userdiff: better method/property matching for C#

- Support multi-line methods by not requiring closing parenthesis.
- Support multiple generics (comma was missing before).
- Add missing `foreach`, `lock` and  `fixed` keywords to skip over.
- Remove `instanceof` keyword, which isn't C#.
- Also detect non-method keywords not positioned at the start of a line.
- Added tests; none existed before.

The overall strategy is to focus more on what isn't expected for
method/property definitions, instead of what is, but is fully optional.

Signed-off-by: Steven Jeuris <steven.jeuris@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/t/t4018/csharp-exclude-other b/t/t4018/csharp-exclude-other
new file mode 100644
index 0000000000..4d5581cf3e
--- /dev/null
+++ b/t/t4018/csharp-exclude-other
@@ -0,0 +1,18 @@
+class Example
+{
+    string Method(int RIGHT)
+    {
+        lock (this)
+        {
+        }
+        unsafe
+        {
+            byte[] bytes = [1, 2, 3];
+            fixed (byte* pointerToFirst = bytes)
+            {
+            }
+        }
+
+        return "ChangeMe";
+    }
+}