> On May 5, 2016, at 6:27 PM, Tyler Cloutier via swift-evolution
> <[email protected]> wrote:
>
>
>> On May 5, 2016, at 5:08 PM, John Holdsworth via swift-evolution
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>>
>>> On 5 May 2016, at 14:17, David Hart <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>>
>>>> On 05 May 2016, at 12:30, Michael Peternell via swift-evolution
>>>> <[email protected] <mailto:[email protected]>> wrote:
>>>>
>>>> it's not a secret that I'm not a big fan of the proposal. The third draft
>>>> doesn't change this and it's unlikely that any future draft will, because
>>>> for me, the problem are the continuation quotes, and for Brent it seems
>>>> like they are a must-have-feature (correct me if I'm wrong.)
>>>
>>> I agree with all you said. I’m fairly sure I would never vote for Brent’s
>>> proposal simply because of the existence of continuation quotes, no matter
>>> the amount of reasoning behind it. They are simply too unwieldy, cumbersome
>>> and unfriendly to modification.
>>>
>>> I could see either your proposal, or your proposal without the HERE_DOCs
>>> but using Tyler’s/Scala’s .stripMargin. Do you think you could start a
>>> formal proposal?
>>
>>
>> Adapting the original proposal if you’re not a fan of continuation quotes..
>>
>> It’s possible to have a multiline “””python””” multi-line string but tidily
>> indented.
>> As suggested earlier in this thread the lexer can strip the margin on the
>> basis of
>> the whitespace before the closing quote as per Perl6 (This could be a
>> modifier “I”
>> but might as well be the default TBH.) Would this be the best of both worlds?
>>
>> assert( xml == i"""
>> <?xml version="1.0"?>
>> <catalog>
>> <book id="bk101" empty="">
>> <author>\(author)</author>
>> <title>XML Developer's Guide</title>
>> <genre>Computer</genre>
>> <price>44.95</price>
>> <publish_date>2000-10-01</publish_date>
>> <description>An in-depth look at creating applications
>> with XML.</description>
>> </book>
>> </catalog>
>> ""” )
>>
>> Other modifiers can also be applied such as “no-escapes"
>>
>> assert( xml != ei"""<?xml version="1.0"?>
>> <catalog>
>> <book id="bk101" empty="">
>> <author>\(author)</author>
>> <title>XML Developer's Guide</title>
>> <genre>Computer</genre>
>> <price>44.95</price>
>> <publish_date>2000-10-01</publish_date>
>> <description>An in-depth look at creating applications
>> with XML.</description>
>> </book>
>> </catalog>
>> """ )
>>
>> I’d hope this would satisfy any need for <<HERE/<<‘HERE’ style constructs.
>>
>> Or you could support both continuation and indented python style:
>> http://johnholdsworth.com/swift-LOCAL-2016-05-05-a-osx.tar.gz
>> <http://johnholdsworth.com/swift-LOCAL-2016-05-05-a-osx.tar.gz>
>>
>> John
>>
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>
> I’m of the opinion that either of these are reasonable solutions, and both
> offer different tradeoffs. I’m probably partial to the continuation quotes,
> because I don’t want to be guessing about what is going to end up being in my
> string and what won’t.
>
>> assert( xml != ei"""<?xml version="1.0"?>
>> <catalog>
>> <book id="bk101" empty="">
>> <author>\(author)</author>
>> <title>XML Developer's Guide</title>
>> <genre>Computer</genre>
>> <price>44.95</price>
>> <publish_date>2000-10-01</publish_date>
>> <description>An in-depth look at creating applications
>> with XML.</description>
>> </book>
>> </catalog>
>> ""” )
>
> For example, is there a new line after </catalog>?
> How would the indenting work if it were immediately followed by triple
> quotes: </catalog>”””
> I would really like the first line to be lined up with the rest of the xml.
> Is that going to introduce a newline into the top of the string?
>
> Could we just enforce that no characters on the lines of the triple quotes
> would be included in the string, very much like the heredoc syntax?
>
> assert( xml != ei"”” The text I’m typing here would cause a compiler
> error.
> <?xml version="1.0"?>
> <catalog>
> <book id="bk101" empty="">
> <author>\(author)</author>
> <title>XML Developer's Guide</title>
> <genre>Computer</genre>
> <price>44.95</price>
> <publish_date>2000-10-01</publish_date>
> <description>An in-depth look at creating applications
> with XML.</description>
> </book>
> </catalog>
> same here ""” )
>
> Then it’s very clear what the whitespace stripping will do. But what about
> mixed tab vs whitespace? What is the behavior in that case?
>
> Tyler
>
> _______________________________________________
> swift-evolution mailing list
> [email protected]
> https://lists.swift.org/mailman/listinfo/swift-evolution
Then you could even, if you were so daring, put the string modifiers in the
string as compiler directives.
assert( xml !=
“”” #escaped #marginStripped
<?xml version="1.0"?>
<catalog>
<book id="bk101" empty="">
<author>\(author)</author>
<title>XML Developer's Guide</title>
<genre>Computer</genre>
<price>44.95</price>
<publish_date>2000-10-01</publish_date>
<description>An in-depth look at creating applications with
XML.</description>
</book>
</catalog>
""” )
Is this dirty? It sure feels dirty, but it also makes it so I can line up my
triple quotes and finally achieve a zen state.
Tyler
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