--shell 'busybox sh', 'zsh --emulate posix', 'bash --posix'

[mralusw]

It seems that --shell needs to be a single word -- which makes it impossible, amongst others, to test busybox sh or zsh --emulate sh or bash --posix.

Sure, for busybox you can symlink, and for zsh / bash, I suppose you can create a stub script (or small C wrapper) that exec's the real shell with prepended options. But of course that perturbs the measurement.

It might make sense to do simple whitespace splitting of the provided shell string. At most, we might have to handle '\ ' (to allow for shell executables with whitespaces in their paths). Or we could try looking up the shell in $PATH first (like it's currently done), then if that fails, try whitespace splitting.

[sharkdp]

Thank you for reporting this. This should be supported, I agree.

It might make sense to do simple whitespace splitting of the provided shell string. At most, we might have to handle '\ ' (to allow for shell executables with whitespaces in their paths). Or we could try looking up the shell in $PATH first (like it's currently done), then if that fails, try whitespace splitting.

We can use shell-words (https://crates.io/crates/shell-words). See also: #336

[rhysd]

I'll work on this.

[sharkdp]

Please take note of #429 which also touches similar parts of the code base
maybe it makes sense to merge #429 first or to base your changes on this branch.

[rhysd]

@sharkdp Ah, I've already created a PR #436 before I noticed the PR..

[rhysd]

Can we merge #436 at first then request #429 author to merge the main branch? Since I'm not understanding what #429 is solving and #429 is in the middle of work, I feel a bit hard to merge it.