Remove obsolete note on escapes in interpolations

[som-snytt]

Scala 2/3 have parity on "how to escape double quote in an interpolated string with single-double quotes" since #11751

This commit fixes the Edison quotation (though I did not track down a source) and also adds a second bon mot which everyone knows from childhood, to illustrate both forms of escape. Google cites a source which cites the letter.

No links were harmed in the production of this PR.

[som-snytt]

The CI failure doesn't tell you where the link is referenced, but looking up the stack:

 java.nio.file.NoSuchFileException: /tmp/sbt_7e88341f/docs/_docs/reference/changed-features/interpolation-escapes.md
	at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
[snip]
	at dotty.tools.scaladoc.site.StaticSiteLoader.loadBasedOnYaml(StaticSiteLoader.scala:92)

So grepping in *.yml finds the two locations. Not sure why there are two. One gets accustomed to automation.

[som-snytt]

@pikinier20 is this a no-brainer? I haven't followed whether there are changes in how docs are handled in scala 3.

[SethTisue]

@Sporarum is this one you might be interesting in reopening and reviewing?

[Sporarum]

@som-snytt I'm not very familiar with these escaping questions, could you clarify what you mean by

s"$"hi$"" is interpolator-agnostic. s"\"hi\"" supplies the escapes to the interpolator by not taking \" as end-of-string. The standard interpolator understands \" as literal quote.

[som-snytt]

scala 2.13.10> s"$""
val res0: String = "

scala 2.13.10> s"\""
val res1: String = "

scala 2.13.10> raw"\""
val res2: String = \"

[Sporarum]

And from my tests, the behaviour is the same in Scala 3.2.0
So the point of this PR is to say there is no more a difference between 2 and 3, got it

Now the question, why was this PR closed ?

[som-snytt]

"Closed for inactivity."

[Sporarum]

Oh I see, I believe this would be valuable
I think it is not mergeable as-is, because we wish to keep the links valid

I see two options:

• Delete the page during a version change, assuming we do not guarantee the stability of pages at urls like https://docs.scala-lang.org/scala3/reference/syntax.html but we do for url including a version number, like https://dotty.epfl.ch/3.0.0/docs/reference/syntax.html
• Updating the page to say it no longer applies

[som-snytt]

@Sporarum I updated the page per your second suggestion, but I made it interesting instead of boring. It's worth advertising the behavior anyway.

Also TIL "Quentin Bernet". Is a bernet the sort of beret they wear in Berne?

[som-snytt]

I don't know if that is 99% by weight or volume.

[Sporarum]

Looks good to me !

(I'm not 100% sure of the etymology of my name, but it seems indeed linked with the city of Bern, it might mean "from Bern" or something like that)

[Sporarum]

Oh actually, we should maybe keep a part that explicitly mentions the old Scala 3 behaviour, again for the link's sake ?

[Sporarum]

Upon further consideration, I think the raw example should be included before this gets merged, to motivate the existence of the feature, and it's difference with the other way

[som-snytt]

Closing again because you're merging #16772 instead. Show some respect.

[SethTisue]

@som-snytt can't tell if you're in earnest or not?

I see some overlap between the two PRs, but not all that much.

[som-snytt]

My point is that rebasing stale PRs is rock bottom contributor experience. "Use it or lose it."

[som-snytt]

This would have been an appropriate section, perhaps, to document scala/bug#12789 rooted StringContext.

Edit: the have a spec version now, so the edit is at https://github.com/lampepfl/dotty/blob/main/docs/_spec/01-lexical-syntax.md

[Sporarum]

As the spec is not ready to deploy yet, the focus should be on fixing the reference

As such, I highly encourage you to reopen this PR which I believe to be valuable
(It is possible you can't reopen it, if that is the case, I'm not sure how to help you as I can't either)