Is git-svn dcommit after merging in git dangerous?

Question

My motivation for trying out git-svn is the effortless merging and branching. Then I noticed that man git-svn(1) says:

Running git-merge or git-pull

Answer 1

A safe way to merge svn branches in git is to use git merge --squash. This will create a single commit and stop for you to add a message.

Let's say you have a topic svn branch, called svn-branch.

git svn fetch
git checkout remotes/trunk -b big-merge
git merge --squash svn-branch

at this point you have all the changes from the svn-branch squashed into one commit waiting in the index

git commit