为什么git flow会快速转发我的功能分支合并？

我开始使用和学习git flow。通过阅读本文，它指出每个功能分支合并都将使用--no ff参数来

git merge

，考虑到功能分支的用途，这是非常有意义的

问题是，我正在一个空的回购中测试git流，我不明白为什么使用命令

git flow feature finish“feature name”

从功能分支进行的合并总是使用快进

---

我无法想象为什么要快速推进功能分支。我在这里遗漏了什么吗？

有一种情况，

git-flow

没有使用

——没有ff

确实：
:

应该是：

By design, git-flow uses the --no-ff option when merging  
in order to record that the commits belong together historically. 
However, when the feature branch contains only a single commit,
the extra merge commit does not add anything and only complicates 
the branch tree needlessly.
So for single-commit branches, fast-forward merges are being made 
as if the commit was done on develop directly.

if [ "$(git rev-list -n2 "$DEVELOP_BRANCH..$BRANCH" | wc -l)" -eq 1 ]; then
    git_do merge --ff "$BRANCH"