On Fri, Feb 25, 2022 at 3:47 PM Junio C Hamano [off-list ref] wrote:

Kang-Che Sung [off-list ref] writes:

quoted

I wish "git worktree list --porcelain" would show directory names with some
quoting or escaping so that tricky names can be handled easily for any program
that reads the porcelain output. But I didn't see any command line option that
enables quoting or escaping of file names.

Does anyone have an idea on what I could do?

I agree that an output mode that claims to be --porcelain should
produce output that is machine-parseable without ambiguity.

The usual practice is to use quote_c_style() for output without
"-z", and with "-z", just use the NUL as the termination character,
as you shouldn't be listing strings with embedded NUL.

A couple additional comments...

Phillip has just submitted a patch to add a `-z` mode to `git worktree
list --porcelain`. You can see it at [1].

Porcelain mode should indeed be quoting the path using
quote_c_style(); the fact that it doesn't is a bug which would be nice
to fix. This has been discussed previously[2], however, there may be
backward compatibility concerns[3].

[1]: https://lore.kernel.org/git/pull.1164.git.1645801727732.gitgitgadget@gmail.com/ (local)
[2]: https://lore.kernel.org/git/CAPig+cQq_RnanDQ3jHfNz_L58WyzmsUJBhtdrLxa=H0v_io+WA@mail.gmail.com/ (local)
[3]: https://lore.kernel.org/git/936f9b7c-6d54-00bc-f136-4cb4c2836eb6@gmail.com/ (local)