This will parse command with/without arguments like: command --arg1=string --arg2=string `

Implements PCRE named-capture (with comments) for the Semantic Versioning 2.0.0 standard - processing is left an exercise for the reader ;)

Regex regarding format described in https://www.uldcare.com/uld-identification-codes-demystified/

Outbound Flight Information element (.F) is mandatory when used as part of a reconciliation or sortation process. If used for ground tracking it is optional. OUTBOUND FLIGHT INFORMATION (M) Element Identifier .F (M) Airline and Flight Number /BA117 (M) Date /03OCT...

1 3 AN IATA Airport or IATA City Code. For test-bed nodes, provider specific code. 2 1 AN Provider code : A ARINC B IBS C Ink Aviation D BagDrop Systems...

Put together from information in: https://github.com/docker/distribution/blob/master/reference/reference.go (see comment at the beginning of the file) and https://github.com/docker/distribution/blob/master/reference/normalize.go (see func splitDockerDomain)

Captures the weight of a product.