[Issue 14682] [REG2.037] Incorrect interpretation of ~ []

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14682

--- Comment #5 from Vladimir Panteleev <thecybersha...@gmail.com> ---
I think it should be fixed, because if you want to append [""], you can do so
explicitly, but if you want to append an empty array, there is no convenient
syntax for it.

I ran into it with the following code:

run([make,
    "-f", makeFileName,
    "all", "kindle", "pdf", "verbatim",
    "LATEST=" ~ latest,
    ] ~ (config.noDateTime ? ["NODATETIME=nodatetime.ddoc"] : []) ~ [
], sourceDir);

Here I wanted to make an array element conditionally present, so I used:

] ~ (cond ? [elem] : []) ~ [

inside an array literal.

The problem is that this line's meaning changes on whether it is the last line
in the array literal or not.

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