php - Modify files in /vendor directory and commit changes to composer.lock?

Solution:

You should fork the package, create a custom repo with your changes - then include that in yourcomposer.json.

{
    "repositories": [ {
            "type": "vcs",
            "url": "https://github.com/YourGithubUsername/PackageName"
         }
    }],
    "require": {
        "laravel/framework": "4.0.*",
        "OriginalVendor/PackageName": "1.0.*"
    },
}
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That way you can pull your custom changes in anytime, without having to commit it to your specific project.

You can read more about forking and loading packages here: https://getcomposer.org/doc/05-repositories.md#vcs