Multiline string literals

[Weijun Wang]

This is an interesting topic.

1. I don't like a platform-dependent \n vs \r\n decision. Either you 
must provide U or W at the end, or the default is always \n. The same 
program compiling to different classes on different platforms just seems 
bad.

2. I prefer never escape anything. If you do want to put """ inside a 
string, do not using the new format.

3. I care more about other kind of white spaces. The de-indentation 
trick in the proposal should work in most cases. How about TABs in the 
string? How about trailing spaces? Most IDEs will remove trailing spaces.

Thanks
Max

On 08/07/2011 04:30 AM, Ruslan Shevchenko wrote:
> 1. Last submission: 1.4 for multiine string literals is
>       http://mail.openjdk.java.net/pipermail/coin-dev/2009-March/000747.html
>   which in many aspects differ from first version.
>
> Also, I maintain 'post-morten' final version:
>     https://docs.google.com/Doc?docid=0AX56ZsgNVurJZGhodmdncjhfMjFncjVzNGZoZw
>   which can be used as starting point, if Oracle decide to receive
> proposals about language direction from external world with reopening
> or creation of some analog  of project coin.    [my estimation for
> probability of such case is not very hight.]
>
> 2.  In general, this proposal describe multiline strings as they
> implemented in scala and groovy now.  One problem with this: """ are
> IDE-unfriendly: complexity of implementing mulitline string support
> for groovy in netbeans shows this.
>
> So, now I think that  """"  symbols in proposal is better change to
> pair of  "(    )"   (and '(    )'  for row string literals),  simular
> to brackets for multiline string literals in C++0x
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm
>
> Regards !
>
> On Sat, Aug 6, 2011 at 6:12 PM, Per Bothner<per at bothner.com>  wrote:
>> On 08/06/2011 03:41 AM, Peter Reilly wrote:
>>> Now that jdk7 is released and there will shortly be a process for
>>> asking for new small features in jdk8, I would like to ask that
>>> support for multiline string literals be considered.
>>>
>>> This is a long standing request and a specific proposal is contained in:
>>>
>>> http://mail.openjdk.java.net/pipermail/coin-dev/2009-March/000087.html
>>
>> I think it would be a mistake for multiline string literals to have
>> the ending delimiter be the same as the starting delimiter.  It seems
>> lie it would make things more difficult for IDEs.  Using """ also seems
>> prone to syntax errors with possibly-confusing error messages.  And it makes
>> it harder to scan the text (visually or with tools) for matching delimiters.
>>
>> I also think this is a questionable idea:
>>
>> String platformDepended="""q
>> """;
>> is 'q\n' if compiled on Unix and 'q\n\r' if compiled on Windows.
>>
>> This make the meaning of a program depend on which platform
>> it is compiled on.  Probably not something we want.  You could
>> change it to depend on the program it is *run* on, by defining it
>> in terms of line.separator - that would make more sense.
>> --
>>         --Per Bothner
>> per at bothner.com   http://per.bothner.com/
>>
>>
>