org-table-range-regexp

org-table-range-regexp is a variable defined in `org-table.el'.
Its value is

"@\\([-+]?I*[-+]?[0-9]*\\)?\\(\\$[-+]?[0-9]+\\)?\\(\\.\\.@?\\([-+]?I*[-+]?[0-9]*\\)?\\(\\$[-+]?[0-9]+\\)?\\)?"

• This variable may be risky if used as a file-local variable.

Documentation:
Regular expression for matching ranges in formulas.