1 ^((<|>)?=?)s*(\s*[v=]*\s*([0-9]+)\.([0-9]+)\.([0-9]+)(-[0-9]+-?)?([a-zA-Z-+][a-zA-Z0-9-.:]*)?)$|^$ 2 >=0.6.0-,>=,>,0.6.0-,0,6,0,,- 3 =0.6.0-,=,,0.6.0-,0,6,0,,- 4 0.6.0-,,,0.6.0-,0,6,0,,- 5 <=0.6.0-,<=,<,0.6.0-,0,6,0,,- 6 >=0.6.0-a:b-c.d,>=,>,0.6.0-a:b-c.d,0,6,0,,-a:b-c.d 7 =0.6.0-a:b-c.d,=,,0.6.0-a:b-c.d,0,6,0,,-a:b-c.d 8 0.6.0+a:b-c.d,,,0.6.0+a:b-c.d,0,6,0,,+a:b-c.d 9 <=0.6.0+a:b-c.d,<=,<,0.6.0+a:b-c.d,0,6,0,,+a:b-c.d 10 a 11 b 12 y 13 z 14 B 15 Y 16 Z 17 - 18 +