composer discard changes: what do the [y,n,v,d,s,?] do

问题:

Simple question that's been bugging me for months.

Occasionally I'll dive into the vendors directory to fix a bug (especially for our internal libs). After migrating and deploying the fix back to the source package, I'll composer update company/package in the main project and am asked:

Discard changes [y,n,v,d,s,?] 

I have a decent grasp on y and n but haven't been able to find documentation about what v, d, s, ? do? I always hit y but maybe I'm missing out on something useful.

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Edits:

• added d option (oct '17)

回答1:

Choosing ? shows you the details:

y - discard changes and apply the update n - abort the update and let you manually clean things up v - view modified files d - view local modifications (diff) s - stash changes and try to reapply them after the update 

You can also check the source code, the relevant part is here.

回答2:

If you run with the --no-interaction, you can set discard-changes: true in composer.json file and you wont get prompted for this option every time.

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