Thorsten Glaser <t.gla...@tarent.de> writes:

> On Thu, 14 Jul 2016, Junio C Hamano wrote:
>
>> Can't this become simpler, e.g.
>> 
>>      if ! git diff-tree --quiet "$old" "$new" -- "$subdir"
>
> Thought about diff-tree, but additions are permitted,

        diff-tree -r --diff-filter=a "$old" "$new" -- "$subdir" 

or something like that?

> and diffing the actual file content has overhead too.

It is why exactly "diff-tree" is desired here, as you do not have to
diff actual file at all.
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