diff --git a/build-compare.changes b/build-compare.changes
index fcc8443..4659593 100644
--- a/build-compare.changes
+++ b/build-compare.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Fri May 29 19:20:21 UTC 2020 - olaf@aepfle.de
+
+- Remove usage of readarray to remain compatible with bash3
+
+-------------------------------------------------------------------
+Fri May 29 07:30:51 UTC 2020 - olaf@aepfle.de
+
+- Colltect a list of known rpm tags and use it to build the
+  queryformat string for the tags listed below (bsc#1172232)
+  conflict obsolete oldsuggests provide recommend require suggest supplement
+
 -------------------------------------------------------------------
 Thu May 14 07:07:07 UTC 2020 - olaf@aepfle.de
 
diff --git a/build-compare.spec b/build-compare.spec
index af4c85a..7e57d87 100644
--- a/build-compare.spec
+++ b/build-compare.spec
@@ -21,7 +21,7 @@ Summary:        Build Result Compare Script
 License:        GPL-2.0+
 Group:          Development/Tools/Building
 Url:            https://github.com/openSUSE/build-compare
-Version:        20200514T095116.be3487c
+Version:        20200529T212652.102d844
 Release:        0
 Source1:        COPYING
 Source2:        same-build-result.sh
diff --git a/functions.sh b/functions.sh
index 34f3cb1..3dd8134 100644
--- a/functions.sh
+++ b/functions.sh
@@ -10,36 +10,59 @@
 
 RPM="rpm -qp --nodigest --nosignature"
 
+declare -a rpm_querytags
+collect_rpm_querytags() {
+  rpm_querytags=( $(rpm --querytags) )
+}
+# returns 0 if tag is known, returns 1 if unknown
+rpmtag_known() {
+  local needle="\<${1}\>"
+  local haystack="${rpm_querytags[@]}"
+  [[ "${haystack}" =~ ${needle} ]]
+  return $?
+}
+
 set_rpm_meta_global_variables() {
 
   local pkg=$1
   local rpm_tags=
   local out=`mktemp`
+  local t v qt
+  local -a type variant list
 
 # Name, Version, Release
 QF_NAME="%{NAME}"
 QF_VER_REL="%{VERSION}-%{RELEASE}"
 QF_NAME_VER_REL="%{NAME}-%{VERSION}-%{RELEASE}"
 
-# provides destroy this because at least the self-provide includes the
-# -buildnumber :-(
-QF_PROVIDES="[%{PROVIDENAME} %{PROVIDEFLAGS} %{PROVIDEVERSION}\\n]\\n"
-QF_PROVIDES="${QF_PROVIDES}[%{REQUIRENAME} %{REQUIREFLAGS} %{REQUIREVERSION}\\n]\\n"
-QF_PROVIDES="${QF_PROVIDES}[%{CONFLICTNAME} %{CONFLICTFLAGS} %{CONFLICTVERSION}\\n]\\n"
-QF_PROVIDES="${QF_PROVIDES}[%{OBSOLETENAME} %{OBSOLETEFLAGS} %{OBSOLETEVERSION}\\n]\\n"
-
-rpm_tags="%{RECOMMENDNAME} %{RECOMMENDFLAGS} %{RECOMMENDVERSION}"
-check_header "%{NAME} ${rpm_tags}" > "${out}"
-if test -s "${out}"
-then
-  QF_PROVIDES="${QF_PROVIDES}[${rpm_tags}\\n]\\n"
-fi
-rpm_tags="%{SUPPLEMENTNAME} %{SUPPLEMENTFLAGS} %{SUPPLEMENTVERSION}"
-check_header "%{NAME} ${rpm_tags}" > "${out}"
-if test -s "${out}"
-then
-  QF_PROVIDES="${QF_PROVIDES}[${rpm_tags}\\n]\\n"
-fi
+QF_PROVIDES=
+type=(
+  CONFLICT
+  OBSOLETE
+  OLDSUGGESTS
+  PROVIDE
+  RECOMMEND
+  REQUIRE
+  SUGGEST
+  SUPPLEMENT
+)
+variant=(
+  NAME
+  FLAGS
+  VERSION
+)
+for t in "${type[@]}"
+do
+  unset list
+  list=()
+  for v in "${variant[@]}"
+  do
+    qt="${t}${v}"
+    rpmtag_known "${qt}" || continue
+    list+=("%{${qt}}")
+  done
+  QF_PROVIDES+="${t}\\n[${list[@]}\\n]\\n"
+done
 
 # don't look at RELEASE, it contains our build number
 QF_TAGS="%{NAME} %{VERSION} %{EPOCH}\\n"
@@ -54,24 +77,36 @@ QF_TAGS="${QF_TAGS}%{PAYLOADFORMAT} %{PAYLOADCOMPRESSOR} %{PAYLOADFLAGS}\\n"
 # XXX We also need to check the existence (but not the content (!))
 # of SIGGPG (and perhaps the other SIG*)
 # XXX We don't look at triggers
-QF_TAGS="${QF_TAGS}[%{VERIFYSCRIPTPROG} %{VERIFYSCRIPT}]\\n"
 # Only the first ChangeLog entry; should be enough
 QF_TAGS="${QF_TAGS}%{CHANGELOGTIME} %{CHANGELOGNAME} %{CHANGELOGTEXT}\\n"
 
 # scripts, might contain release number
-script_types='
-PRETRANS
-PREIN
-POSTIN
-PREUN
-POSTUN
-POSTTRANS
-VERIFYSCRIPT
-'
 QF_SCRIPT=
-for script_type in ${script_types}
+type=(
+  PRETRANS
+  PREIN
+  POSTIN
+  PREUN
+  POSTUN
+  POSTTRANS
+  VERIFYSCRIPT
+)
+variant=(
+  PROG
+  FLAGS
+  ''
+)
+for t in "${type[@]}"
 do
-  QF_SCRIPT="${QF_SCRIPT}[%{${script_type}PROG} %{${script_type}FLAGS} %{${script_type}}\\n]\\n"
+  unset list
+  list=()
+  for v in "${variant[@]}"
+  do
+    qt="${t}${v}"
+    rpmtag_known "${qt}" || continue
+    list+=("%{${qt}}")
+  done
+  QF_SCRIPT+="${t}\\n[${list[@]}\\n]\\n"
 done
 
 # Now the files. We leave out mtime and size.  For normal files
@@ -241,7 +276,7 @@ function set_regex() {
 # 0 in case of same content
 # 1 in case of errors or difference
 # 2 in case of differences that need further investigation
-# Sets $files with list of files that need further investigation
+# Sets ${files[@]} array with list of files that need further investigation
 function cmp_rpm_meta ()
 {
     local RES
@@ -256,6 +291,7 @@ function cmp_rpm_meta ()
     rpm_meta_old=`mktemp`
     rpm_meta_new=`mktemp`
 
+    collect_rpm_querytags
     set_rpm_meta_global_variables $oldrpm
 
     check_header "$QF_ALL" $oldrpm > $rpm_meta_old
@@ -330,14 +366,19 @@ function cmp_rpm_meta ()
     get_value QF_CHECKSUM $rpm_meta_new | grep -v " 64$" | trim_release_new > $file2
     RES=2
     # done if the same
+    files=()
     echo "comparing file checksum"
     if cmp -s $file1 $file2; then
       RES=0
+    else
+      # Get only files with different MD5sums
+      while read
+      do
+        : "${REPLY}"
+        files+=( "${REPLY}" )
+      done < <(diff -U0 $file1 $file2 | sed -E -n -e '/^-\//{s/^-//;s/ [0-9a-f]+ [0-9]+$//;p}')
     fi
 
-    # Get only files with different MD5sums
-    files=`diff -U0 $file1 $file2 | fgrep -v +++ | grep ^+ | cut -b2- | sed -E -e 's/ [0-9a-f]+ [0-9]+$//'`
-
     if test -n "$sh"; then
       echo "creating rename script"
       # Create a temporary helper script to rename files/dirs with release in it
diff --git a/pkg-diff.sh b/pkg-diff.sh
index ead49f5..16285f2 100644
--- a/pkg-diff.sh
+++ b/pkg-diff.sh
@@ -761,6 +761,7 @@ compare_archive()
   local f
   local -a content
   local -i ret=1
+  local -a filelist
 
   "${handler}" 'f' "${file}" || return 1
 
@@ -783,8 +784,12 @@ compare_archive()
         "${handler}" 'x' "${new}" || return 1
         popd > /dev/null
       fi
-      readarray -t content < 'cn'
-      for f in "${content[@]}"
+      while read
+      do
+        : "${REPLY}"
+        filelist+=( "${REPLY}" )
+      done < 'cn'
+      for f in "${filelist[@]}"
       do
         if ! check_single_file "${file}/${f}"
         then
@@ -1157,6 +1162,10 @@ fi
 echo "Comparing `basename $oldpkg` to `basename $newpkg`"
 
 case $oldpkg in
+  *.deb|*.ipk)
+    : cmp_deb_meta missing
+    RES=0
+  ;;
   *.rpm)
     cmp_rpm_meta "$rename_script" "$oldpkg" "$newpkg"
     RES=$?
@@ -1192,18 +1201,15 @@ unpackage $newpkg $dir/new
 case $oldpkg in
   *.deb|*.ipk)
     adjust_controlfile $dir/old $dir/new
+    files=()
+    while read
+    do
+      : "${REPLY}"
+      files+=( "${REPLY}" )
+    done < <(cd ${dir} ; find old new -type f | sed -e 's/^...//' | sort -u)
   ;;
 esac
 
-# files is set in cmp_rpm_meta for rpms, so if RES is empty we should assume
-# it wasn't an rpm and pick all files for comparison.
-if [ -z $RES ]; then
-  oldfiles=`cd $dir/old; find . -type f`
-  newfiles=`cd $dir/new; find . -type f`
-
-  files=`echo -e "$oldfiles\n$newfiles" | sort -u`
-fi
-
 cd $dir
 bash $rename_script
 
@@ -1218,8 +1224,7 @@ fi
 
 # preserve cmp_rpm_meta result for check_all runs
 ret=$RES
-readarray -t filesarray <<<"$files"
-for file in "${filesarray[@]}"; do
+for file in "${files[@]}"; do
    if ! check_single_file "$file"; then
        ret=1
        if test -z "$check_all"; then
diff --git a/srpm-check.sh b/srpm-check.sh
index baca277..10880b5 100644
--- a/srpm-check.sh
+++ b/srpm-check.sh
@@ -87,7 +87,7 @@ check_single_file()
 }
 
 ret=0
-for file in $files; do
+for file in "${files[@]}"; do
    if ! check_single_file $file; then
        ret=1
        if test -z "$check_all"; then