如何自动为* .tex文件而不是其他文件使用git diff --word-diff选项? [英] How to automatically use git diff --word-diff option for *.tex files but not others?

问题描述

是否可以将--word-diff用于LaTeX文件(* .tex)，并保持其他文件类型的标准行差异?

Is there a way to use --word-diff for LaTeX files (*.tex) and keep the standard line difference for other file types?

我要实现的是使用git diff命令，并让git自动显示* .tex文件上的单词差异，而无需每次都编写git diff --word-diff.同时，我希望git显示其他文件类型的标准行差异.有可能吗?

What I want to achieve is to use git diff command and let git show the word difference on *.tex files automatically without a need to write git diff --word-diff each time. At the same time I want git to show the standard line difference for other file types. Is that possible?

推荐答案

请参见 gitattributes文档的生成差异文本部分.但是，要为*.tex文件自动获取单词差异 just ，必须在此处以及其他一些文档中将其与其他信息放在一起.

See the Generating diff text section of the gitattributes documentation. However, to automatically get word diffs just for *.tex files, you must put this together with additional information there and in some other documents.

此外，至少在我当前的git版本(2.7.4)中，tex文件的内置正则表达式已损坏:

Also, at least in my current git version (2.7.4), the built-in regex for tex files is broken:

fatal: Invalid regular expression: \\[a-zA-Z@]+|\\.|[a-zA-Z0-9<80>-<FF>]+|[^[:sp

所以我必须更加努力地解决这个问题.

so I have to work around that even harder.

将所有这些放在一起:

$ cat .gitattributes
*.tex   diff=tex
$ git config --get diff.tex.wordregex
\\[a-zA-Z]+|[{}]|\\.|[^\{}[:space:]]+

(此正则表达式直接来自gitattributes文档)，再加上一个配置项和一个驱动程序:

(this regex is straight from the gitattributes documentation), plus one more configuration item and one driver:

$ git config --get diff.tex.command
git-word-diff-driver
$ cat ~/scripts/git-word-diff-driver
#! /bin/sh
#
# args are:
# path old-file old-hex old-mode new-file new-hex new-mode
git diff --word-diff $2 $5
exit 0

(此脚本可能有所改进，但它显示了总体思路.由于文件不同，如果文件不同，git diff的出口为非零值，所以需要exit 0.幸运的是，无需进行无休止的保护.进行递归，因为git diff --word-diff path1 path2不会重新调用gitattributes驱动程序.)

(This script might be improved, but it shows the general idea. The exit 0 is required since git diff has a nonzero exit if the files differ, as they tend to. Fortunately there is no need to protect against endless recursion since git diff --word-diff path1 path2 does not re-invoke the gitattributes driver.)

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