diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 966ab3e894f..1be35793c8c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -9,7 +9,7 @@ repos:
         stages: [commit-msg]
 
   - repo: https://github.com/scop/pre-commit-shfmt
-    rev: v3.5.1-1
+    rev: v3.6.0-1
     hooks:
       - id: shfmt-docker
         types: [text]
diff --git a/bash_completion b/bash_completion
index 283bf4e8171..8ea066f03e3 100644
--- a/bash_completion
+++ b/bash_completion
@@ -716,7 +716,7 @@ _get_cword()
 _get_pword()
 {
     if ((COMP_CWORD >= 1)); then
-        _get_cword "${@:-}" 1
+        _get_cword "${@-}" 1
     fi
 }
 
@@ -1371,9 +1371,9 @@ _available_interfaces()
     local PATH=$PATH:/sbin
 
     COMPREPLY=($({
-        if [[ ${1:-} == -w ]]; then
+        if [[ ${1-} == -w ]]; then
             iwconfig
-        elif [[ ${1:-} == -a ]]; then
+        elif [[ ${1-} == -a ]]; then
             ifconfig || ip -c=never link show up || ip link show up
         else
             ifconfig -a || ip -c=never link show || ip link show
@@ -2226,7 +2226,7 @@ _cd()
 
     # Use standard dir completion if no CDPATH or parameter starts with /,
     # ./ or ../
-    if [[ ! ${CDPATH:-} || $cur == ?(.)?(.)/* ]]; then
+    if [[ ! ${CDPATH-} || $cur == ?(.)?(.)/* ]]; then
         _filedir -d
         return
     fi
@@ -2414,7 +2414,7 @@ complete -F _comp_root_command fakeroot gksu gksudo kdesudo really
 # Return true if the completion should be treated as running as root
 _complete_as_root()
 {
-    [[ $EUID -eq 0 || ${root_command:-} ]]
+    [[ $EUID -eq 0 || ${root_command-} ]]
 }
 
 _longopt()
diff --git a/completions/cvs b/completions/cvs
index 0d694efa15f..729e3abdce6 100644
--- a/completions/cvs
+++ b/completions/cvs
@@ -3,10 +3,10 @@
 _cvs_entries()
 {
     local prefix=${cur%/*}/ IFS=$'\n'
-    [[ -e ${prefix:-}CVS/Entries ]] || prefix=""
-    entries=($(cut -d/ -f2 -s ${prefix:-}CVS/Entries 2>/dev/null))
+    [[ -e ${prefix-}CVS/Entries ]] || prefix=""
+    entries=($(cut -d/ -f2 -s ${prefix-}CVS/Entries 2>/dev/null))
     if [[ $entries ]]; then
-        entries=("${entries[@]/#/${prefix:-}}")
+        entries=("${entries[@]/#/${prefix-}}")
         compopt -o filenames
     fi
 }
diff --git a/completions/hcitool b/completions/hcitool
index 8c040c140e0..14729f0a5a8 100644
--- a/completions/hcitool
+++ b/completions/hcitool
@@ -2,7 +2,7 @@
 
 _bluetooth_addresses()
 {
-    if [[ ${COMP_BLUETOOTH_SCAN:-} ]]; then
+    if [[ ${COMP_BLUETOOTH_SCAN-} ]]; then
         COMPREPLY+=($(compgen -W "$(hcitool scan |
             awk '/^\t/{print $1}')" -- "$cur"))
     fi
diff --git a/completions/ipmitool b/completions/ipmitool
index d31de5e9abd..4844ec7d162 100644
--- a/completions/ipmitool
+++ b/completions/ipmitool
@@ -86,8 +86,7 @@ _ipmitool()
 
         shell) ;;
 
-        \
-            exec)
+        exec)
             _filedir
             ;;
 
diff --git a/completions/pkgadd b/completions/pkgadd
index f92e8a1119a..45bce6ca987 100644
--- a/completions/pkgadd
+++ b/completions/pkgadd
@@ -44,7 +44,7 @@ _pkgadd()
                     local -a tmplist
                     for filedir in $(/bin/ls -1 $device); do
                         if [[ -d "$device/$filedir" && -f "$device/$filedir/pkginfo" ]]; then
-                            tmplist+=(${tmplist[@]:-} "$filedir")
+                            tmplist+=(${tmplist[@]-} "$filedir")
                         fi
                     done
                     pkginst_list="${tmplist[*]}"
diff --git a/completions/smbclient b/completions/smbclient
index c72d556bc06..42382e5cd19 100644
--- a/completions/smbclient
+++ b/completions/smbclient
@@ -7,14 +7,14 @@ _samba_resolve_order()
 
 _samba_domains()
 {
-    if [[ ${COMP_SAMBA_SCAN:-} ]]; then
+    if [[ ${COMP_SAMBA_SCAN-} ]]; then
         COMPREPLY=($(compgen -W '$(smbtree -N -D)' -- "$cur"))
     fi
 }
 
 _samba_hosts()
 {
-    if [[ ${COMP_SAMBA_SCAN:-} ]]; then
+    if [[ ${COMP_SAMBA_SCAN-} ]]; then
         COMPREPLY=($(compgen -W "$(
             smbtree -N -S |
                 command sed -ne 's/^[[:space:]]*\\\\*\([^[:space:]]*\).*/\1/p'