diff --git a/.config/dotfiles/gitignore b/.config/dotfiles/gitignore
index 624fd84..5fd0e8f 100644
--- a/.config/dotfiles/gitignore
+++ b/.config/dotfiles/gitignore
@@ -5,6 +5,7 @@
 !/.config/dotfiles/gen-gitignore.sh
 !/.config/dotfiles/gitignore
 !/.config/dotfiles/install.sh
+!/.config/dotfiles/scripts/.keep
 !/.config/htop/htoprc.example
 !/.config/zsh/_.zsh
 !/.config/zsh/alias.zsh
@@ -20,6 +21,8 @@
 !/.config/zsh/alias/kconfig.zsh
 !/.config/zsh/alias/ls.zsh
 !/.config/zsh/alias/podman.zsh
+!/.config/zsh/alias/quilt.zsh
+!/.config/zsh/alias/sbuild.zsh
 !/.config/zsh/alias/sudo.zsh
 !/.config/zsh/alias/telnet.zsh
 !/.config/zsh/completion/.keep
diff --git a/.config/dotfiles/scripts/.keep b/.config/dotfiles/scripts/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/.config/zsh/_.zsh b/.config/zsh/_.zsh
index 574c653..f0711e2 100644
--- a/.config/zsh/_.zsh
+++ b/.config/zsh/_.zsh
@@ -12,9 +12,10 @@ ZSHU[d_conf]="${ZDOTDIR}/.config/zsh"
 
 ZSHU[d_var]="${ZSHU[d_conf]}/var"
 
-ZSHU[d_bin]="${ZDOTDIR}/.config/dotfiles/bin/"
+ZSHU[d_bin]="${ZDOTDIR}/.config/dotfiles/bin"
+ZSHU[d_scripts]="${ZDOTDIR}/.config/dotfiles/scripts"
 
-for i ( d_zdot d_cache d_conf d_bin d_var ) ; do
+for i ( d_zdot d_cache d_conf d_bin d_scripts d_var ) ; do
     d=${ZSHU[$i]}
     [ -d "$d" ] || mkdir -p "$d"
 done ; unset i d
@@ -36,12 +37,12 @@ umask 0022
 
 zshu_parts=( env opt lib rc alias local )
 
-for n ( $zshu_parts ) ; do
+for n ( ${zshu_parts} ) ; do
     f="${ZSHU[d_conf]}/$n.zsh"
     [ -s "$f" ] && source "$f"
 done ; unset n f
 
-for n ( $zshu_parts ) ; do
+for n ( ${zshu_parts} ) ; do
     d="${ZSHU[d_conf]}/$n"
     [ -d "$d" ] || continue
     for i ( $d/*.zsh(N.r) ) ; do
@@ -53,7 +54,7 @@ unset zshu_parts
 
 ZSHU[t_end]=${(%):-%D{%s.%6.}}
 
-ZSHU[t_load]=$(( ZSHU[t_end] - ZSHU[t_begin] ))
+ZSHU[t_load]=$[ ZSHU[t_end] - ZSHU[t_begin] ]
 ZSHU[t_load]=${ZSHU[t_load]:0:6}
 
 unset 'ZSHU[t_begin]' 'ZSHU[t_end]'
diff --git a/.config/zsh/alias/git.zsh b/.config/zsh/alias/git.zsh
index e8c2ee4..1663d7a 100644
--- a/.config/zsh/alias/git.zsh
+++ b/.config/zsh/alias/git.zsh
@@ -10,14 +10,16 @@ git-dir-usage() {
     else
         d=$(__z_git rev-parse --path-format=absolute --git-dir)
     fi
+
     case "$d" in
-    */* ) p=${d%/*} ; d=${d##*/} ;;
+    */* ) p=${d%/*} ; d=${d:t} ;;
     esac
-    ## ${p:+ env -C "$p" } du -cd2 "$d"
+
+    ## ${p:+ env -C "$p" } du -d2 "$d"
     if [ -n "$p" ] ; then
-        env -C "$p" du -cd2 "$d"
+        env -C "$p" du -d2 "$d"
     else
-        du -cd2 "$d"
+        du -d2 "$d"
     fi | grep -Ev '^[0-9]\s' | sort -Vk2
 }
 
diff --git a/.config/zsh/alias/gpg.zsh b/.config/zsh/alias/gpg.zsh
index a9410cb..473cbb0 100644
--- a/.config/zsh/alias/gpg.zsh
+++ b/.config/zsh/alias/gpg.zsh
@@ -1,14 +1,14 @@
 #!/bin/zsh
 
 gpg-warmup() {
-    local t r
-
     (( ${+commands[gpg]} )) || return 1
 
+    local t r
+
     t=$(mktemp)
     command gpg -abs "$t"
     r=$?
-    command rm -f "$t" "$t.asc"
+    rm -f "$t" "$t.asc"
 
     return "$r"
 }
diff --git a/.config/zsh/alias/grep.zsh b/.config/zsh/alias/grep.zsh
index c6b253a..d214fca 100644
--- a/.config/zsh/alias/grep.zsh
+++ b/.config/zsh/alias/grep.zsh
@@ -9,11 +9,12 @@ z-alt-grep() {
     n=${#a}
     [ -z "$1" ] && n=0
     case "$n" in
-    0) ;;
-    *) z-alt-set-static \
-         "grep|-q -e ' ' ${ZSHU[d_conf]}/_.zsh" \
-         "$1" \
-         "GREP_OPTIONS='' command" \
+    0 ) ;;
+    * )
+        z-alt-set-static \
+          "grep|-q -e ' ' ${ZSHU[d_conf]}/_.zsh" \
+          "$1" \
+          "GREP_OPTIONS='' command" \
     ;;
     esac
 }
@@ -25,5 +26,6 @@ z-alt-grep "grep ${GREP_GNU}|grep"
 unfunction z-alt-grep
 unset GREP_GNU
 
+alias grep='grep '
 alias egrep='grep -E '
 alias fgrep='grep -F '
diff --git a/.config/zsh/alias/idle.zsh b/.config/zsh/alias/idle.zsh
index 6456eaa..6a92cb8 100644
--- a/.config/zsh/alias/idle.zsh
+++ b/.config/zsh/alias/idle.zsh
@@ -1,16 +1,24 @@
 #!/bin/zsh
 
 idle() {
+    [ -n "${1:?}" ] || return 1
+
     local f
 
     f=$(type "$1")
     case "$f" in
-    "$1 is /"*) z-idle-ext "$@" ;;
-    *) z-idle-int "$@" ;;
+    "$1 is /"* )
+        z-idle-ext "$@"
+    ;;
+    * )
+        z-idle-int "$@"
+    ;;
     esac
 }
 
 z-idle-ext() {
+    [ -n "${1:?}" ] || return 1
+
     local -a s
 
     s+=( $(z-alt-find 'nice -n +40') )
@@ -20,6 +28,8 @@ z-idle-ext() {
 }
 
 z-idle-int() {
+    [ -n "${1:?}" ] || return 1
+
     ## execute in subshell
     (
         {
diff --git a/.config/zsh/alias/k8s.zsh b/.config/zsh/alias/k8s.zsh
index 5398569..8b8ad64 100644
--- a/.config/zsh/alias/k8s.zsh
+++ b/.config/zsh/alias/k8s.zsh
@@ -1,3 +1,3 @@
 #!/bin/zsh
 
-alias k=kubectl
+alias k='kubectl '
diff --git a/.config/zsh/alias/kconfig.zsh b/.config/zsh/alias/kconfig.zsh
index 30af63d..7a0df71 100644
--- a/.config/zsh/alias/kconfig.zsh
+++ b/.config/zsh/alias/kconfig.zsh
@@ -1,17 +1,25 @@
 #!/bin/zsh
 
 kconf-set() {
-    local n v
+    [ -n "${1:?}" ] || return 1
 
-    n=$1 v=$2 ; shift 2
-    grep -ElZ "^((CONFIG_)?$n=|# (CONFIG_)?$n is not set)" "$@" \
+    local n=$1 v=$2
+    shift 2
+
+    [ $# -gt 0 ] || return 2
+
+    command grep -ElZ "^((CONFIG_)?$n=|# (CONFIG_)?$n is not set)" "$@" \
     | xargs -0 -r sed -i -E -e "s/^(((CONFIG_)?$n)=.+|# ((CONFIG_)?$n) is not set)\$/\\2\\4=$v/"
 }
 
 kconf-unset() {
-    local n
+    [ -n "${1:?}" ] || return 1
 
-    n=$1 ; shift
-    grep -ElZ "^(CONFIG_)?$n=" "$@" \
+    local n=$1
+    shift
+
+    [ $# -gt 0 ] || return 2
+
+    command grep -ElZ "^(CONFIG_)?$n=" "$@" \
     | xargs -0 -r sed -i -E -e "s/^((CONFIG_)?$n)=.+\$/# \\1 is not set/"
 }
diff --git a/.config/zsh/alias/ls.zsh b/.config/zsh/alias/ls.zsh
index 7da20b5..2a50f9f 100644
--- a/.config/zsh/alias/ls.zsh
+++ b/.config/zsh/alias/ls.zsh
@@ -5,7 +5,7 @@ if [ -z "${LS_COLORS}" ] ; then
 fi
 
 case "${ZSHU[os_family]}" in
-bsd|darwin) export LSCOLORS="Gxfxcxdxbxegedabagacad" ;;
+bsd | darwin ) export LSCOLORS="Gxfxcxdxbxegedabagacad" ;;
 esac
 
 z-alt-ls() {
@@ -17,11 +17,12 @@ z-alt-ls() {
     n=${#a}
     [ -z "$1" ] && n=0
     case "$n" in
-    0) ;;
-    *) z-alt-set-static \
-        'ls|-d .' \
-        "$1" \
-        "LS_OPTIONS='' command"
+    0 ) ;;
+    * )
+        z-alt-set-static \
+          'ls|-d .' \
+          "$1" \
+          "LS_OPTIONS='' command"
     ;;
     esac
 }
@@ -29,12 +30,12 @@ z-alt-ls() {
 LS_GNU='--color=tty --group-directories-first'
 
 case "${ZSHU[os_type]}" in
-linux*)    alt="ls ${LS_GNU}|ls" ;;
-netbsd*)   alt="gls ${LS_GNU}|ls" ;;
-openbsd*)  alt="gls ${LS_GNU}|colorls -G|ls" ;;
-freebsd*)  alt="gls ${LS_GNU}|ls -G|ls" ;;
-darwin*)   alt="gls ${LS_GNU}|ls -G|ls" ;;
-*)         alt="ls ${LS_GNU}|ls" ;;
+linux* )   alt="ls ${LS_GNU}|ls" ;;
+netbsd* )  alt="gls ${LS_GNU}|ls" ;;
+openbsd* ) alt="gls ${LS_GNU}|colorls -G|ls" ;;
+freebsd* ) alt="gls ${LS_GNU}|ls -G|ls" ;;
+darwin* )  alt="gls ${LS_GNU}|ls -G|ls" ;;
+* )        alt="ls ${LS_GNU}|ls" ;;
 esac
 
 z-alt-ls "${alt}"
@@ -44,13 +45,13 @@ unset alt LS_GNU
 [ -n "${LS_COLORS}" ] && zstyle ':completion:*' list-colors "${(s.:.)LS_COLORS}"
 
 case "${ZSHU[os_family]}" in
-linux) alias l='ls -lhF ' ;;
-bsd)   alias l='ls -lhIF ' ;;
+linux ) alias l='ls -lhF ' ;;
+bsd )   alias l='ls -lhIF ' ;;
 esac
 
 alias ll='ls -lAF '
 
 case "${ZSHU[os_family]}" in
-linux) alias lll='ls -lAn --full-time ' ;;
-bsd)   alias lll='ls -lAnT ' ;;
+linux ) alias lll='ls -lAn --full-time ' ;;
+bsd )   alias lll='ls -lAnT ' ;;
 esac
diff --git a/.config/zsh/alias/quilt.zsh b/.config/zsh/alias/quilt.zsh
new file mode 100644
index 0000000..e62efdb
--- /dev/null
+++ b/.config/zsh/alias/quilt.zsh
@@ -0,0 +1,79 @@
+#!/bin/zsh
+
+quilt-series-strip-comments() {
+    sed -E '/^[[:space:]]*(#|$)/d' "$@"
+}
+
+quilt-series-auto() {
+    [ -n "${1:?}" ] || return 1
+
+    find "$1/" -follow -type f -printf '%P\0' \
+    | sed -zEn '/\.(diff|patch)$/p' \
+    | sort -zuV | xargs -0r -n1
+}
+
+krd-quilt() {
+    [ -n "${1:?}" ] || return 1
+
+    (( $+commands[quilt] )) || return 2
+
+    local patchdir series tmp_series
+
+    if [ -d "$1" ] ; then
+        patchdir="$1/debian/patches"
+        if [ -d "${patchdir}" ] ; then
+            [ -f "${patchdir}/series" ] || return 3
+        else
+            patchdir="$1"
+        fi
+
+        series="${patchdir}/series"
+        if ! [ -f "${series}" ] ; then
+            tmp_series=1
+            series=$(mktemp)
+            quilt-series-auto "${patchdir}" > "${series}"
+        fi
+    elif [ -f "$1" ] ; then
+        [ -s "$1" ] || return 3
+
+        series="$1"
+        patchdir=${series:h}
+    else
+        return 3
+    fi
+
+    local r
+    (
+        z-quilt-default-env
+        set -a
+        QUILT_SERIES="${series}"
+        QUILT_PATCHES="${patchdir}"
+        set +a
+
+        command quilt pop -a ; echo
+
+        r=0
+        while read -r i ; do
+            [ -n "$i" ] || continue
+
+            k="${patchdir}/$i"
+            command quilt --fuzz=0 push "$k"
+            r=$? ; [ $r -eq 0 ] || exit $r
+            command quilt refresh "$k"
+            r=$? ; [ $r -eq 0 ] || exit $r
+
+            sed -E -i \
+              -e 's#^(-{3} )[^/][^/]*/(.*)$#\1a/\2#;' \
+              -e 's#^(\+{3} )[^/][^/]*/(.*)$#\1b/\2#' \
+            "$k"
+
+            rm -f "$k"'~'
+        done <<< $(quilt-series-strip-comments "${series}")
+        exit $r
+    )
+    r=$?
+
+    [ -z "${tmp_series}" ] || rm -f "${series}"
+
+    return $r
+}
diff --git a/.config/zsh/alias/sbuild.zsh b/.config/zsh/alias/sbuild.zsh
new file mode 100644
index 0000000..21216b7
--- /dev/null
+++ b/.config/zsh/alias/sbuild.zsh
@@ -0,0 +1,67 @@
+#!/bin/zsh
+
+krd-debsrc() {
+    [ -n "${1:?}" ] || return 1
+
+    local dstdir
+    case "$1" in
+    */* ) dstdir="$1/src" ;;
+    * )   dstdir="/tmp/$1/src" ;;
+    esac
+    rm -rf "${dstdir}"
+    deb-src-export "${dstdir}"
+}
+
+krd-sbuild() {
+    [ -n "${1:?}" ] || return 1
+    [ -n "${2:?}" ] || return 1
+
+    (( $+commands[sbuild] )) || return 2
+    (( $+commands[xz] ))     || return 2
+
+    local topdir
+    case "$1" in
+    */* ) topdir="$1" ;;
+    * )   topdir="/tmp/$1" ;;
+    esac
+    [ -d "${topdir}" ] || return 3
+
+    local srcdir="${topdir}/src"
+    [ -d "${srcdir}" ] || return 3
+
+    arch="$2"
+
+    ## done with args
+    shift 2
+
+    local -a sbuild_env sbuild_args
+    local i
+    for i ; do
+        ## naive splitting args and env
+        case "$i" in
+        *=* ) sbuild_env+=( $i ) ;;
+        *)    sbuild_args+=( $i ) ;;
+        esac
+    done
+
+    (
+        for i ( ${sbuild_env} ) ; do
+            export "$i"
+        done
+
+        z-set-tmpdir /tmp
+
+        builddir="${topdir}/${arch}"
+        mkdir -p "${topdir}/all" "${builddir}" "${builddir}-debug"
+
+        cd "${builddir}"
+        for i ( "${srcdir}"/*.dsc(N.r) ) ; do
+            idle sbuild --arch-all --arch-any --arch=${arch} ${sbuild_args[@]} "$i"
+            find -name '*.build' -type l -exec rm -f {} +
+            find -name '*.build' -type f -exec xz -9vv {} +
+        done
+
+        find -name '*dbgsym*.deb' -type f -exec mv -nvt "../${arch}-debug" {} +
+        find -name '*_all.deb' -type f -exec mv -nvt '../all' {} +
+    )
+}
diff --git a/.config/zsh/alias/telnet.zsh b/.config/zsh/alias/telnet.zsh
index a25fe59..4ee551b 100644
--- a/.config/zsh/alias/telnet.zsh
+++ b/.config/zsh/alias/telnet.zsh
@@ -1,6 +1,6 @@
 #!/bin/zsh
 
 case "${ZSHU[os_type]}" in
-linux-gnu) alias tl='telnet -K ' ;;
-*bsd*)     alias tl='telnet -K -N -y ' ;;
+linux-gnu ) alias tl='telnet -K ' ;;
+*bsd* )     alias tl='telnet -K -N -y ' ;;
 esac
diff --git a/.config/zsh/env.zsh b/.config/zsh/env.zsh
index eb0f21e..076b25b 100644
--- a/.config/zsh/env.zsh
+++ b/.config/zsh/env.zsh
@@ -14,7 +14,7 @@ function {
 
     ## process in-home part
     t=( ${(@)p:#${HOME}/*} )
-    npath+=( "${ZSHU[d_bin]}" "${HOME}/bin" )
+    npath+=( "${ZSHU[d_scripts]}" "${ZSHU[d_bin]}" "${HOME}/bin" )
     npath+=( ${(@)p:|t} )
     p=( $t )
 
@@ -65,16 +65,16 @@ ZSHU[uname]=${ZSHU[uname]:l}
 ZSHU[mach]=$(uname -m 2>/dev/null)
 ZSHU[mach]=${ZSHU[mach]:l}
 case "${ZSHU[mach]}" in
-amd64) ZSHU[mach]=x86_64 ;;
-arm64) ZSHU[mach]=aarch64 ;;
-armv*) ZSHU[mach]=arm ;;
+amd64 ) ZSHU[mach]=x86_64 ;;
+arm64 ) ZSHU[mach]=aarch64 ;;
+armv* ) ZSHU[mach]=arm ;;
 esac
 
 ZSHU[os_type]=${OSTYPE:l}
 
 ZSHU[os_family]=${ZSHU[uname]:l}
 case "${ZSHU[os_family]}" in
-*bsd) ZSHU[os_family]=bsd ;;
+*bsd ) ZSHU[os_family]=bsd ;;
 esac
 
 ZSHU[host_name]=${(%):-%m}
diff --git a/.config/zsh/env/quilt.zsh b/.config/zsh/env/quilt.zsh
index b617e9d..e2f12d6 100644
--- a/.config/zsh/env/quilt.zsh
+++ b/.config/zsh/env/quilt.zsh
@@ -1,11 +1,15 @@
 #!/bin/zsh
 
-QUILT_PATCHES="debian/patches"
-QUILT_NO_DIFF_INDEX=1
-QUILT_NO_DIFF_TIMESTAMPS=1
-QUILT_PATCH_OPTS="--reject-format=unified"
-QUILT_DIFF_ARGS="-p ab --no-timestamps --no-index --color=auto"
-QUILT_REFRESH_ARGS="-p ab --no-timestamps --no-index"
-QUILT_COLORS="diff_hdr=1;32:diff_add=1;34:diff_rem=1;31:diff_hunk=1;33:diff_ctx=35:diff_cctx=33"
+z-quilt-default-env() {
+    set -a
+    QUILT_PATCHES='debian/patches'
+    QUILT_NO_DIFF_INDEX=1
+    QUILT_NO_DIFF_TIMESTAMPS=1
+    QUILT_PATCH_OPTS='--reject-format=unified'
+    QUILT_DIFF_ARGS='-pab --no-timestamps --no-index --color=auto'
+    QUILT_REFRESH_ARGS='-pab --no-timestamps --no-index'
+    QUILT_COLORS='diff_hdr=1;32:diff_add=1;34:diff_rem=1;31:diff_hunk=1;33:diff_ctx=35:diff_cctx=33'
+    set +a
+}
 
-typeset -x -m 'QUILT*'
+z-quilt-default-env
diff --git a/.config/zsh/lib/cmdtime.zsh b/.config/zsh/lib/cmdtime.zsh
index db52fcc..669a5dd 100644
--- a/.config/zsh/lib/cmdtime.zsh
+++ b/.config/zsh/lib/cmdtime.zsh
@@ -5,7 +5,7 @@ z-time() {
 
     a=${EPOCHREALTIME}
     "$@" ; r=$?
-    a=$(( EPOCHREALTIME - a ))
+    a=$[ EPOCHREALTIME - a ]
     a=$(z-ts-to-human "$a" 6)
     echo >&2
     echo "time took: $a" >&2
@@ -16,7 +16,7 @@ z-time() {
 if autoload -Uz add-zsh-hook ; then
 
 typeset -gA ZSHU_PS
-ZSHU_PS[cmd_threshold]=1
+ZSHU_PS[cmd_threshold]=3
 
 __z_cmdtime_measure() {
     local t x
@@ -26,14 +26,14 @@ __z_cmdtime_measure() {
     unset 'ZSHU[cmd_dt]' 'ZSHU_PS[elapsed]'
     (( ${+ZSHU[cmd_ts]} )) || return
 
-    t=$(( x - ${ZSHU[cmd_ts]} ))
+    t=$[ x - ZSHU[cmd_ts] ]
     ZSHU[cmd_ts]=$x
 
     x=${ZSHU_PS[cmd_threshold]}
-    x=$(( x + 0 )) || x=0
+    x=$[ x + 0 ] || x=0
     [ "$x" = 0 ] && return
 
-    x=$(( t - x ))
+    x=$[ t - x ]
     [ "${x:0:1}" = '-' ] && return
 
     t=$(z-ts-to-human "$t")
diff --git a/.config/zsh/lib/completion.zsh b/.config/zsh/lib/completion.zsh
index 1e35bf8..a504ef5 100644
--- a/.config/zsh/lib/completion.zsh
+++ b/.config/zsh/lib/completion.zsh
@@ -9,7 +9,7 @@ fpath=( "${ZSHU[d_cache]}/completion" $fpath )
 __z_compdump_print() { printf '#zshu %s %s\n' "$1" "${(P)1}" ; }
 
 __z_compdump_invalidate() {
-    command rm -f "${ZSHU[f_compdump]}"
+    rm -f "${ZSHU[f_compdump]}"
     find "${ZSHU[d_compcache]}/" -xdev -type f '!' -name '.keep' -delete
     ZSHU[compdump_refresh]=1
 }
@@ -99,5 +99,5 @@ z-comp-invalidate() {
 
     f="${ZSHU[d_cache]}/completion/_$1"
     [ -f "$f" ] || return 2
-    command rm -f "$f" || return 3
+    rm -f "$f" || return 3
 }
diff --git a/.config/zsh/lib/pswalk.zsh b/.config/zsh/lib/pswalk.zsh
index 0aa8a00..0eb0a62 100644
--- a/.config/zsh/lib/pswalk.zsh
+++ b/.config/zsh/lib/pswalk.zsh
@@ -18,7 +18,7 @@ function {
     for i ( ${ZSHU_PARENTS_PID} ) ; do
         c=$(ps -o comm= -p $i 2>/dev/null) || :
         [ -n "$c" ] || continue
-        ZSHU_PARENTS_NAME+=( "${c##*/}" )
+        ZSHU_PARENTS_NAME+=( "${c:t}" )
     done
 
     typeset -r ZSHU_PARENTS_PID
diff --git a/.config/zsh/lib/time.zsh b/.config/zsh/lib/time.zsh
index 9e1627e..b5ef149 100644
--- a/.config/zsh/lib/time.zsh
+++ b/.config/zsh/lib/time.zsh
@@ -4,23 +4,23 @@ z-ts-to-human() {
     local t s n d h m f x
 
     t=$1
-    t=$(( float(t) ))
-    s=$(( int(t) ))
-    n=$(( int((t - s) * (10**9)) ))
+    t=$[ float(t) ]
+    s=$[ int(t) ]
+    n=$[ int((t - s) * (10**9)) ]
     t=$s
 
     d=0 h=0 m=0
     if [ $t -ge 86400 ] ; then
-        d=$(( t / 86400 ))
-        t=$(( t % 86400 ))
+        d=$[ t / 86400 ]
+        t=$[ t % 86400 ]
     fi
     if [ $t -ge 3600 ] ; then
-        h=$(( t / 3600 ))
-        t=$(( t % 3600 ))
+        h=$[ t / 3600 ]
+        t=$[ t % 3600 ]
     fi
     if [ $t -ge 60 ] ; then
-        m=$(( t / 60 ))
-        t=$(( t % 60 ))
+        m=$[ t / 60 ]
+        t=$[ t % 60 ]
     fi
 
     ## strftime does desired rounding for $n/(10**9) internally
@@ -28,8 +28,8 @@ z-ts-to-human() {
     ## keep math in sync with format above
     x=3
     case "$2" in
-    0)     x=7 ;;
-    [1-6]) x=$(( 6 - $2 )) ;;
+    0 )     x=7 ;;
+    [1-6] ) x=$[ 6 - $2 ] ;;
     esac
     [ $x -gt 0 ] && f="${f:0:-$x}s"
 
diff --git a/.config/zsh/lib/title.zsh b/.config/zsh/lib/title.zsh
index aac17ab..a254757 100644
--- a/.config/zsh/lib/title.zsh
+++ b/.config/zsh/lib/title.zsh
@@ -7,14 +7,14 @@ z-title-tab() {
     emulate -L zsh
 
     case "${TERM}" in
-    cygwin|xterm*|putty*|rxvt*|konsole*|ansi|mlterm*|alacritty|st*)
+    cygwin | xterm* | putty* | rxvt* | konsole* | ansi | mlterm* | alacritty | st* )
         print -Pn "\e]1;${1:q}\a"
     ;;
-    screen*|tmux*)
+    screen* | tmux* )
         ## hardstatus
         print -Pn "\ek${1:q}\e\\"
     ;;
-    *)
+    * )
         z-ti-test fsl tsl || return
 
         echoti tsl
@@ -28,7 +28,7 @@ z-title-window() {
     emulate -L zsh
 
     case "${TERM}" in
-    cygwin|xterm*|putty*|rxvt*|konsole*|ansi|mlterm*|alacritty|st*)
+    cygwin | xterm* | putty* | rxvt* | konsole* | ansi | mlterm* | alacritty | st* )
         print -Pn "\e]2;${1:q}\a"
     ;;
     esac
diff --git a/.config/zsh/rc/keyboard.zsh b/.config/zsh/rc/keyboard.zsh
index 4e6d1ce..ce493b9 100644
--- a/.config/zsh/rc/keyboard.zsh
+++ b/.config/zsh/rc/keyboard.zsh
@@ -85,7 +85,7 @@ z-bind () {
     [ ${#keys} -eq 0 ] && return 1
 
     case "${widget}" in
-    /*)
+    /* )
         widget=${widget:1}
         emulate zsh -c "autoload -RUz ${widget}"
         zle -N "${widget}"