clang-format: Make it very slighly more expensive to wrap between "= {".

This prevents unwanted fallout from r296664. Specifically in proto formatting,
this changed:
  optional Aaaaaaaa aaaaaaaa = 12 [
    (aaa) = aaaa,
    (bbbbbbbbbbbbbbbbbbbbbbbbbb) = {
      aaaaaaaaaaaaaaaaa: true,
      aaaaaaaaaaaaaaaa: true
    }
  ];

Into:
  optional Aaaaaaaa aaaaaaaa = 12 [
    (aaa) = aaaa,
    (bbbbbbbbbbbbbbbbbbbbbbbbbb) =
        {aaaaaaaaaaaaaaaaa: true, aaaaaaaaaaaaaaaa: true}
  ];

Which is considered less readable. Generally, it seems preferable to
format such dict literals as blocks rather than contract them to one
line.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@297696 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/unittests/Format/FormatTestProto.cpp b/unittests/Format/FormatTestProto.cpp
index 41d210ac7c..d174c65a1f 100644
--- a/unittests/Format/FormatTestProto.cpp
+++ b/unittests/Format/FormatTestProto.cpp
@@ -138,6 +138,13 @@ TEST_F(FormatTestProto, MessageFieldAttributes) {
   verifyFormat("optional string test = 1 [default =\n"
                "                              \"test\"\n"
                "                              \"test\"];");
+  verifyFormat("optional Aaaaaaaa aaaaaaaa = 12 [\n"
+               "  (aaa) = aaaa,\n"
+               "  (bbbbbbbbbbbbbbbbbbbbbbbbbb) = {\n"
+               "    aaaaaaaaaaaaaaaaa: true,\n"
+               "    aaaaaaaaaaaaaaaa: true\n"
+               "  }\n"
+               "];");
 }
 
 TEST_F(FormatTestProto, DoesntWrapFileOptions) {