Blame SOURCES/bash-4.4-case-in-command-subst.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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@@ -4011,11 +4011,13 @@ eof_error:
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 		  tflags |= LEX_RESWDOK;
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 		  lex_rwlen = 0;
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 		}
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-	       else
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+	       else if (shellmeta (ch) == 0)
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 		{
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 		  tflags &= ~LEX_RESWDOK;
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 /*itrace("parse_comsub:%d: found `%.4s', lex_reswdok -> 0", line_number, ret+retind-4);*/
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 		}
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+	      else	/* can't be in a reserved word any more */
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+	        lex_rwlen = 0;
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 	    }
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 	  else if MBTEST((tflags & LEX_CKCOMMENT) && ch == '#' && (lex_rwlen == 0 || ((tflags & LEX_INWORD) && lex_wlen == 0)))
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 	    ;	/* don't modify LEX_RESWDOK if we're starting a comment */