diff --git a/modules/git/README.md b/modules/git/README.md
index a97cbc0..84fc859 100644
--- a/modules/git/README.md
+++ b/modules/git/README.md
@@ -66,26 +66,26 @@ zstyle ':prezto:module:git:alias' skip 'yes'
 ### Commit (c)
 
 - `gc` records changes to the repository.
+- `gcS` records changes to the repository. (Signed)
 - `gca` stages all modified and deleted files.
+- `gcaS` stages all modified and deleted files. (Signed)
 - `gcm` records changes to the repository with the given message.
-- `gcS` records changes to the repository. (Signed)
-- `gcSa` stages all modified and deleted files. (Signed)
-- `gcSm` records changes to the repository with the given message. (Signed)
+- `gcmS` records changes to the repository with the given message. (Signed)
 - `gcam` stages all modified and deleted files, and records changes to the
   repository with the given message.
 - `gco` checks out a branch or paths to work tree.
 - `gcO` checks out hunks from the index or the tree interactively.
 - `gcf` amends the tip of the current branch using the same log message as
   _HEAD_.
-- `gcSf` amends the tip of the current branch using the same log message as
+- `gcfS` amends the tip of the current branch using the same log message as
   _HEAD_. (Signed)
 - `gcF` amends the tip of the current branch.
-- `gcSF` amends the tip of the current branch. (Signed)
+- `gcFS` amends the tip of the current branch. (Signed)
 - `gcp` applies changes introduced by existing commits.
 - `gcP` applies changes introduced by existing commits without committing.
 - `gcr` reverts existing commits by reverting patches and recording new commits.
 - `gcR` removes the _HEAD_ commit.
-- `gcs` displays various types of objects.
+- `gcs` displays commits with various objects.
 - `gcsS` displays commits with GPG signature.
 - `gcl` lists lost commits.
 - `gcy` displays commits yet to be applied to upstream in the short format.
diff --git a/modules/git/alias.zsh b/modules/git/alias.zsh
index 95b2a0d..f9d4b14 100644
--- a/modules/git/alias.zsh
+++ b/modules/git/alias.zsh
@@ -8,25 +8,24 @@
 #
 # Settings
 #
-#
 
 # Log
 zstyle -s ':prezto:module:git:log:medium' format '_git_log_medium_format' \
-  || _git_log_medium_format='%C(bold)Commit:%C(reset) %C(green)%H%C(red)%d%n%C(bold)Author:%C(reset) %C(cyan)%an <%ae>%n%C(bold)Date:%C(reset)   %C(blue)%ai (%ar)%C(reset)%n%+B'
+    || _git_log_medium_format='%C(bold)Commit:%C(reset) %C(green)%H%C(red)%d%n%C(bold)Author:%C(reset) %C(cyan)%an <%ae>%n%C(bold)Date:%C(reset)   %C(blue)%ai (%ar)%C(reset)%n%+B'
 zstyle -s ':prezto:module:git:log:oneline' format '_git_log_oneline_format' \
-  || _git_log_oneline_format='%C(green)%h%C(reset) %s%C(red)%d%C(reset)%n'
+    || _git_log_oneline_format='%C(green)%h%C(reset) %s%C(red)%d%C(reset)%n'
 zstyle -s ':prezto:module:git:log:brief' format '_git_log_brief_format' \
-  || _git_log_brief_format='%C(green)%h%C(reset) %s%n%C(blue)(%ar by %an)%C(red)%d%C(reset)%n'
+    || _git_log_brief_format='%C(green)%h%C(reset) %s%n%C(blue)(%ar by %an)%C(red)%d%C(reset)%n'
 
 # Status
 zstyle -s ':prezto:module:git:status:ignore' submodules '_git_status_ignore_submodules' \
-  || _git_status_ignore_submodules='none'
+    || _git_status_ignore_submodules='none'
 
 #
 # Aliases
 #
 
-if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
+if ! zstyle -t ':prezto:module:git:alias' skip; then
   # Git
   alias g='git'
 
@@ -51,18 +50,18 @@ if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
 
   # Commit (c)
   alias gc='git commit --verbose'
+  alias gcS='git commit --verbose --gpg-sign'
   alias gca='git commit --verbose --all'
+  alias gcaS='git commit --verbose --all --gpg-sign'
   alias gcm='git commit --message'
-  alias gcS='git commit -S --verbose'
-  alias gcSa='git commit -S --verbose --all'
-  alias gcSm='git commit -S --message'
+  alias gcmS='git commit --message --gpg-sign'
   alias gcam='git commit --all --message'
   alias gco='git checkout'
   alias gcO='git checkout --patch'
   alias gcf='git commit --amend --reuse-message HEAD'
-  alias gcSf='git commit -S --amend --reuse-message HEAD'
+  alias gcfS='git commit --amend --reuse-message HEAD --gpg-sign'
   alias gcF='git commit --verbose --amend'
-  alias gcSF='git commit -S --verbose --amend'
+  alias gcFS='git commit --verbose --amend --gpg-sign'
   alias gcp='git cherry-pick --ff'
   alias gcP='git cherry-pick --no-commit'
   alias gcr='git revert'
@@ -70,8 +69,8 @@ if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
   alias gcs='git show'
   alias gcsS='git show --pretty=short --show-signature'
   alias gcl='git-commit-lost'
-  alias gcy='git cherry -v --abbrev'
-  alias gcY='git cherry -v'
+  alias gcy='git cherry --verbose --abbrev'
+  alias gcY='git cherry --verbose'
 
   # Conflict (C)
   alias gCl='git --no-pager diff --name-only --diff-filter=U'
@@ -183,15 +182,15 @@ if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
   alias gir='git reset'
   alias giR='git reset --patch'
   alias gix='git rm -r --cached'
-  alias giX='git rm -rf --cached'
+  alias giX='git rm -r --force --cached'
 
   # Log (l)
-  alias gl='git log --topo-order --pretty=format:"${_git_log_medium_format}"'
-  alias gls='git log --topo-order --stat --pretty=format:"${_git_log_medium_format}"'
-  alias gld='git log --topo-order --stat --patch --full-diff --pretty=format:"${_git_log_medium_format}"'
-  alias glo='git log --topo-order --pretty=format:"${_git_log_oneline_format}"'
-  alias glg='git log --topo-order --graph --pretty=format:"${_git_log_oneline_format}"'
-  alias glb='git log --topo-order --pretty=format:"${_git_log_brief_format}"'
+  alias gl='git log --topo-order --pretty=format:"$_git_log_medium_format"'
+  alias gls='git log --topo-order --stat --pretty=format:"$_git_log_medium_format"'
+  alias gld='git log --topo-order --stat --patch --full-diff --pretty=format:"$_git_log_medium_format"'
+  alias glo='git log --topo-order --pretty=format:"$_git_log_oneline_format"'
+  alias glg='git log --topo-order --graph --pretty=format:"$_git_log_oneline_format"'
+  alias glb='git log --topo-order --pretty=format:"$_git_log_brief_format"'
   alias glc='git shortlog --summary --numbered'
   alias glS='git log --show-signature'
 
@@ -258,19 +257,19 @@ if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
 
   # Tag (t)
   alias gt='git tag'
-  alias gtl='git tag -l'
-  alias gts='git tag -s'
+  alias gtl='git tag --list'
+  alias gts='git tag --sign'
   alias gtv='git verify-tag'
 
   # Working Copy (w)
-  alias gws='git status --ignore-submodules=${_git_status_ignore_submodules} --short'
-  alias gwS='git status --ignore-submodules=${_git_status_ignore_submodules}'
+  alias gws='git status --ignore-submodules=$_git_status_ignore_submodules --short'
+  alias gwS='git status --ignore-submodules=$_git_status_ignore_submodules'
   alias gwd='git diff --no-ext-diff'
   alias gwD='git diff --no-ext-diff --word-diff'
   alias gwr='git reset --soft'
   alias gwR='git reset --hard'
-  alias gwc='git clean -n'
-  alias gwC='git clean -f'
+  alias gwc='git clean --dry-run'
+  alias gwC='git clean --force'
   alias gwx='git rm -r'
-  alias gwX='git rm -rf'
+  alias gwX='git rm -r --force'
 fi
diff --git a/modules/git/functions/git-info b/modules/git/functions/git-info
index 20c284b..af0bea5 100644
--- a/modules/git/functions/git-info
+++ b/modules/git/functions/git-info
@@ -22,20 +22,22 @@ function _git-action {
   local revert_sequence_formatted
 
   for action_dir in \
-    "${git_dir}/rebase-apply" \
-    "${git_dir}/rebase" \
-    "${git_dir}/../.dotest"
+    "$git_dir/rebase-apply" \
+    "$git_dir/rebase" \
+    "$git_dir/../.dotest"
   do
     if [[ -d "$action_dir" ]] ; then
-      zstyle -s ':prezto:module:git:info:action:apply' format 'apply_formatted' || apply_formatted='apply'
-      zstyle -s ':prezto:module:git:info:action:rebase' format 'rebase_formatted' || rebase_formatted='rebase'
+      zstyle -s ':prezto:module:git:info:action:apply' format 'apply_formatted' \
+          || apply_formatted='apply'
+      zstyle -s ':prezto:module:git:info:action:rebase' format 'rebase_formatted' \
+          || rebase_formatted='rebase'
 
-      if [[ -f "${action_dir}/rebasing" ]] ; then
+      if [[ -f "$action_dir/rebasing" ]] ; then
         print "$rebase_formatted"
-      elif [[ -f "${action_dir}/applying" ]] ; then
+      elif [[ -f "$action_dir/applying" ]] ; then
         print "$apply_formatted"
       else
-        print "${rebase_formatted}/${apply_formatted}"
+        print "$rebase_formatted/$apply_formatted"
       fi
 
       return 0
@@ -43,59 +45,67 @@ function _git-action {
   done
 
   for action_dir in \
-    "${git_dir}/rebase-merge/interactive" \
-    "${git_dir}/.dotest-merge/interactive"
+    "$git_dir/rebase-merge/interactive" \
+    "$git_dir/.dotest-merge/interactive"
   do
     if [[ -f "$action_dir" ]]; then
-      zstyle -s ':prezto:module:git:info:action:rebase-interactive' format 'rebase_interactive_formatted' || rebase_interactive_formatted='rebase-interactive'
+      zstyle -s ':prezto:module:git:info:action:rebase-interactive' format 'rebase_interactive_formatted' \
+          || rebase_interactive_formatted='rebase-interactive'
       print "$rebase_interactive_formatted"
       return 0
     fi
   done
 
   for action_dir in \
-    "${git_dir}/rebase-merge" \
-    "${git_dir}/.dotest-merge"
+    "$git_dir/rebase-merge" \
+    "$git_dir/.dotest-merge"
   do
     if [[ -d "$action_dir" ]]; then
-      zstyle -s ':prezto:module:git:info:action:rebase-merge' format 'rebase_merge_formatted' || rebase_merge_formatted='rebase-merge'
+      zstyle -s ':prezto:module:git:info:action:rebase-merge' format 'rebase_merge_formatted' \
+          || rebase_merge_formatted='rebase-merge'
       print "$rebase_merge_formatted"
       return 0
     fi
   done
 
-  if [[ -f "${git_dir}/MERGE_HEAD" ]]; then
-    zstyle -s ':prezto:module:git:info:action:merge' format 'merge_formatted' || merge_formatted='merge'
+  if [[ -f "$git_dir/MERGE_HEAD" ]]; then
+    zstyle -s ':prezto:module:git:info:action:merge' format 'merge_formatted' \
+        || merge_formatted='merge'
     print "$merge_formatted"
     return 0
   fi
 
-  if [[ -f "${git_dir}/CHERRY_PICK_HEAD" ]]; then
-    if [[ -d "${git_dir}/sequencer" ]] ; then
-      zstyle -s ':prezto:module:git:info:action:cherry-pick-sequence' format 'cherry_pick_sequence_formatted' || cherry_pick_sequence_formatted='cherry-pick-sequence'
+  if [[ -f "$git_dir/CHERRY_PICK_HEAD" ]]; then
+    if [[ -d "$git_dir/sequencer" ]] ; then
+      zstyle -s ':prezto:module:git:info:action:cherry-pick-sequence' format 'cherry_pick_sequence_formatted' \
+          || cherry_pick_sequence_formatted='cherry-pick-sequence'
       print "$cherry_pick_sequence_formatted"
     else
-      zstyle -s ':prezto:module:git:info:action:cherry-pick' format 'cherry_pick_formatted' || cherry_pick_formatted='cherry-pick'
+      zstyle -s ':prezto:module:git:info:action:cherry-pick' format 'cherry_pick_formatted' \
+          || cherry_pick_formatted='cherry-pick'
       print "$cherry_pick_formatted"
     fi
 
     return 0
   fi
 
-  if [[ -f "${git_dir}/REVERT_HEAD" ]]; then
-    if [[ -d "${git_dir}/sequencer" ]] ; then
-      zstyle -s ':prezto:module:git:info:action:revert-sequence' format 'revert_sequence_formatted' || revert_sequence_formatted='revert-sequence'
+  if [[ -f "$git_dir/REVERT_HEAD" ]]; then
+    if [[ -d "$git_dir/sequencer" ]] ; then
+      zstyle -s ':prezto:module:git:info:action:revert-sequence' format 'revert_sequence_formatted' \
+          || revert_sequence_formatted='revert-sequence'
       print "$revert_sequence_formatted"
     else
-      zstyle -s ':prezto:module:git:info:action:revert' format 'revert_formatted' || revert_formatted='revert'
+      zstyle -s ':prezto:module:git:info:action:revert' format 'revert_formatted' \
+          || revert_formatted='revert'
       print "$revert_formatted"
     fi
 
     return 0
   fi
 
-  if [[ -f "${git_dir}/BISECT_LOG" ]]; then
-    zstyle -s ':prezto:module:git:info:action:bisect' format 'bisect_formatted' || bisect_formatted='bisect'
+  if [[ -f "$git_dir/BISECT_LOG" ]]; then
+    zstyle -s ':prezto:module:git:info:action:bisect' format 'bisect_formatted' \
+        || bisect_formatted='bisect'
     print "$bisect_formatted"
     return 0
   fi
diff --git a/modules/git/functions/git-stash-dropped b/modules/git/functions/git-stash-dropped
index d9e759e..142a4a7 100644
--- a/modules/git/functions/git-stash-dropped
+++ b/modules/git/functions/git-stash-dropped
@@ -16,7 +16,7 @@ command git fsck --unreachable 2> /dev/null \
   | grep 'commit' \
   | awk '{print $3}' \
   | command git log \
-      --pretty=format:${_git_log_oneline_format} \
+      --pretty=format:$_git_log_oneline_format \
       --extended-regexp \
       --grep="${1:-(WIP )?[Oo]n [^:]+:}" \
       --merges \