bash Git：按提交后的样子显示文件内容
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Git: Show content of file as it will look like after committing
提问by user123444555621
After reading Git pre-commit hook : changed/added files, the following question arose:
阅读Git pre-commit hook : changed/ added files 后，出现了以下问题：
Given I have a file with both staged and unstaged changes, how can I display a preview of the file's contents after staging?
鉴于我有一个包含暂存和未暂存更改的文件，如何在暂存后显示文件内容的预览？
Example:
例子：
echo "foo" >> file
git add file
echo "bar" >> file
Wanted output:
想要的输出：
[previous contents of file]
foo
回答by user1686
Use the :prefix to access objects in the current index (staged but not yet commited).
使用:前缀访问当前索引中的对象（暂存但尚未提交）。
git show :file
See gitrevisions(which uses the term 'stage 0' for the "normal" index contents):
请参阅gitrevisions（使用术语“阶段 0”表示“正常”索引内容）：
:[<n>:]<path>, e.g. :0:README, :READMEA colon, optionally followed by a stage number (0 to 3) and a colon, followed by a path, names a blob object in the index at the given path. A missing stage number (and the colon that follows it) names a stage 0 entry. During a merge, stage 1 is the common ancestor, stage 2 is the target branch's version (typically the current branch), and stage 3 is the version from the branch which is being merged.
:[<n>:]<path>, e.g. :0:README, :README一个冒号，可选地后跟一个阶段编号（0 到 3）和一个冒号，后跟一个路径，在给定路径的索引中命名一个 blob 对象。缺少的阶段编号（以及它后面的冒号）命名为阶段 0 条目。在合并期间，阶段 1 是共同祖先，阶段 2 是目标分支的版本（通常是当前分支），阶段 3 是正在合并的分支的版本。
回答by Mark Longair
Update: the answer from grawityhas a much neater solution
This recipe is from jleedev's answer to another question:
这个食谱来自jleedev 对另一个问题的回答：
git cat-file blob $(git ls-files -s file | awk '{print }')
You might want to create a git aliasfor that if you're going to use it often.
如果您要经常使用它，您可能想为此创建一个git 别名。
回答by Tollef Fog Heen
You can do git diff --cached, but this isn't exactly what you want.
您可以执行 git diff --cached，但这并不是您想要的。
git grep -h --cached ^ -- file
git grep -h --cached ^ -- file
works for me.
对我来说有效。
回答by Daniel B?hmer
Just have a look at the top answer for this question: How do I show the changes which have been staged?
只需查看此问题的最佳答案：如何显示已上演的更改？
The --cachedoption is what you want.
该--cached选项是您想要的。
