Copying a list of files from different directories gives (possibly) wrong result

[ianthomas23]

Another discrepancy that has arisen from #1226 and related work.

cp(["source/file1", "source/subdir/subfile2"], "target/")

gives target/file1 and target/subdir/subfile2, i.e. it keeps the relative directory structure of the source files.

The command-line equivalent gives

$ cp source/file1 source/subdir/subfile2 target/
$ tree target
target
├── file1
└── subfile2

so that source files are all copied into the target directory.

For consistency I lean towards doing the same as command-line copy, but I suspect that this was a specific design decision and a substantial amount of work has gone into making the behaviour as it currently is.