如何区分并显示2个长字符串的精确差异

Question

我有2个文件 - a和b。

一

1,"abc","( @docid =""00123"" or @docid =""00456"") AND a_number is not NULL"

B'/ H1>

1,"abc","( @docid =""00123"" or @docid =""00456"") AND @a_number is not NULL"

如何区分这2个文件并仅显示a_number中的部分更改而不是整个字符串？

Answer 1

我喜欢用

$ wdiff a b

# 1,"abc","( @docid =""00123"" or @docid =""00456"") AND [-a_number-] {+@a_number+} is not NULL"