git add . is nondestructive and reversible. I tend to do git add . and then run git status.
I’m far more interested in confirming my mental model of what I am about to commit if I git commit right now than my mental model of what will be added if I git add right now.
If I didn’t already have that muscle memory I might try to switch to git add -v . which would tell me what files it added. I’d argue that a sane git would just output git status after a git add operation.
But also a sane git would have a more logical command than git rm —cached to unstage a file. Like git unstage perhaps.
No, ”git add .” is not easily reverted, there’s no git sub command for de-adding files from the staging area. You have to copy the whole folder (hope you have enough disk space), checking out an older commit (hard), and copy specific files from the copied folder. Pita.
This is actually a general problem with git and most cli tools, where it would be possible and useful to undo an action, but the tool developer cannot be bothered to implement such time-saving feature.
If your issue is that if you already have some changes to some files staged, and you have made subsequent changes to your working directory, if you git add . then it will not be possible to revert the cache to the state it was in before… well, yes, but there’s an easy way to checkpoint the state of the staged cache: git commit.
But to be clear: I’m the kind of person who runs git add .; that means I’m not maintaining a secret hidden third set of changes in the cache. I’m making changes in my working directory, and when those changes are in the shape I want them to be, I am staging all of those changes so I can commit all of those changes. If git add . overwrites a previous state of cached files, that’s fine - if I didn’t commit them I don’t want them.
Committing a codebase state that only exists in the cache and in your mind, on which you haven’t therefore run any build or test or linting tools because that precise set of changes has never existed in isolation in your codebase strikes me as requiring far too much mental powerlifting.
I’m far more interested in confirming my mental model of what I am about to commit if I git commit right now than my mental model of what will be added if I git add right now.
If I didn’t already have that muscle memory I might try to switch to git add -v . which would tell me what files it added. I’d argue that a sane git would just output git status after a git add operation.
But also a sane git would have a more logical command than git rm —cached to unstage a file. Like git unstage perhaps.