Confirm identifiers for attributes

[westonruter]

We currently have these block attributes:

• language
• selectedLines
• showLines
• wrapLines

Before we release 1.2 and blocks out in the wild start using these, we should make sure we're happy with them. I realize that showLines is actually live already, but selectedLines and wrapLines are not. I'm thinking the names don't entirely reflect what the properties do. The

Old	New	Note
selectedLines	highlightedLines	Because the UI uses “Highlighted Lines”.
showLines	showLineNumbers	Lines are always shown. It's the numbers that are in view here. This also corresponds with the UI which has “Show Line Numbers”.

I think we can support the showLines as a legacy property name which we automatically copy to showLineNumbers.

[allejo]

👍 for these new proposed names from me