1 files changed, 7 insertions, 6 deletions

diff --git a/lib/mysql-functions b/lib/mysql-functions
index 6a6a1e7..af2c3ba 100755
--- a/lib/mysql-functions
+++ b/lib/mysql-functions
@@ -2,7 +2,7 @@
 
 # contains functions used to access mysql db
 
-# shellcheck disable=SC2016,SC2039,SC2119,SC2120
+# shellcheck disable=SC2016,SC2039,SC2119,SC2120,SC3043
 
 if [ -z "${base_dir}" ]; then
   # just to make shellcheck happy
@@ -35,7 +35,7 @@ mysql_run_query() {
   local number
 
   file_name_extra=''
-  if [ "x$1" = 'xunimportant' ]; then
+  if [ "$1" = 'unimportant' ]; then
     shift
     file_name_extra='unimportant_'
   elif [ -s "${work_dir}/build-master-sanity" ]; then
@@ -47,7 +47,7 @@ mysql_run_query() {
   query_stdout="${query_stdin%.stdin}.stdout"
   query_stderr="${query_stdin%.stdin}.stderr"
   cat > "${query_stdin}"
-  for _ in {1..10}; do
+  for _ in $(seq 10); do
     if [ -f "${query_stdout}" ]; then
       wait_some_time 10 10
     fi
@@ -221,7 +221,8 @@ mysql_generate_package_metadata() {
     mod_git_revision="$4"
     repository="$5"
 
-    if [[ "${current_repository_id}" = *[!0-9]* ]]; then
+    if printf '%s\n' "${current_repository_id}" \
+    | grep -q '[^0-9]'; then
       >&2 printf 'mysql_generate_package_metadata(): invalid current_repository_id="%s".\n' \
         "${current_repository_id}"
       exit 2
@@ -898,7 +899,7 @@ mysql_cleanup() {
   local operator
   if [ "$#" = '0' ]; then
     operator='DELETE'
-  elif [ "$#" = '1' ] && [ "x$1" = 'xdry' ]; then
+  elif [ "$#" = '1' ] && [ "$1" = 'dry' ]; then
     operator='SELECT COUNT(1)'
   else
     >&2 echo 'Unknown parameter'
@@ -1558,7 +1559,7 @@ mysql_sort_versions() {
   ( # new shell is intentional
     tmp_file=$(mktemp 'tmp.mysql_sort_versions.XXXXXXXXXX' --tmpdir)
     trap 'rm "${tmp_file}"' EXIT
-    if [ "x$1" != 'x-f' ] && \
+    if [ "$1" != '-f' ] && \
       {
         printf 'SELECT'
         printf ' COUNT(1)'