docs: improve discoverability of exclude pathspecmr/doc-negative-pathspec

The ability to exclude paths with a negative pathspec is not mentioned
in the man pages for git grep and other commands where it might be
useful.

Add an example and a pointer to the pathspec glossary entry in the man
page for git grep to help the user to discover this ability.

Add similar pointers from the git-add and git-status man pages.

Additionally,

- Add a test for the behaviour when multiple exclusions are present.
- Add a test for the ^ alias.
- Improve name of existing test.
- Improve grammar in glossary description of the exclude pathspec.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Manav Rathi <mnvrth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/t/t6132-pathspec-exclude.sh b/t/t6132-pathspec-exclude.sh
index 9dd5cde5fc..eb829fce97 100755
--- a/t/t6132-pathspec-exclude.sh
+++ b/t/t6132-pathspec-exclude.sh
@@ -25,7 +25,7 @@ EOF
 	test_cmp expect actual
 '
 
-test_expect_success 'exclude only no longer errors out' '
+test_expect_success 'exclude only pathspec uses default implicit pathspec' '
 	git log --oneline --format=%s -- . ":(exclude)sub" >expect &&
 	git log --oneline --format=%s -- ":(exclude)sub" >actual &&
 	test_cmp expect actual
@@ -183,4 +183,15 @@ EOF
 	test_cmp expect actual
 '
 
+test_expect_success 'multiple exclusions' '
+	git ls-files -- ":^*/file2" ":^sub2" >actual &&
+	cat <<-\EOF >expect &&
+	file
+	sub/file
+	sub/sub/file
+	sub/sub/sub/file
+	EOF
+	test_cmp expect actual
+'
+
 test_done