SYSML2_ — Regularization of textual notation for loops

The textual notation should be regularized between the until loop and while loop.

The proposed update is loop while action actionName where action and actionName are optional.

No change

The suggested change would be backwards incompatible with little or no end-user benefit, other than a perceived "regularity". The current syntax was intentionally chosen to keep the while-loop notation simple and familiar. As described in 7.17.2 Loop Action Usages, the loop keyword can be thought of as simply a shorthand for while true. Requiring the loop keyword in addition to while is thus essentially redundant and unnecessary.