Comma-separated arguments seem to be split with rustup run

[alexcrichton]

Whenever I use rustup run it seems to interfere with comma-separated arguments:

$ rustup run stable rustc --emit llvm-ir,link foo.rs
error: multiple input filenames provided

$ rustc --emit llvm-ir,link foo.rs
$

Is there perhaps something going on with the rustup option parser?

[Diggsey]

Does separating it with -- help?

edit: Hmm no, seems like a problem with clap?

[kbknapp]

You need to add use_delimiter(false) to this line.

Detailed info.

[Diggsey]

@kbknapp Ah, thanks - will this combination ensure that the remaining arguments are passed through unaltered in all cases?

[kbknapp]

@Diggsey yes, by default arguments with a comma are separated into distinct arguments, i.e. --option 'one,two,three' becomes --option 'one' 'two' 'three'

The setting linked above says, don't use a delimiter at all. The delimiter can alternatively be changed a character other than a comma as well.