Code Inspection: Ranges in class can be merged
Configure inspections: Settings | Editor | Inspections
Show intention actions: AltEnter
Reports the alphabetic ranges or characters in regular expression character classes that only adjust the already existing ranges. Such elements can be merged with the adjusted ranges.
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.