什么是“*。jpg binary -delta”在.gitattributes文件中做？ [英] What does "*.jpg binary -delta" do in the .gitattributes file?

问题描述

此主题建议将

*.jpg binary -delta

存放在 .gitattribute 文件中，但我不确定它的作用。我无法找到git的'-delta'标志的任何示例。

in the .gitattribute file for repos in git but I am not sure what it does. I cannot find any examples of the '-delta' flag for git.

目的是显然加快大文件的提交或推送时间。 b $ b

The purpose is to apparently speed up commit or push times for larger files.

推荐答案

包装对象

That could be related to:

delta

Delta属性增量设置为false的路径不会尝试增量压缩。

Delta compression will not be attempted for blobs for paths with the attribute delta set to false.

git二进制差异算法（delta存储）是否标准化？。

这不是由默认的二进制文件设置的，因为：

That isn't set by default of binary files because:

我们最初的目标受众是使用git作为源代码控制系统。

Jeff Ki ng添加：

Jeff King adds:

我在我的一个仓库中使用delta jpgs。如果exif元数据更改但图像数据不更改则非常有用。我假设你可以对其他具有压缩和未压缩部分的格式进行相同的处理（我也使用视频容器进行处理）。我认为尝试使用delta gzip'd或bzip'd内容是没有意义的。

I delta jpgs in one of my repositories. It is useful if the exif metadata changes but the image data does not. I assume you could do the same with other formats which have compressed and uncompressed portions (I also do it with video containers). I don't think it would ever make sense to try to delta gzip'd or bzip'd contents.

我也不使用二进制，因为我使用自定义比较驱动程序来代替（二元
意味着 -diff ）。

I also don't use "binary", as I use a custom diff driver instead (binary implies "-diff").

至于什么应该是默认的，直到现在默认一直是默认情况下没有定义gitattributes。这很好，因为它很容易理解; git不关心文件名，除非您告诉它。

不利的一面是它可能无法以最佳方式执行某些不常见的工作负载，无需额外配置。

As for what should be the default, until now the default has always been that no gitattributes are defined by default. This is nice because it's simple to understand; git doesn't care about filenames unless you tell it to.
The downside obviously is that it may not perform optimally for some unusual workloads without extra configuration.

手册页提及：



The .gitattributes man page mentions:

将文件标记为binary是在.gitattributes文件中取消设置diff属性：

The simplest way to mark a file as binary is to unset the diff attribute in the .gitattributes file:

*.ps -diff

这会导致Git产生不同的二进制文件（或二进制补丁，如果启用了二进制补丁），而不是常规差异。

This will cause Git to generate Binary files differ (or a binary patch, if binary patches are enabled) instead of a regular diff.

所以，是设置二进制属性也会取消文本和 diff 属性的设置，如上所述。但杰夫说他在他的情况下只使用 -diff ，这是足以让该文件成为二进制文件。

So, yes "Setting the "binary" attribute also unsets the "text" and "diff" attributes as above", but Jeff was saying it was using only -diff in his case, which was enough to lark the file as binary.

这篇关于什么是“*。jpg binary -delta”在.gitattributes文件中做？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！