> Of the 3, Lua's is probably the best, although it's a bit esoteric (with
> using [[ and nary a quote in sight).
I think an important thing to keep in mind is that the main reason
behind creating a new form of literal is for things like:
* Escapes in format! strings
* Possible regular expression syntax (this also may be a syntax extension)
* Type literal windows paths (escaping \ is hard)
* Otherwise long literals which may contain quotes (like html text)
With those in mind, although Lua's syntax is sufficient, is it nice to
use? If the first thing I saw as an introduction to Rust was:
fn main() {
println!([[Hello, {}!]], "world");
}
I would be a little confused. Now the [[/]] aren't really necessary in
this case, but I'm personally unsure of how usable [[/]] would be
throughout the language. Raw literals in languages like C++ and Lua I
think aren't intended to be used that often. Instead they should be
used only when necessary, and you frequently don't see them in code.
For rust, the use cases which are the cause of this discussion are
actually fairly common, and I'm not sure that we'd want to see [[/]]
all over the place, although of course that's just my opinion :)
Skimming back, I haven't seen a suggestion of the backtick character
as a delimiter. Go takes this approach, and I don't believe that in Go
you can have a backtick anywhere in a backtick literal, and otherwise
what you see is what you get. It's at least something to consider,
though.
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