Hey folks,

We've revised the proposal again. The main difference: You no longer need an 
initial newline to enable indentation stripping, and stripping no longer 
removes that newline even if it is present. (Adrian Zubarev and I believe some 
others argued for this.) We disagreed with this at first, but it made more 
sense as we thought about it more. There are a few things we like about it:

        1. The rules and algorithm are simpler.
        2. It accommodates more coding styles.
        3. Every non-escaped newline in the literal now creates a corresponding 
newline in the resulting string.
        4. it's easy to get the old behavior back by backslashing the leading 
newline.

Unfortunately, I think this precludes stripping the trailing newline by 
default, but I think this is ultimately a simpler and better approach than the 
previous draft.

Other changes:

        * We realized we needed to make closing delimiter matching a little 
more complicated if we wanted to allow one or two adjacent double-quote 
characters that were part of the literal's contents. Oops.
        * Tabs aren't actually allowed in ordinary string literals, so we now 
explicitly mention that as a difference between the two types.
        * We wrote some tests for the prototype (though they haven't been 
updated for this new version yet). 
        * There were some other wording changes, particularly in the 
indentation stripping rationale, but nothing that affects the actual design.

I understand John is working on a new version of his toolchain so people can 
play with the prototype. We hope to have that ready for you all soon.

Let us know what you think of the revisions!

-- 
Brent Royal-Gordon
Architechies

_______________________________________________
swift-evolution mailing list
[email protected]
https://lists.swift.org/mailman/listinfo/swift-evolution

Reply via email to