Currently, I got following alias
[alias]
comment = commit -m
It works fine for
git comment 'Export env'
But wanted to make it work without quotes
[alias]
comment = !"git commit -m ${*}"
This runs into errors
$ git comment Export env
error: pathspec 'env' did not match any file(s) known to git
error: pathspec 'Export' did not match any file(s) known to git
error: pathspec 'env' did not match any file(s) known to git
Why do things in complex ways when the answer for question "How to write an alias that accepts parameters" is quite well-known — use a shell function inside an alias:
git config alias.comment '!f() { git commit -m "$*"; }; f'
Examples (with echo git commit "$*"):
$ git comment test
git commit -m test
$ git comment foo bar
git commit -m foo bar
It's not obvious from the echo output it is exactly one parameter "foo bar" but it is.