Blame SOURCES/bash-5.0-shellpid-subshell.patch

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diff --git a/parse.y b/parse.y
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--- a/parse.y
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+++ b/parse.y
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@@ -4193,7 +4193,7 @@ eof_error:
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 	  FREE (nestret);
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 	}
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-      if MBTEST(ch == '$')
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+      if MBTEST(ch == '$' && (tflags & LEX_WASDOL) == 0)
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 	tflags |= LEX_WASDOL;
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       else
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 	tflags &= ~LEX_WASDOL;