[clang] [clang-tools-extra] [clang-query] Allow for trailing comma in matchers (PR #148018)

[Aaron Ballman via cfe-commits]

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@@ -0,0 +1,10 @@
+// RUN: clang-query -c "match \
+// RUN:   functionDecl( \
+// RUN:       hasName( \
+// RUN:           \"foo\", \
+// RUN:       ), \
+// RUN:   ) \
+// RUN: " %s -- | FileCheck %s
+
+// CHECK: trailing-comma.c:10:1: note: "root" binds here
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AaronBallman wrote:

I'd appreciate another test that has two trailing commas, just to be sure we properly diagnose that case. e.g., `\"foo\",, \`

https://github.com/llvm/llvm-project/pull/148018