-touch -- foo bar baz 'space embedded' 'tab embedded' 'newline
-embedded' -q
-git-add -- foo bar baz 'space embedded' 'tab embedded' 'newline
-embedded' -q
-git-commit -m "add files"
+touch -- foo bar baz 'space embedded' -q
+git-add -- foo bar baz 'space embedded' -q
+git-commit -m "add normal files"
+test_tabs=y
+if touch -- 'tab embedded' 'newline
+embedded'
+then
+git-add -- 'tab embedded' 'newline
+embedded'
+git-commit -m "add files with tabs and newlines"
+else
+ say 'Your filesystem does not allow tabs in filenames.'
+ test_tabs=n
+fi
+
+# Later we will try removing an unremovable path to make sure
+# git-rm barfs, but if the test is run as root that cannot be
+# arranged.
+: >test-file
+chmod a-w .
+rm -f test-file
+test -f test-file && test_failed_remove=y
+chmod 775 .
+rm -f test-file