remove unnecessary and confusing quotes

12 files changed, 159 insertions, 159 deletions

diff --git a/bin/build-master-status b/bin/build-master-status
index 2522da7..55bbe0b 100755
--- a/bin/build-master-status
+++ b/bin/build-master-status
@@ -52,19 +52,19 @@ if [ $# -ne 0 ]; then
   usage
 fi
 
-stable="$(
+stable=$(
   ls_master_mirror 'i686' | \
     grep -v 'testing$\|staging$\|-unstable$' | \
     while read -r dir; do
       ls_master_mirror "i686/${dir}"
     done | \
     grep -c '\.pkg\.tar\.xz$'
-  )"
-tasks="$(
+)
+tasks=$(
   grep -c '^\S\+ \S\+ \S\+ \S\+$' \
     "${work_dir}/build-list"
-  )" || true
-pending_packages="$(
+) || true
+pending_packages=$(
   grep '^\S\+ \S\+ \S\+ \S\+$' "${work_dir}/build-list" | \
     tr ' ' '.' | \
     while read -r package; do
@@ -72,49 +72,49 @@ pending_packages="$(
       cat "${work_dir}/package-infos/${package}.packages"
     done |
     wc -l
-)"
-staging="$(
+)
+staging=$(
   ls_master_mirror 'i686' | \
     grep 'staging$' | \
     while read -r dir; do
       ls_master_mirror "i686/${dir}"
     done | \
     grep -c '\.pkg\.tar\.xz$'
-  )"
-testing="$(
+  )
+testing=$(
   ls_master_mirror 'i686' | \
     grep 'testing$' | \
     while read -r dir; do
       ls_master_mirror "i686/${dir}"
     done | \
     grep -c '\.pkg\.tar\.xz$'
-  )"
-broken="$(
+  )
+broken=$(
   ls "${work_dir}/package-states/" | \
     grep -c '\.broken$'
-  )" || true
-blocked="$(
+  ) || true
+blocked=$(
   ls "${work_dir}/package-states/" | \
     grep -c '\.blocked$'
-  )" || true
-locked="$(
+  ) || true
+locked=$(
   ls "${work_dir}/package-states/" | \
     grep -c '\.locked$'
-  )" || true
-loops="$(
+  ) || true
+loops=$(
   ls "${work_dir}/build-list.loops" | \
     grep -c '^loop_[0-9]\+$'
-  )" || true
-looped_packages="$(
+  ) || true
+looped_packages=$(
   ls "${work_dir}/build-list.loops" | \
     grep '^loop_[0-9]\+$' | \
     sed "s|^|${work_dir}/build-list.loops/|" | \
     xargs -r cat | \
     sort -u | \
     wc -l
-  )"
+  )
 
-tmp_dir="$(mktemp -d)"
+tmp_dir=$(mktemp -d)
 trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
 printf 'The mirror master contains %d stable packages (vs. ca. %d planned).\n' \
diff --git a/bin/build-packages b/bin/build-packages
index c54f34e..fc3a205 100755
--- a/bin/build-packages
+++ b/bin/build-packages
@@ -105,13 +105,13 @@ while [ ${count} -ne 0 ]; do
   fi
 
   err=0
-  package="$(
+  package=$(
     ssh \
       -i "${master_build_server_identity}" \
       -p "${master_build_server_port}" \
       "${master_build_server_user}@${master_build_server}" \
       'get-assignment'
-  )" || err=$?
+  ) || err=$?
 
   case ${err} in
 
@@ -133,7 +133,7 @@ while [ ${count} -ne 0 ]; do
         git -C "${repo_path}" fetch
       done
 
-      git_repo="$(find_repository_with_commit "${git_revision}")"
+      git_repo=$(find_repository_with_commit "${git_revision}")
 
       find_pkgbuilds "${package}" "${repository}" "${git_repo}" "${git_revision}" "${mod_git_revision}"
 
@@ -146,7 +146,7 @@ while [ ${count} -ne 0 ]; do
         recursively_umount_and_rm "${tmp_dir}"
         exit ${err}
       }
-      tmp_dir="$(mktemp -d "${work_dir}/tmp.XXXXXX")"
+      tmp_dir=$(mktemp -d "${work_dir}/tmp.XXXXXX")
       trap bail_out EXIT
 
       extract_source_directory "${git_repo}" "${git_revision}" "${mod_git_revision}" "${tmp_dir}"
@@ -159,7 +159,7 @@ while [ ${count} -ne 0 ]; do
           grep -qF ':mirrored_source:'; then
           # maybe a missing source is/was the problem?
           # try to download them from sources.archlinux.org/sources/$repo/$source
-          source_name="$(
+          source_name=$(
             makepkg --printsrcinfo | \
               sed -n '
                 /^\s*\(epoch\|pkg\(base\|ver\|rel\)\) = /{s|^\s\+||;p}
@@ -179,7 +179,7 @@ while [ ${count} -ne 0 ]; do
                   s|\n[0-9] ||
                 ta
               '
-          )"
+          )
           if ! wget -nc -nd "https://sources.archlinux.org/sources/${git_repo}/${source_name}"; then
             # we can't improve anything
             continue
diff --git a/bin/clean-cache b/bin/clean-cache
index 726fd2e..83657b6 100755
--- a/bin/clean-cache
+++ b/bin/clean-cache
@@ -15,13 +15,13 @@ fi
 
 repos='build-support community-staging community-testing community core extra gnome-unstable kde-unstable staging testing'
 
-mirror="$(
+mirror"$(
   grep -m1 '^Server = ' '/etc/pacman.d/mirrorlist32' | \
     cut -d= -f2 | \
     sed 's|^\s*||'
-)"
+)
 
-tmp_dir="$(mktemp -d)"
+tmp_dir=$(mktemp -d)
 trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
 for repo in ${repos}; do
diff --git a/bin/common-functions b/bin/common-functions
index 923fbb0..08fe9ab 100755
--- a/bin/common-functions
+++ b/bin/common-functions
@@ -14,7 +14,7 @@ find_pkgbuilds() {
   local git_revision="$4"
   local mod_git_revision="$5"
 
-  PKGBUILD="$(
+  PKGBUILD=$(
     eval git -C "$(printf '"${repo_paths__%s}"' "${git_repository}")" 'archive "${git_revision}" -- "${package}/repos/"' 2> /dev/null | \
       tar -t 2> /dev/null | \
       grep "^$(str_to_regex "${package}/repos/${repository}")"'-.*/PKGBUILD$' | \
@@ -22,12 +22,12 @@ find_pkgbuilds() {
       grep -v -- '[-/]\(staging\|testing\|unstable\)-[^/]\+/PKGBUILD$' | \
       sort | \
       tail -n1
-  )"
+  )
 
-  PKGBUILD_mod="$(
+  PKGBUILD_mod=$(
     git -C "${repo_paths__archlinux32}" archive "${mod_git_revision}" 2> /dev/null | \
       tar -t "${repository}/${package}/PKGBUILD" 2> /dev/null
-  )" || true
+  ) || true
 
   if [ -z "${PKGBUILD}" ] && \
     [ -z "${PKGBUILD_mod}" ]; then
@@ -206,14 +206,14 @@ delete_old_metadata() {
 
   local current_metadata
 
-  current_metadata="$(
+  current_metadata=$(
     ls "${work_dir}/package-infos" | \
       sed '
         s|\.[^.]\+$||
         s|\.\([^.]\+\)\.\([^.]\+\)\.\([^.]\+\)$| \1 \2 \3|
       ' | \
       sort -u
-  )"
+  )
 
   (
     # what we have
@@ -230,7 +230,7 @@ delete_old_metadata() {
     # build-list items should stay
     sed 'p' "${work_dir}/build-list"
 
-    tmp_dir="$(mktemp -d)"
+    tmp_dir=$(mktemp -d)
     trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
     echo "${current_metadata}" | \
@@ -294,14 +294,14 @@ delete_old_metadata() {
             opkg=''
             continue
           fi
-          revs="$(
+          revs=$(
             printf '%s\n' ${revs} ${rev} | \
               sort -u
-          )"
-          mod_revs="$(
+          )
+          mod_revs=$(
             printf '%s\n' ${mod_revs} ${mod_rev} | \
               sort -u
-          )"
+          )
           orepo="${repo}"
           opkg="${pkg}"
         done
@@ -348,7 +348,7 @@ repository_of_package() {
 
 official_or_community() {
   local prepo
-  prepo="$(repository_of_package "$1")"
+  prepo=$(repository_of_package "$1")
 
   if [ "${prepo}" = 'community' ]; then
     echo 'community-'"$2"
@@ -410,11 +410,11 @@ wait_some_time() {
     diff=30
   fi
 
-  random="$(
+  random=$(
     dd if='/dev/urandom' count=1 2> /dev/null | \
       cksum | \
       cut -d' ' -f1
-  )"
+  )
 
   sleep $((${minimum} + ${random} % ${diff}))
 }
@@ -442,7 +442,7 @@ make_source_info() {
   local PKGBUILD
   local PKGBUILD_mod
 
-  git_repo="$(find_repository_with_commit "${git_revision}")"
+  git_repo=$(find_repository_with_commit "${git_revision}")
 
   if [ -z "${git_repo}" ]; then
     return 1
@@ -452,7 +452,7 @@ make_source_info() {
 
   (
 
-    tmp_dir="$(mktemp -d "${work_dir}/tmp.XXXXXX")"
+    tmp_dir=$(mktemp -d "${work_dir}/tmp.XXXXXX")
     trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
     extract_source_directory "${git_repo}" "${git_revision}" "${mod_git_revision}" "${tmp_dir}"
@@ -495,14 +495,14 @@ insert_break_loops_orders() {
   local looped_packages
   local line
 
-  looped_packages="$(
+  looped_packages=$(
     ls "${work_dir}/build-list.loops" | \
       grep '^loop_[0-9]\+$' | \
       sed "s|^|${work_dir}/build-list.loops/|" | \
       xargs -r cat | \
       sort -u | \
       wc -l
-  )"
+  )
 
   (
     while read -r line; do
@@ -538,7 +538,7 @@ append_architectures() {
 find_newest_of_git_revisions() {
   local revisions
   local repo
-  revisions="$(cat)"
+  revisions=$(cat)
 
   if [ $(
     echo "${revisions}" | \
@@ -550,13 +550,13 @@ find_newest_of_git_revisions() {
 
   fi
 
-  repo="$(
+  repo=$(
     find_repository_with_commit \
       "$(
         echo "${revisions}" | \
           grep -xm1 '[0-9a-f]\{40\}'
       )"
-  )"
+  )
 
   eval 'repo="${repo_paths__'"${repo}"'}"'
 
@@ -587,7 +587,7 @@ find_package_repository_to_package() {
 
   eval 'repo_path="${repo_paths__'"${git_repository}"'}"'
 
-  repo="$(
+  repo=$(
     git -C "${repo_path}" archive "$(cat "${work_dir}/${git_repository}.revision")" -- "${package}/repos" 2> /dev/null | \
       tar -t | \
       cut -d/ -f3 | \
@@ -596,7 +596,7 @@ find_package_repository_to_package() {
       grep -v -- '-i686$' | \
       sed 's|-[^-]\+$||' | \
       sort -u
-  )"
+  )
 
   if [ -z "${repo}" ]; then
     return 1
diff --git a/bin/db-update b/bin/db-update
index af70c10..4f3cc38 100755
--- a/bin/db-update
+++ b/bin/db-update
@@ -160,10 +160,10 @@ move_packages() {
     mkdir -p "${tmp_dir}/${from_repo}"
     mkdir -p "${tmp_dir}/${to_repo}"
 
-    repos="$(
+    repos=$(
       printf '%s\n' "${from_repo}" "${to_repo}" $(cat "${tmp_dir}/repos") | \
       sort -u
-    )"
+    )
     echo "${repos}" > \
       "${tmp_dir}/repos"
 
@@ -289,12 +289,12 @@ move_packages() {
 
     # and update the state files
 
-    from_ending="$(
+    from_ending=$(
       cat "${tmp_dir}/${package}.from_ending"
-    )"
-    to_ending="$(
+    )
+    to_ending=$(
       cat "${tmp_dir}/${package}.to_ending"
-    )"
+    )
 
     if [ -z "${to_ending}" ]; then
       ${dummynator} rm \
@@ -370,11 +370,11 @@ do
   shift
 done
 
-packages_to_stabilize="$(
+packages_to_stabilize=$(
   printf '%s\n' \
     ${packages_to_stabilize} \
     ${@}
-)"
+)
 
 if ! "${base_dir}/bin/sanity-check" -r; then
   >&2 echo 'Build master is not sane.'
@@ -403,7 +403,7 @@ if ! flock ${block_flag} 8; then
   exit 1
 fi
 
-tmp_dir="$(mktemp -d "${work_dir}/tmp.XXXXXX")"
+tmp_dir=$(mktemp -d "${work_dir}/tmp.XXXXXX")
 
 clean_up_lock_file() {
   rm -f "${package_database_lock_file}" "${build_list_lock_file}"
@@ -459,11 +459,11 @@ ls "${work_dir}/package-states" | \
 
 # remove packages not yet done from keep-packages list
 
-keep_packages="$(
+keep_packages=$(
   join -1 1 -2 1 -o 2.2 \
     "${tmp_dir}/keep_packages" \
     "${tmp_dir}/done_packages"
-)"
+)
 printf '%s\n' "${keep_packages}" | \
   grep -vxF '' > \
   "${tmp_dir}/keep_packages" || \
@@ -481,29 +481,29 @@ while [ -s "${tmp_dir}/new_keep_packages" ]; do
     generate_package_metadata "${package}"
   done < "${tmp_dir}/new_keep_packages"
 
-  keep_packages="$(
+  keep_packages=$(
     (
       printf '%s\n' "${keep_packages}"
       cat "${tmp_dir}/new_keep_packages"
     ) | \
       sort -u
-  )"
+  )
 
-  new_keep_packages="$(
+  new_keep_packages=$(
     while read -r package; do
       cat "${work_dir}/package-infos/${package}.depends"
     done < \
       "${tmp_dir}/new_keep_packages" | \
       sort -u
-  )"
+  )
   printf '%s\n' "${new_keep_packages}" > \
     "${tmp_dir}/new_keep_packages"
 
-  new_keep_packages="$(
+  new_keep_packages=$(
     join -1 1 -2 1 -o 2.2 \
       "${tmp_dir}/new_keep_packages" \
       "${tmp_dir}/done_packages"
-  )"
+  )
 
   # "new" is only what has not been there before
   printf '%s\n' "${keep_packages}" "${keep_packages}" "${new_keep_packages}" | \
@@ -513,15 +513,15 @@ while [ -s "${tmp_dir}/new_keep_packages" ]; do
 
 done
 
-done_packages="$(cat "${tmp_dir}/done_packages")"
+done_packages=$(cat "${tmp_dir}/done_packages")
 
 # if build list is empty, remember all entries of 'deletion-list'
 if grep -qvxF 'break_loops' "${work_dir}/build-list"; then
   delete_packages=''
 else
-  delete_packages="$(
+  delete_packages=$(
     cat "${work_dir}/deletion-list"
-  )"
+  )
 fi
 
 if [ -z "${delete_packages}" ]; then
@@ -540,18 +540,18 @@ fi
 
 # calculate unstageable packages from keep_packages and done_packages
 
-done_packages="$(
+done_packages=$(
   echo "${done_packages}" | \
     cut -d' ' -f2
-)"
+)
 
-done_packages="$(
+done_packages=$(
   (
     printf '%s\n' "${done_packages}" "${keep_packages}"
   ) | \
     sort | \
     uniq -u
-)"
+)
 
 unset keep_packages
 
diff --git a/bin/get-assignment b/bin/get-assignment
index 1b2a00d..08c7be3 100755
--- a/bin/get-assignment
+++ b/bin/get-assignment
@@ -157,11 +157,11 @@ done
 # Find package (of all packages which are not locked and have been broken the least times)
 # which breaks the most unlocked loops
 
-locked_packages="$(
+locked_packages=$(
   ls "${work_dir}/package-states/" | \
     grep '\(\.[0-9a-f]\{40\}\)\{2\}\.[^\.\]\+\.locked$' | \
     sed 's|\(\.[0-9a-f]\{40\}\)\{2\}\.[^\.\]\+\.locked$||'
-)"
+)
 
 grep -vxF 'break_loops' "${work_dir}/build-list" | \
   sort -k1,1 > \
@@ -189,10 +189,10 @@ for package in $(
       "${work_dir}/build-list.sorted-by-package" | \
     while read -r count package git_revision git_mod_revision repository; do
       if [ -f "${work_dir}/package-states/${package}.${git_revision}.${git_mod_revision}.${repository}.broken" ]; then
-        trials="$(
+        trials=$(
           wc -l < \
             "${work_dir}/package-states/${package}.${git_revision}.${git_mod_revision}.${repository}.broken"
-        )"
+        )
       else
         trials='0'
       fi
diff --git a/bin/get-package-updates b/bin/get-package-updates
index b51d7c2..e91e471 100755
--- a/bin/get-package-updates
+++ b/bin/get-package-updates
@@ -227,7 +227,7 @@ echo 'apply blacklisting'
 # this is the first time when all the information is available and up to date
 
 black_listed=''
-black_listed_new="$(
+black_listed_new=$(
   (
     git -C "${repo_paths__archlinux32}" archive "$(cat "${work_dir}/archlinux32.revision")" -- 'blacklist' | \
       tar -Ox 'blacklist'
@@ -237,7 +237,7 @@ black_listed_new="$(
       uniq
   ) | \
     sort -u
-)"
+)
 
 ls "${work_dir}/package-infos/" | \
   grep '\(\.[0-9a-f]\{40\}\)\{2\}\.[^.]\+\.builds$' | \
@@ -270,16 +270,16 @@ ls "${work_dir}/package-infos/" | \
       mod_revs=''
       continue
     fi
-    revs="$(
+    revs=$(
       printf '%s\n' \
         ${revs} \
         "${rev}"
-    )"
-    mod_revs="$(
+    )
+    mod_revs=$(
       printf '%s\n' \
         ${mod_revs} \
         "${mod_rev}"
-    )"
+    )
     opkg="${pkg}"
     orepo="${repo}"
   done | \
@@ -308,11 +308,11 @@ sed "
   "${work_dir}/newest-dependencies"
 
 while [ -n "${black_listed_new}" ]; do
-  black_listed="$(
+  black_listed=$(
     printf '%s\n' ${black_listed} ${black_listed_new} | \
       sort -u
-  )"
-  black_listed_new="$(
+  )
+  black_listed_new=$(
     (
       printf '%s\n' ${black_listed} | \
         sort -k1,1 | \
@@ -354,12 +354,12 @@ while [ -n "${black_listed_new}" ]; do
         fi
       done | \
       sort -u
-  )"
-  black_listed_new="$(
+  )
+  black_listed_new=$(
     printf '%s\n' ${black_listed} ${black_listed} ${black_listed_new} | \
       sort | \
       uniq -u
-  )"
+  )
 done
 echo "${black_listed}" | \
   while read -r package; do
diff --git a/bin/return-assignment b/bin/return-assignment
index a057799..bfd4d5b 100755
--- a/bin/return-assignment
+++ b/bin/return-assignment
@@ -63,11 +63,11 @@ if [ "$5" = 'ERROR' ]; then
 
   # unlock every loop this package would have broken and which is not
   # broken by another locked package
-  locked_packages="$(
+  locked_packages=$(
     ls "${work_dir}/package-states/" | \
       grep '\.locked$' | \
       sed 's@^.*/\([^/]\+\)\.\([0-9a-f]\{40\}\.\)\{2\}[^.]\+\.locked$@\1@'
-  )"
+  )
   grep -lxF "${1}" "${work_dir}/build-list.loops/loop_"* 2> /dev/null | \
     while read -r loop; do
       if [ -z "$(
@@ -121,7 +121,7 @@ clean_up_tmp_dir() {
   clean_up_lock_file
 }
 
-tmp_dir="$(mktemp -d "${work_dir}/tmp.XXXXXX")"
+tmp_dir=$(mktemp -d "${work_dir}/tmp.XXXXXX")
 cd "${tmp_dir}"
 trap clean_up_tmp_dir EXIT
 
@@ -133,14 +133,14 @@ tar -x \
   '*.pkg.tar.xz.sig'
 
 # check if all packages are signed and all signatures belong to a package
-signature_errors="$(
+signature_errors=$(
   ls -1 *.pkg.tar.xz{,.sig} | \
     sed 's|\.sig$||' | \
     sort | \
     uniq -c | \
     grep -v '^\s*2\s' | \
     awk '{print $2}'
-)"
+)
 
 if [ -n "${signature_errors}" ]; then
   >&2 echo 'The following packages lack a signature or vice versa:'
@@ -149,11 +149,11 @@ if [ -n "${signature_errors}" ]; then
 fi
 
 # check if the sent packages are the expected ones
-packages="$(
+packages=$(
   ls -1 | \
     grep '\.pkg\.tar\.xz$'
-)"
-package_errors="$(
+)
+package_errors=$(
   (
     printf '%s\n' ${packages} | \
       sed '
@@ -170,7 +170,7 @@ package_errors="$(
   ) | \
     sort -k2 | \
     uniq -u -f1
-)"
+)
 
 if [ -n "${package_errors}" ]; then
   >&2 echo 'The following packages should have been built but are missing or vice versa:'
@@ -179,7 +179,7 @@ if [ -n "${package_errors}" ]; then
 fi
 
 # move packages
-destination="$(official_or_community "$1.$2.$3.$4" 'staging')"
+destination=$(official_or_community "$1.$2.$3.$4" 'staging')
 
 ${master_mirror_rsync_command} \
   "${master_mirror_rsync_directory}/i686/${destination}/${destination}.db."* \
diff --git a/bin/sanity-check b/bin/sanity-check
index 36ac0eb..beb1206 100755
--- a/bin/sanity-check
+++ b/bin/sanity-check
@@ -50,7 +50,7 @@ do
   shift
 done
 
-tmp_dir="$(mktemp -d)"
+tmp_dir=$(mktemp -d)
 trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
 if [ $# -eq 0 ]; then
@@ -66,9 +66,9 @@ while [ $# -gt 0 ]; do
       [ ${silence} -gt 0 ] || \
         >&2 printf 'checking build-list ...'
 
-      errors="$(
+      errors=$(
         grep -vn '^\S\+ [0-9a-f]\{40\} [0-9a-f]\{40\} \S\+$\|^break_loops$' "${work_dir}/build-list"
-      )" || true
+      ) || true
       if [ -n "${errors}" ]; then
         if [ ${silence} -le 1 ]; then
           echo
@@ -78,12 +78,12 @@ while [ $# -gt 0 ]; do
         exit 1
       fi
 
-      errors="$(
+      errors=$(
         grep -vxF 'break_loops' "${work_dir}/build-list" | \
           awk '{print $1}' | \
           sort | \
           uniq -d
-      )"
+      )
       if [ -n "${errors}" ]; then
         if [ ${silence} -le 1 ]; then
           echo
@@ -93,7 +93,7 @@ while [ $# -gt 0 ]; do
         exit 1
       fi
 
-      errors="$(
+      errors=$(
         (
           grep -vxF 'break_loops' "${work_dir}/build-list" | \
             awk '{print $1}'
@@ -101,7 +101,7 @@ while [ $# -gt 0 ]; do
         ) | \
           sort | \
           uniq -d
-      )"
+      )
       if [ -n "${errors}" ]; then
         if [ ${silence} -le 1 ]; then
           echo
@@ -123,7 +123,7 @@ while [ $# -gt 0 ]; do
 
       repos='build-support community-staging community-testing community core extra gnome-unstable kde-unstable staging testing'
 
-      errors="$(
+      errors=$(
         (
           printf 'expected %s\n' ${repos}
           ls_master_mirror 'i686' | \
@@ -131,7 +131,7 @@ while [ $# -gt 0 ]; do
         ) | \
           sort -k2 | \
           uniq -uf1
-      )"
+      )
       if [ -n "${errors}" ]; then
         if [ ${silence} -le 1 ]; then
           echo
@@ -153,12 +153,12 @@ while [ $# -gt 0 ]; do
         [ ${silence} -gt 0 ] || \
           >&2 printf 'checking consistency of repository "%s" on the master mirror ...' "${repo}"
 
-        packages="$(
+        packages=$(
           ls_master_mirror "i686/${repo}" | \
             grep '\.pkg\.tar\.xz\(\.sig\)\?$'
-        )" || true
+        ) || true
 
-        errors="$(
+        errors=$(
           echo "${packages}" | \
             grep '\S' | \
             sed '
@@ -169,7 +169,7 @@ while [ $# -gt 0 ]; do
             uniq -cf1 | \
             grep -v '^\s*2\s' | \
             awk '{print $2 " " $3}'
-        )" || true
+        ) || true
         if [ -n "${errors}" ]; then
           if [ ${silence} -le 1 ]; then
             echo
@@ -184,7 +184,7 @@ while [ $# -gt 0 ]; do
           "${master_mirror_rsync_directory}/i686/${repo}/${repo}.files.tar.gz" \
           "${tmp_dir}/"
 
-        errors="$(
+        errors=$(
           (
             tar -tzf "${tmp_dir}/${repo}.db.tar.gz" | \
               grep '/$' | \
@@ -202,7 +202,7 @@ while [ $# -gt 0 ]; do
           ) | \
             sort -k2 | \
             uniq -uf1
-        )"
+        )
         if [ -n "${errors}" ]; then
           if [ ${silence} -le 1 ]; then
             echo
@@ -212,7 +212,7 @@ while [ $# -gt 0 ]; do
           exit 1
         fi
 
-        errors="$(
+        errors=$(
           (
             tar -tzf "${tmp_dir}/${repo}.files.tar.gz" | \
               grep '/$' | \
@@ -230,7 +230,7 @@ while [ $# -gt 0 ]; do
           ) | \
             sort -k2 | \
             uniq -uf1
-        )"
+        )
         if [ -n "${errors}" ]; then
           if [ ${silence} -le 1 ]; then
             echo
@@ -256,7 +256,7 @@ while [ $# -gt 0 ]; do
         [ ${silence} -gt 0 ] || \
           >&2 printf 'checking state-files of "%s" ...' "${status%:*}"
 
-        errors="$(
+        errors=$(
           (
             ls "${work_dir}/package-states" | \
               grep "\.${status#*:}\$" | \
@@ -275,7 +275,7 @@ while [ $# -gt 0 ]; do
             uniq -cf1 | \
             grep -v '^\s*2\s' | \
             awk '{print $2 " " $3}'
-        )"
+        )
         if [ -n "${errors}" ]; then
           if [ ${silence} -le 1 ]; then
             echo
diff --git a/bin/seed-build-list b/bin/seed-build-list
index 3a5c99b..d2e342b 100755
--- a/bin/seed-build-list
+++ b/bin/seed-build-list
@@ -25,7 +25,7 @@ usage() {
   [ -z "$1" ] && exit 1 || exit $1
 }
 
-tmp_dir="$(mktemp -d)"
+tmp_dir=$(mktemp -d)
 trap "rm -rf --one-file-system '${tmp_dir}'" EXIT
 
 eval set -- "$(
@@ -175,7 +175,7 @@ while read -r pkg; do
   fi
   success=false
   for arch in x86_64 any; do
-    pkgbase="$(
+    pkgbase=$(
       curl -sS "https://www.archlinux.org/packages/community/x86_64/${pkg}/" | \
         sed -n '
           /Base Package:/{
@@ -194,7 +194,7 @@ while read -r pkg; do
           s|/$||
           s|^.*/||
         '
-    )"
+    )
     if [ -n "${pkgbase}" ]; then
       echo "${pkgbase}" >> \
         "${tmp_dir}/delta_pkgbases"
@@ -230,7 +230,7 @@ rm "${tmp_dir}/delta_packages"
 # convert append_packages to build-list.new (add git hashes)
 
 while read -r pkg repo; do
-  git_repo="$(find_git_repository_to_package_repository "${repo}")"
+  git_repo=$(find_git_repository_to_package_repository "${repo}")
   printf '%s %s %s %s\n' \
     "${pkg}" \
     "$(cat "${work_dir}/${git_repo}.revision")" \
diff --git a/bin/show-dependencies b/bin/show-dependencies
index e6eb070..4db1864 100755
--- a/bin/show-dependencies
+++ b/bin/show-dependencies
@@ -5,15 +5,15 @@
 # Create a lock file.
 
 if [ $# -eq 0 ]; then
-  broken="$(
+  broken=$(
     ls "${work_dir}/package-states" | \
       grep '\.broken$'
-  )"
-  broken="$(
+  )
+  broken=$(
     echo "${broken}" | \
       sed 's|\(\.[^.]\+\)\{4\}$||' | \
       sort -u
-  )"
+  )
   "$0" ${broken} || \
     exit $?
   (
@@ -45,7 +45,7 @@ if ! flock -n 9; then
   exit
 fi
 
-tmp_dir="$(mktemp -d)"
+tmp_dir=$(mktemp -d)
 trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
 sort -u "${work_dir}/build-order" | \
@@ -97,7 +97,7 @@ for target_package in "$@"; do
     "${tmp_dir}/knots"
 
   last_sum=''
-  current_sum="$(sha512sum "${tmp_dir}/build-order")"
+  current_sum=$(sha512sum "${tmp_dir}/build-order")
   while ! [ "${last_sum}" = "${current_sum}" ]; do
 
     last_sum="${current_sum}"
@@ -119,7 +119,7 @@ for target_package in "$@"; do
     sort -u "${tmp_dir}/build-order" | \
       sponge "${tmp_dir}/build-order"
 
-    current_sum="$(sha512sum "${tmp_dir}/build-order")"
+    current_sum=$(sha512sum "${tmp_dir}/build-order")
 
   done
 
@@ -226,10 +226,10 @@ for target_package in "$@"; do
     '}' >> \
     "${tmp_dir}/input"
 
-  line_count="$(wc -l < "${tmp_dir}/input")"
+  line_count=$(wc -l < "${tmp_dir}/input")
   if [ "${line_count}" -gt 500 ]; then
     sed -i '/"base\(-devel\)\?"/d' "${tmp_dir}/input"
-    line_count="$(wc -l < "${tmp_dir}/input")"
+    line_count=$(wc -l < "${tmp_dir}/input")
     if [ "${line_count}" -gt 700 ]; then
       rm -f "${output}"
       >&2 printf 'Skipping graph for "%s" - would be too big (%d).\n' \
diff --git a/bin/why_dont_you b/bin/why_dont_you
index 51f2e4a..04e717a 100755
--- a/bin/why_dont_you
+++ b/bin/why_dont_you
@@ -26,7 +26,7 @@ case "${action}" in
             continue
           fi
 
-          unmet_dependencies="$(find_dependencies_on_build_list "${package}" "${git_revision}" "${mod_git_revision}" "${repository}")"
+          unmet_dependencies=$(find_dependencies_on_build_list "${package}" "${git_revision}" "${mod_git_revision}" "${repository}")
           if [ -n "${unmet_dependencies}" ]; then
             printf '"%s" has unmet dependencies:\n' "${package}"
             echo "${unmet_dependencies}" | \
@@ -66,16 +66,16 @@ case "${action}" in
         continue
       fi
 
-      dependent_packages="$(
+      dependent_packages=$(
         grep -lxF "${pkg}" "${work_dir}/package-infos/"*".depends" | \
           sed '
             s|^.*/||
             s|\.depends$||
           '
-      )"
+      )
 
-      build_list_items_file="$(mktemp)"
-      dependent_packages_file="$(mktemp)"
+      build_list_items_file=$(mktemp)
+      dependent_packages_file=$(mktemp)
 
       grep -vxF 'break_loops' "${work_dir}/build-list" | \
         awk '{print $1 "." $2 "." $3 "." $4}' | \
@@ -86,11 +86,11 @@ case "${action}" in
         sort -u > \
         "${dependent_packages_file}"
 
-      dependent_still_on_build_list="$(
+      dependent_still_on_build_list=$(
         join -1 1 -2 1 -o 1.1 \
           "${build_list_items_file}" \
           "${dependent_packages_file}"
-      )"
+      )
 
       rm -f \
         "${build_list_items_file}" \
@@ -103,14 +103,14 @@ case "${action}" in
         continue
       fi
 
-      dependent_still_in_staging="$(
+      dependent_still_in_staging=$(
         echo "${dependent_packages}" | \
           while read -r sf; do
             if [ -f "${work_dir}/package-states/${sf}.done" ]; then
               echo "${sf}"
             fi
           done
-      )"
+      )
 
       if [ -n "${dependent_still_in_staging}" ]; then
         printf 'The following packages are dependent on "%s" and still in staging - maybe they cannot be unstaged:\n' "${pkg}"
@@ -127,15 +127,15 @@ case "${action}" in
 
   'keep')
 
-    tmp_file="$(mktemp)"
+    tmp_file=$(mktemp)
     trap 'rm -f "${tmp_file}"' EXIT
 
     while read -r pkg; do
 
-      if builds_file="$(
+      if builds_file=$(
         ls "${work_dir}/package-infos" | \
           grep -m1 "^$(str_to_regex "${pkg}")\(\.[^.]\+\)\{3\}\.builds\$"
-        )"; then
+        ); then
 
         builds_file="${builds_file%.*}"
         prepo="${builds_file##*.}"
@@ -147,23 +147,23 @@ case "${action}" in
       else
 
         found_PKGBUILD=false
-        mod_rev="$(cat "${work_dir}/archlinux32.revision")"
+        mod_rev=$(cat "${work_dir}/archlinux32.revision")
         for repo in ${repo_names}; do
           eval 'repo_path="${repo_paths__'"${repo}"'}"'
-          rev="$(cat "${work_dir}/${repo}.revision")"
+          rev=$(cat "${work_dir}/${repo}.revision")
           if [ "${repo}" = 'archlinux32' ]; then
             if git -C "${repo_path}" archive "${mod_rev}" | \
               grep -q "^[^/]\+/$(str_to_regex "${pkg}")/PKGBUILD\$"; then
-              prepo="$(
+              prepo=$(
                 git -C "${repo_path}" archive "${mod_rev}" | \
                   grep "^[^/]\+/$(str_to_regex "${pkg}")/PKGBUILD\$" | \
                   cut -d/ -f1
-              )"
+              )
               found_PKGBUILD=true
               break
             fi
           else
-            prepo="$(
+            prepo=$(
               git -C "${repo_path}" archive "${rev}" -- "${pkg}/repos" 2>/dev/null | \
                 tar -t 2> /dev/null | \
                 grep '^[^/]\+/repos/[^/]\+/PKGBUILD$' | \
@@ -173,7 +173,7 @@ case "${action}" in
                   s|^[^/]\+/repos/\([^/]\+\)-[^/-]\+/PKGBUILD$|\1|
                 ' | \
                 head -n1
-            )"
+            )
             if [ -n "${prepo}" ]; then
               found_PKGBUILD=true
               break
@@ -216,21 +216,21 @@ case "${action}" in
         continue
       fi
 
-      if ! needs="$(
+      if ! needs=$(
           ls "${work_dir}/package-infos" | \
             grep "^$(str_to_regex "${pkg}")\..*\.needs\$"
-        )"; then
+        ); then
         printf 'Package "%s" was deleted in the git repositories.\n' "${pkg}"
         continue
       fi
 
-      needs="$(
+      needs=$(
         printf "${work_dir}/package-infos/%s\n" ${needs} | \
           xargs -r cat | \
           sort -u
-      )"
+      )
 
-      errors="$(
+      errors=$(
         (
           printf '%s\n' ${needs}
           awk '{print $3}' "${tmp_file}" | \
@@ -239,7 +239,7 @@ case "${action}" in
           sort | \
           uniq -d | \
           join -1 1 -2 3 -o 2.1,2.2,2.3 - "${tmp_file}"
-      )"
+      )
       if [ -n "${errors}" ]; then
         printf 'Package "%s" has dependencies on the deletion list:\n' "${pkg}"
         printf '%s %s %s\n' ${errors}