> On Apr 6, 2017, at 12:35 PM, Joe Groff <[email protected]> wrote:
>
> Hello Swift community,
>
> The review of SE-0168 "Multi-Line String Literals" begins now and runs
> through April 12, 2017. The proposal is available here:
>
> https://github.com/apple/swift-evolution/blob/master/proposals/0168-multi-line-string-literals.md
>
> <https://github.com/apple/swift-evolution/blob/master/proposals/0168-multi-line-string-literals.md>
>
> Long strings are strings delimited by """triple quotes""" that can contain
> newlines and individual " characters without the need to escape them.
Are the set of backslash-escapes inside a long string identical to the set used
in short strings? I assume that \" inside a long string is interpreted as an
escaped double-quote; otherwise there would be no way to write """ inside a
long string.
> To allow free formatting of the literal an indentation stripping operation is
> applied whereby any whitespace characters in front of the closing delimiter
> are removed from each of the lines in the literal. As part of this process
> any initial linefeed is also removed. This allows the developer to paste
> literal content directly into the string without modification. Some concern
> has been expressed about could introduce confusion if the prefixing
> indentation of each line does not contain the same whitespace characters,
> though this can be checked for by a compiler warning.
To clarify, is this the intended algorithm?
if the source code of the closing delimiter matches regex(\n\s+""") {
collect the sequence of whitespace characters between the newline and
the delimiter
remove exactly that sequence of characters, if present, from the front
of each source-code line after the line containing the opening delimiter
if a line does not start with those characters, emit a warning
}
--
Greg Parker [email protected] Runtime Wrangler
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