Fix handling case statement in command subsitution

Resolves: #1556867

bash-4.4-case-in-command-subst.patch

@@ -0,0 +1,18 @@
+diff --git a/parse.y b/parse.y
+--- a/parse.y
++++ b/parse.y
+@@ -4011,11 +4011,13 @@ eof_error:
+ 		  tflags |= LEX_RESWDOK;
+ 		  lex_rwlen = 0;
+ 		}
+-	       else
++	       else if (shellmeta (ch) == 0)
+ 		{
+ 		  tflags &= ~LEX_RESWDOK;
+ /*itrace("parse_comsub:%d: found `%.4s', lex_reswdok -> 0", line_number, ret+retind-4);*/
+ 		}
++	      else	/* can't be in a reserved word any more */
++	        lex_rwlen = 0;
+ 	    }
+ 	  else if MBTEST((tflags & LEX_CKCOMMENT) && ch == '#' && (lex_rwlen == 0 || ((tflags & LEX_INWORD) && lex_wlen == 0)))
+ 	    ;	/* don't modify LEX_RESWDOK if we're starting a comment */

bash.spec

@@ -7,7 +7,7 @@
 Version: %{baseversion}%{patchleveltag}
 Name: bash
 Summary: The GNU Bourne Again shell
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: GPLv3+
 Url: https://www.gnu.org/software/bash
 Source0: https://ftp.gnu.org/gnu/bash/bash-%{baseversion}.tar.gz
@@ -89,6 +89,10 @@ Patch129: bash-4.4-assignment-error.patch
 # This should be dropped while rebasing to bash-4.5
 Patch130: bash-4.5-test-modification-time.patch
 
+# 1556867 - case in a for loop inside subshell causes syntax error
+# This should be dropped while rebasing to bash-4.5
+Patch131: bash-4.4-case-in-command-subst.patch
+
 BuildRequires: texinfo bison
 BuildRequires: ncurses-devel
 BuildRequires: autoconf, gettext
@@ -312,6 +316,10 @@ end
 %{_libdir}/pkgconfig/%{name}.pc
 
 %changelog
+* Thu Mar 15 2018 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-2
+- Fix handling case statement in command subsitution
+  Resolves: #1556867
+
 * Mon Feb 12 2018 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-1
 - Update to bash-4.4 patchlevel 19
   Resolves: #1540383