[clang-format] fix BreakBeforeBraces.MultiLine with for each macros

Summary:
The MultiLine option in BreakBeforeBraces was only handling standard
control statement, leading to invalid indentation with for each macros:

Previous behavior:

/* invalid: brace should be on the same line */
Q_FOREACH(int a; list)
{
    foo();
}

/* valid */
Q_FOREACH(int longVariable;
          list)
{
    foo();
}

To fix this, simply add the TT_ForEachMacro kind in the list of
recognized control statements for the multiline option.

This is a fix for https://bugs.llvm.org/show_bug.cgi?id=44632

Reviewers: MyDeveloperDay, mitchell-stellar

Reviewed by: mitchell-stellar

Contributed by: vthib

Subscribers: cfe-commits

Tags: #clang, #clang-format, #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D85304

Author: Mitchell Balan

clang/lib/Format/UnwrappedLineFormatter.cpp

@@ -309,7 +309,8 @@ class LineJoiner {
     // Try to merge a control statement block with left brace wrapped
     if (I[1]->First->is(tok::l_brace) &&
         (TheLine->First->isOneOf(tok::kw_if, tok::kw_while, tok::kw_for,
-                                 tok::kw_switch, tok::kw_try, tok::kw_do) ||
+                                 tok::kw_switch, tok::kw_try, tok::kw_do,
+                                 TT_ForEachMacro) ||
          (TheLine->First->is(tok::r_brace) && TheLine->First->Next &&
           TheLine->First->Next->isOneOf(tok::kw_else, tok::kw_catch))) &&
         Style.BraceWrapping.AfterControlStatement ==

clang/unittests/Format/FormatTest.cpp

@@ -1663,6 +1663,20 @@ TEST_F(FormatTest, MultiLineControlStatements) {
             "  foo();\n"
             "}",
             format("for(int i=0;i<10;++i){foo();}", Style));
+  EXPECT_EQ("foreach (int i,\n"
+            "         list)\n"
+            "{\n"
+            "  foo();\n"
+            "}",
+            format("foreach(int i, list){foo();}", Style));
+  Style.ColumnLimit =
+      40; // to concentrate at brace wrapping, not line wrap due to column limit
+  EXPECT_EQ("foreach (int i, list) {\n"
+            "  foo();\n"
+            "}",
+            format("foreach(int i, list){foo();}", Style));
+  Style.ColumnLimit =
+      20; // to concentrate at brace wrapping, not line wrap due to column limit
   EXPECT_EQ("while (foo || bar ||\n"
             "       baz)\n"
             "{\n"