[llvm] [llvm-lit] Support curly brace syntax in lit internal shell (PR #102830)

[Paul Kirth via llvm-commits]

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@@ -92,14 +92,15 @@ def toShell(self, file, pipefail=False):
 
 
 class Seq:
-    def __init__(self, lhs, op, rhs):
+    def __init__(self, lhs, op, rhs, seq_type):
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ilovepi wrote:

what is the type of `seq_type`? What's it's purpose?

https://github.com/llvm/llvm-project/pull/102830