Having difficulty in selecting commit by message instead of hash for –fixup

I was looking for a way to select commits using the commit message instead of the relation from HEAD or the commit hash and found that it was possible, but I cannot get it to work.

I do have a previous commit, which has a commit message that starts with "Enable git rebase –autosquash" (as an example).

$ git add -u
$ git commit --fixup=amend:/'Enable git rebase --autosquash' -m "New message example"
fatal: could not lookup commit /Enable git rebase --autosquash

As I said, there is a commit which has a message which starts with that string. What am I doing wrong here?

>Solution :

You don’t have quite the right syntax.

Recall that:

1. The syntax of the --fixup option is --fixup=[(amend|reword):]<commit>

2. The syntax for specifying a commit by string is :/<string>.

If you replace <commit> in the first rule with the syntax from the second rule, you get:

git commit --fixup=amend::/'Enable git rebase --autosquash'

Note the two colons.