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gitでfooとfoo/barというブランチは同時には作成できない

Last updated at Posted at 2013-03-05
$ git co -b foo
$ git co -b foo/bar
error: unable to resolve reference refs/heads/foo/bar: Not a directory
fatal: Failed to lock ref for update: Not a directory

ブランチを作ると,そのブランチの指すコミットのsha1を保存するためにrefs/heads/BRANCH_NAMEというファイルを作る.このときブランチ名に/が入っているとディレクトリを作成してからファイルを作る.
そのためgit co -b foo/bar時にfooディレクトリを作ろうとするが,既にファイルが存在するためエラーとなる.

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