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I have two big trees, which I want to compare. Some of the files in the tree differ just because one has newline at the end, and the other file lacks this newline. I want to ignore this fact. I have tried calling diff like this:

diff --ignore-all-space -r <dir1> <dir2>

And this is working. My problem is that it also ignores other differences (space-related), which may be important.

In summary: I just want to ignore the newline at EOF. Is this possible with diff?

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Pipe the output of diff to a grep command that drops the message you don't want to see.

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not good. diff -r exists with result != 0 if I do not add --ignore-all-space. To be clear: I want diff to ignore newlines at EOF, and only at EOF. And I want it to report a result which matches this criteria. That is, if files in the tree differ only on the newline at EOF, that must not be considered a difference, and thus diff must return 0. – gonvaled Feb 11 at 12:10
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