如何使用GNU diff差异utf-16文件？ [英] How do I diff utf-16 files with GNU diff?

问题描述

GNU差异似乎不够智能，无法检测和处理UTF-16文件，这让我感到惊讶。我是否缺少明显的命令行选项？有没有好的选择？

GNU diff doesn't seem to be smart enough to detect and handle UTF-16 files, which surprises me. Am I missing an obvious command-line option? Is there a good alternative?

推荐答案

从GNU diff文档中：

From the GNU diff documentation:

处理多字节和可变宽度
字符

Handling Multibyte and Varying-Width Characters

diff，diff3和sdiff将输入的每行
视为一串单字节
字符。在某些情况下，这可能会误处理
多字节字符。
例如，当要求忽略
空格时，diff不会正确忽略
a多字节空格字符。

diff, diff3 and sdiff treat each line of input as a string of unibyte characters. This can mishandle multibyte characters in some cases. For example, when asked to ignore spaces, diff does not properly ignore a multibyte space character.

此外，diff当前假定每个
字节为一列宽，并且此
假设在某些
语言环境中是不正确的，例如，使用UTF-8
编码的语言环境。这会导致
出现问题-b或
diff的-y或--by-by-side选项。

Also, diff currently assumes that each byte is one column wide, and this assumption is incorrect in some locales, e.g., locales that use UTF-8 encoding. This causes problems with the -y or --side-by-side option of diff.

这些问题必须得到解决
，而不会过度影响实用程序在
单字节环境中的
性能。

These problems need to be fixed without unduly affecting the performance of the utilities in unibyte environments.

IBM GNU / Linux技术中心
国际化团队已提出
一些补丁程序以支持
国际化差异
http://oss.software.ibm.com/developer/opensource/linux/patches/i18n/diffutils-2.7.2-i18n-0.1.patch .gz 。
不幸的是，这些补丁是
不完整的，并且是较早版本的diff的
，因此在此区域
需要做更多的工作。

The IBM GNU/Linux Technology Center Internationalization Team has proposed some patches to support internationalized diff http://oss.software.ibm.com/developer/opensource/linux/patches/i18n/diffutils-2.7.2-i18n-0.1.patch.gz. Unfortunately, these patches are incomplete and are to an older version of diff, so more work needs to be done in this area.

我从没意识到自己。

如果非自由，非命令行工具可以完成这项工作，同时仍在寻找免费的命令行工具：

It looks like Guiffy could to the job if a nonfree, non-command line tool will do the job, still looking for a freeware command line tool:

http://www.guiffy.com/Diff-Tool.html

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