From 56628986c058474629248d3100019d02722700b8 Mon Sep 17 00:00:00 2001
From: licihua <licihua@huawei.com>
Date: Sat, 29 May 2021 19:17:38 +0800
Subject: [PATCH] backport upstream patch

(cherry picked from commit b6006973d1cff499ed333921e7c57988c1fe17d2)
---
 backport-bash-5.0-patch18.patch | 39 +++++++++++++++++++++++++++++++++
 bash.spec                       |  9 +++++++-
 2 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 backport-bash-5.0-patch18.patch

diff --git a/backport-bash-5.0-patch18.patch b/backport-bash-5.0-patch18.patch
new file mode 100644
index 0000000..0b755ef
--- /dev/null
+++ b/backport-bash-5.0-patch18.patch
@@ -0,0 +1,39 @@
+From 36f2c406ff27995392a9247dfa90672fdaf7dc43 Mon Sep 17 00:00:00 2001
+From: Chet Ramey <chet.ramey@case.edu>
+Date: Fri, 10 Jul 2020 11:29:25 -0400
+Subject: [PATCH] Bash-5.0 patch 18: fix quoted null string removal when using
+ shell word expansion pattern operators
+
+---
+ patchlevel.h | 2 +-
+ subst.c      | 2 ++
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/patchlevel.h b/patchlevel.h
+index 98e714da..f0ee56e4 100644
+--- a/patchlevel.h
++++ b/patchlevel.h
+@@ -25,6 +25,6 @@
+    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
+    looks for to find the patch level (for the sccs version string). */
+ 
+-#define PATCHLEVEL 17
++#define PATCHLEVEL 18
+ 
+ #endif /* _PATCHLEVEL_H_ */
+diff --git a/subst.c b/subst.c
+index 8884b487..843c9d39 100644
+--- a/subst.c
++++ b/subst.c
+@@ -5112,6 +5112,8 @@ getpattern (value, quoted, expandpat)
+ 				      (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) ? Q_PATQUOTE : quoted,
+ 				      (int *)NULL, (int *)NULL)
+ 	     : (WORD_LIST *)0;
++  if (l)
++    word_list_remove_quoted_nulls (l);
+   pat = string_list (l);
+   dispose_words (l);
+   if (pat)
+-- 
+2.26.2
+
diff --git a/bash.spec b/bash.spec
index eb0a5bb..cba07e4 100644
--- a/bash.spec
+++ b/bash.spec
@@ -1,6 +1,6 @@
 Name:     bash
 Version:  5.0
-Release:  16
+Release:  17
 Summary:  It is the Bourne Again Shell
 License:  GPLv3
 URL:      https://www.gnu.org/software/bash
@@ -28,6 +28,7 @@ Patch14: bash-5.0-patch14.patch
 Patch15: bash-5.0-patch15.patch
 Patch16: bash-5.0-patch16.patch
 Patch17: bash-5.0-patch17.patch
+Patch18: backport-bash-5.0-patch18.patch
 
 
 
@@ -131,6 +132,12 @@ make check
 %exclude %{_infodir}/dir
 
 %changelog
+* Sat May 29 2021 licihua<licihua@huawei.com> - 5.0-17
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC: fix quoted null string removal when using shell word expansion pattern operators
+
 * Thu Mar 30 2021 shenyangyang<shenyangyang4@huawei.com> - 5.0-16
 - Type:bugfix
 - ID:NA
-- 
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