diff --git a/lefthook.yaml b/lefthook.yaml
index d1369fa..4410eea 100644
--- a/lefthook.yaml
+++ b/lefthook.yaml
@@ -1,11 +1,14 @@
+---
 skip_output: [meta, success]
 no_tty: true
+
 commit-msg:
   commands:
     lint:convco:
       run: cat {1} | convco check --from-stdin
     lint:typos:
       run: cat {1} | typos -
+
 pre-commit:
   parallel: false
   commands:
@@ -13,10 +16,11 @@ pre-commit:
       run: typos {staged_files}
     shellcheck:
       glob: "*.sh"
-      run: shellcheck {staged_files}
+      run: shellcheck {staged_files}  
     shfmt:
       glob: "*.sh"
-      run: shfmt -d -ln bash -i 2 {staged_files}
+      run: shfmt -d -ln bash -i 4 {staged_files}
+
 pre-push:
   parallel: false
   commands:
diff --git a/modules/home-manager/audio/cmus/files/notify.sh b/modules/home-manager/audio/cmus/files/notify.sh
index afc5b1d..f22f261 100755
--- a/modules/home-manager/audio/cmus/files/notify.sh
+++ b/modules/home-manager/audio/cmus/files/notify.sh
@@ -3,73 +3,73 @@
 NOTIFICATION_PROGRAM='mako'
 
 process_args() {
-  while [ "$#" -ge 2 ]; do
-    printf -v "$1" "%s" "$2"
-    shift
-    shift
-  done
+    while [ "$#" -ge 2 ]; do
+        printf -v "$1" "%s" "$2"
+        shift
+        shift
+    done
 }
 
 escape() {
-  local string
-  string=$1
-  string=${string//"&"/"&"}
-  string=${string//"<"/"&lt;"}
-  string=${string//">"/"&gt;"}
-  printf "%s" "$string"
+    local string
+    string=$1
+    string=${string//"<"/"&lt;"}
+    string=${string//">"/"&gt;"}
+    string=${string//"&"/"&amp;"}
+    printf "%s" "$string"
 }
 
 # Just quit this application if our notification program does not exist
 # With this notification will not be displayed on my work laptop. Avoid
 # notification pollution!
 check_notification_program() {
-  if ! command -v "$NOTIFICATION_PROGRAM"; then
-    exit 0
-  fi
+    if ! command -v "$NOTIFICATION_PROGRAM"; then
+        exit 0
+    fi
 }
 
 main() {
-  options=(--app-name=cmus --transient -u low)
-  filename=${file##*/}
-  path=${file%/*}
+    options=(--app-name=cmus --transient -u low)
+    filename=${file##*/}
+    path=${file%/*}
 
-  if [[ -f "${path}/cover.png" ]]; then
-    options+=(-i "${path}/cover.png")
-  fi
-
-  if [[ -f "${path}/cover.jpg" ]]; then
-    options+=(-i "${path}/cover.jpg")
-  fi
-
-  ## Get title or filename
-  title=${title:-$filename}
-  if [[ ${#title} -gt 25 ]]; then
-    title="${title:0:24}…"
-  fi
-  title="<b>$(escape "$title")</b>"
-
-  if [ -n "$artist" ]; then
-    if [[ ${#artist} -gt 22 ]]; then
-      artist="${artist:0:21}…"
+    if [[ -f "${path}/cover.png" ]]; then
+        options+=(-i "${path}/cover.png")
     fi
-    printf -v l_artist "<span size='x-large'>by </span>%s" "$(escape "$artist")"
-  fi
 
-  if [ -n "$date" ]; then
-    date="${date%%-*}"
-  fi
-
-  # Get Album
-  if [ -n "$album" ]; then
-    if [[ ${#album} -gt 19 ]]; then
-      album="${album:0:19}…"
+    if [[ -f "${path}/cover.jpg" ]]; then
+        options+=(-i "${path}/cover.jpg")
     fi
-    printf -v l_album "<span size='x-large'>on </span>%-20s <span size='x-large'>%s</span>" "$(escape "$album")" "${date:-}"
-  fi
 
-  printf -v l_intro "<span variant='small-caps'>cmus:<b>%s</b></span>" "$(escape "$status")"
-  printf -v body "%s\n" "${l_intro:-}" "${title:-}" "${l_artist:-}" "${l_album:-}"
-  notify-send "${options[@]}" "useless" "$body"
+    ## Get title or filename
+    title=${title:-$filename}
+    if [[ ${#title} -gt 25 ]]; then
+        title="${title:0:24}…"
+    fi
+    title="<b>$title</b>"
+
+    if [ -n "$artist" ]; then
+        if [[ ${#artist} -gt 22 ]]; then
+            artist="${artist:0:21}…"
+        fi
+        printf -v l_artist "<span size='x-large'>by </span>%s" "$(escape "$artist")"
+    fi
+
+    if [ -n "$date" ]; then
+        date="${date%%-*}"
+    fi
+
+    # Get Album
+    if [ -n "$album" ]; then
+        if [[ ${#album} -gt 19 ]]; then
+            album="${album:0:19}…"
+        fi
+        printf -v l_album "<span size='x-large'>on </span>%-20s <span size='x-large'>%s</span>" "$(escape "$album")" "${date:-}"
+    fi
+
+    printf -v l_intro "<span variant='small-caps'>cmus:<b>%s</b></span>" "$(escape "$status")"
+    printf -v body "%s\n" "${l_intro:-}" "${title:-}" "${l_artist:-}" "${l_album:-}"
+    notify-send "${options[@]}" "useless" "$body"
 }
 
 check_notification_program