When I did git stash push <path/to/file> it created stash@{0} for it.
Reusing the same command with different file creates another stash -> stash@{1}.
I have other files that logically belong to stash@{0}.
Can I somehow push file to existing stash?
If you mean akin to git commit --amend, I am afraid you are out of luck, but would it be acceptable for your use case, to:
git stash pop
and then
git stash push ORIGINAL_FILES MORE_FILES
to have the files grouped?
As per git docs,
<stash>This option is only valid for apply, branch, drop, pop, show commands.
A reference of the form
stash@{<revision>}. When no<stash>is given, the latest stash is assumed (that is,stash@{0}).
So you can't do this directly using push command of git stash.
Probably use this git stash push <path/to/file1> <path/to/file2> ... next time as push accepts multiple pathspecs (filenames)
