Does git submodule update --recursive override fetchRecurseSubmodules?

Question

I have a submodule who's submodules I don't need. For example:

mainProject
  - usefulSubmodule
    - notNeededSubmodule

So in mainProject, I define my .gitmodules like so:

[submodule "usefulSubmodule"]
    path = lib/usefulSubmodule
    url = https://whatever
    fetchRecurseSubmodules = false

Then I run git submodule update --init --recursive after updating, and it seems that this is ignoring the value of fetchRecurseSubmodules (which I guess may be true according to the documentation https://git-scm.com/docs/gitmodules#Documentation/gitmodules.txt-submoduleltnamegtfetchRecurseSubmodules )

So therefore my question is, how do I disable this behavior without overriding it during update? What is the best way to update all my submodules while respecting that flag?

... run git submodule update init without --recursive? (Presumably you'll then need to set fetchRecurseSubmodules = true in any submodules where you do want the recursion.) — torek
– torek, Commented Oct 15, 2019 at 23:14
Exactly. The docs do point out that a nonspecific update updates all the .gitmodules submodules, you've simply imagined the need for that option here. — jthill
– jthill, Commented Oct 15, 2019 at 23:21
ah perhaps I'm missing something. So is on-demand the default for this property if it is not present? — yano
– yano, Commented Oct 15, 2019 at 23:27

yano · Accepted Answer · 2019-10-16 22:27:38Z

2

So is on-demand the default for this property if it is not present?

Yes, that is what git config fetch.recurseSubmodules specifies:

When set to on-demand (the default value), fetch and pull will only recurse into a populated submodule when its superproject retrieves a commit that updates the submodule’s reference.

Note: if you want to override locally (for just one command) a configuration:

git -c fetch.recurseSubmodules=on-demand submodule update --init

But in this case, it is not needed (this is just to illustrate how one can set a config for one git command)

edited Oct 16, 2019 at 22:27

yano

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answered Oct 16, 2019 at 4:55

VonC

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