Intellij "before commit" options meaning

Question

I cannot find the documentation about the several options (checkboxes) that are visible when commiting.

I'm looking for an option to squash all commits from the IDE, and I'm wondering if one of these options couldn't help me to do that. Is there any official documentation about the different options?

Answer 1

Here are the brief descriptions of the before commit operations (source):

Operation	Description
Reformat code	Perform code formatting according to the Project Code Style settings.
Rearrange code	Rearrange your code according to the arrangement rules preferences.
Optimize imports	Remove redundant import statements.
Perform code analysis	Perform code analysis Run code inspection on the files you are about to commit/shelve.
Check TODO (filter name)	Review the TODO items matching the specified filter. Click Configure to choose an existing TODO filter, or open the TODO settings page and define a new filter to be applied.
Cleanup	Automatically apply the current inspection profile to the files you are going to commit/shelve.
Update copyright	Add or update a copyright notice according to the selected copyright profile - scope combination.

Answer 2

Following my original comment, I think there are 2 distinct features:

1. The before commit section, described in detail here, offers a few code-inspections tasks which Idea will run on your classes before actually committing them. Depending on their output (eg: new TODOs), some may request a confirmation that you indeed want to perform the commit:

2. The squash feature, which I'm not very familiar with yet, is perhaps accessible from the Rebasing Commits Dialog