied:
[abcd]
New in 2017.1
Place the caret at the highlighted line and press AltEnter or click
.
Click the arrow next to the inspection you want to suppress and select the necessary suppress action.