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Author SHA1 Message Date
Johannes Schindelin
96f53100ba
Mark test scripts with Bash'isms to be run via Bash (#1377)
In #1369, I mistakenly replaced the hash-bang lines in the two new
scripts with `#!/bin/sh`, missing that both files contain the Bash'ism
`[[`. Symptom as per
https://github.com/actions/checkout/actions/runs/5200323109/jobs/9378889172?pr=1369#step:12:5

    __test__/verify-sparse-checkout.sh: 58: [[: not found

Let's change those hash-bang lines back to `#!/bin/bash`.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-06-09 11:05:29 -04:00
Johannes Schindelin
d106d4669b
Add support for sparse checkouts (#1369)
* Add support for sparse checkouts

* sparse-checkout: optionally turn off cone mode

While it _is_ true that cone mode is the default nowadays (mainly for
performance reasons: code mode is much faster than non-cone mode), there
_are_ legitimate use cases where non-cone mode is really useful.

Let's add a flag to optionally disable cone mode.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

* Verify minimum Git version for sparse checkout

The `git sparse-checkout` command is available only since Git version
v2.25.0. The `actions/checkout` Action actually supports older Git
versions than that; As of time of writing, the minimum version is
v2.18.0.

Instead of raising this minimum version even for users who do not
require a sparse checkout, only check for this minimum version
specifically when a sparse checkout was asked for.

Suggested-by: Tingluo Huang <tingluohuang@github.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

* Support sparse checkout/LFS better

Instead of fetching all the LFS objects present in the current revision
in a sparse checkout, whether they are needed inside the sparse cone or
not, let's instead only pull the ones that are actually needed.

To do that, let's avoid running that preemptive `git lfs fetch` call in
case of a sparse checkout.

An alternative that was considered during the development of this patch
(and ultimately rejected) was to use `git lfs pull --include <path>...`,
but it turned out to be too inflexible because it requires exact paths,
not the patterns that are available via the sparse checkout definition,
and that risks running into command-line length limitations.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

---------

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Co-authored-by: Daniel <daniel.fernandez@feverup.com>
2023-06-09 09:08:21 -04:00