IIUC, the --abbrev-commit is unnecessary there, --oneline already does it. Makes the incantation possible to remember and type on a foreign console: "git log --graph --oneline --decorate --all"
edit: yep, per git help log:
--oneline
This is a shorthand for "--pretty=oneline --abbrev-commit"
used together.
edit: yep, per git help log: