How to find diff of two files but only show lines which have common starting string?
For example, file1:
start1 1234
1234
start2 1234
file2:
start1 ABCD
ABCD
start2 ABCD
And the diff should be just:
> start1 1234
---
< start1 ABCD
> start2 1234
----
< start2 ABCD
or something like this:
start1
start2
You would need to script/code it yourself, because a classic diff (or git diff --no-index which can be used with any two files outside of any Git repository) would display only hunks.
See "In the context of git (and diff), what is a “hunk”": that would display more than just the different lines.
diff finds sequences of lines common to both files, interspersed with groups of differing lines called hunks.
