tests: use [(] instead of \( to avoid warning on py3
From a recent test run of mine:
run-tests.py:1633: DeprecationWarning: invalid escape sequence '\('
This lets us encode the expectation without the badness.
Differential Revision: https://phab.mercurial-scm.org/D3621
--- a/tests/test-unified-test.t Sat May 19 15:15:51 2018 -0400
+++ b/tests/test-unified-test.t Sat May 19 15:47:32 2018 -0400
@@ -84,7 +84,7 @@
foo/bar\r (no-eol) (esc)
#endif
$ printf 'foo/bar\rfoo/bar\r'
- foo.bar\r \(no-eol\) (re) (esc)
+ foo.bar\r [(]no-eol[)] (re) (esc)
foo.bar\r \(no-eol\) (re)
testing hghave