Test, validate and match regular expressions
Matches positive or negative numbers, including decimals with either dot or comma separators (supporting European notation) and fractions written with forward slashes. It can also match chained fraction-like sequences such as '1/2/3' or decimal fractions like '3.5/2.5'. Useful for extracting numeric values, measurements, or recipe quantities from text, with the gm flags enabling global, multiline matching.