在 git diff 中自定义标题

发布于 2024-09-13 02:23:40 字数 211 浏览 4 评论 0原文

当使用 git diff 查看差异时，每个更改都以如下行开头：

@@ -28,41 +20,10 @@ namespace ConsoleApplication1

对于 C，最后部分非常具有描述性 - 例如，它显示了发生更改的函数。但对于 C#，它只显示名称空间，这不是很有用。我认为这是因为它显示最后一行没有缩进。有没有办法如何配置这个？

原文

When viewing a diff using git diff, each change starts with line like:

@@ -28,41 +20,10 @@ namespace ConsoleApplication1

For C, the final part is quite descriptive – it shows for example the function in which the change occurred. But for C#, it only ever shows the namespace, which isn't very useful. I think that's because it shows last line that isn't indented. Is there a way how to configure this?

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虚拟世界 2024-09-20 02:23:40

我找到了它，该行称为 hunk header ，文档说明了如何自定义它：

定义自定义块头
文本差异输出中的每组更改（称为“块”）都以以下形式的行作为前缀：
<前><代码>@@ -k,l +n,m @@ 文本
这称为大块标头。 “TEXT”部分默认是以字母、下划线或美元符号开头的行；这与 GNU diff -p 输出使用的内容匹配。但这种默认选择并不适合某些内容，您可以使用自定义模式进行选择。
首先，在 .gitattributes 中，您将为路径分配 diff 属性。
<前><代码>*.tex diff=tex
然后，您将定义“diff.tex.xfuncname”配置来指定与您希望显示为块标头“TEXT”的行相匹配的正则表达式。在您的 $GIT_DIR/config 文件（或 $HOME/.gitconfig 文件）中添加一个部分，如下所示：
<前><代码>[diff“tex”]
xfuncname = "^(\\\\(sub)*section\\{.*)$"
注意。单层反斜杠会被配置文件解析器吃掉，因此您需要将反斜杠加倍；上面的模式选择以反斜杠开头的行，以及零次或多次出现的 sub，后跟节，后跟左大括号，直到行尾。

I have found it, the line is called hunk header and the documentation says how to customize it:

Defining a custom hunk-header
Each group of changes (called a "hunk") in the textual diff output is prefixed with a line of the form:
@@ -k,l +n,m @@ TEXT
This is called a hunk header. The "TEXT" portion is by default a line that begins with an alphabet, an underscore or a dollar sign; this matches what GNU diff -p output uses. This default selection however is not suited for some contents, and you can use a customized pattern to make a selection.
First, in .gitattributes, you would assign the diff attribute for paths.
*.tex   diff=tex
Then, you would define a "diff.tex.xfuncname" configuration to specify a regular expression that matches a line that you would want to appear as the hunk header "TEXT". Add a section to your $GIT_DIR/config file (or $HOME/.gitconfig file) like this:
[diff "tex"]
        xfuncname = "^(\\\\(sub)*section\\{.*)$"
Note. A single level of backslashes are eaten by the configuration file parser, so you would need to double the backslashes; the pattern above picks a line that begins with a backslash, and zero or more occurrences of sub followed by section followed by open brace, to the end of line.