tree d337ef464efc41b9a293bbf5b6e617f81dc9b14e
parent 296d4a94e7231a1d57356889f51bff57a1a3c5a1
author Junio C Hamano <gitster@pobox.com> 1608168433 -0800
committer Junio C Hamano <gitster@pobox.com> 1608168806 -0800

diff: correct interaction between --exit-code and -I<pattern>

Just like "git diff -w --exit-code" should exit with 0 when ignoring
whitespace differences results in no changes shown, if ignoring
certain changes with "git diff -I<pattern> --exit-code" result in an
empty patch, we should exit with 0.

The test suite did not cover the interaction between "--exit-code"
and "-w"; add one while adding a new test for "--exit-code" + "-I".

Signed-off-by: Junio C Hamano <gitster@pobox.com>