diff --git a/src/main.sh b/src/main.sh
index 816b608..66a58c4 100755
--- a/src/main.sh
+++ b/src/main.sh
@@ -376,15 +376,15 @@ mpv_start
 # argument: string
 # The argument is stored in $FZF_LIST_LABEL. To set the argument, call
 # `change-list-label($arg)`.
-IN_NORMAL_MODE="[ \"\$FZF_INPUT_STATE\" = \"hidden\" ]"
-IN_VIEW_PATTERN="[ \"\$FZF_BORDER_LABEL\" = \"%s\" ]"
+IN_NORMAL_MODE="[ \$FZF_INPUT_STATE = hidden ]"
+IN_VIEW_PATTERN="[ \$FZF_BORDER_LABEL = %s ]"
 IN_LIST_ARTISTS_VIEW="$(printf "$IN_VIEW_PATTERN" "$VIEW_LIST_ARTISTS")"
 IN_LIST_ALBUMS_VIEW="$(printf "$IN_VIEW_PATTERN" "$VIEW_LIST_ALBUMS")"
 IN_SEARCH_ARTIST_VIEW="$(printf "$IN_VIEW_PATTERN" "$VIEW_SEARCH_ARTIST")"
 IN_SEARCH_ALBUM_VIEW="$(printf "$IN_VIEW_PATTERN" "$VIEW_SEARCH_ALBUM")"
 FZF_CURRENT_MODE="\$FZF_INPUT_STATE"
 FZF_CURRENT_VIEW="\$FZF_BORDER_LABEL"
-PUT_FZF_KEY_LOGIC="case \"\$FZF_KEY\" in \"space\") echo \"put( )\";; \"left\") echo \"backward-char\";; \"right\") echo \"forward-char\";; \"backspace\"|\"bspace\"|\"bs\") echo \"backward-delete-char\";; \"delete\"|\"del\") echo \"delete-char\";; *) echo \"put(\$FZF_KEY)\";; esac"
+PUT_FZF_KEY_LOGIC="case \$FZF_KEY in space) echo \"put( )\";; left) echo backward-char;; right) echo forward-char;; backspace|bspace|bs) echo backward-delete-char;; delete|del) echo delete-char;; *) echo \"put(\$FZF_KEY)\";; esac"
 while true; do
   case "$VIEW" in
   "$VIEW_SELECT_ARTIST")
@@ -450,16 +450,16 @@ $KEYS_FILTER_LOCAL:transform:$0 --fzf-key {2} {3} {4}" \
         --header-first \
         --header-border="bottom" \
         --bind="start:transform:$0 --draw $MODE $VIEW $MBID" \
-        --bind="$KEYS_I_NORMAL:transform:$IN_NORMAL_MODE || echo \"hide-input\"" \
-        --bind="$KEYS_N_INSERT:transform:$IN_NORMAL_MODE && echo \"show-input\" || $PUT_FZF_KEY_LOGIC" \
+        --bind="$KEYS_I_NORMAL:transform:$IN_NORMAL_MODE || echo hide-input" \
+        --bind="$KEYS_N_INSERT:transform:$IN_NORMAL_MODE && echo show-input || $PUT_FZF_KEY_LOGIC" \
         --bind="$KEYS_DOWN:down" \
         --bind="$KEYS_UP:up" \
         --bind="$KEYS_HALFPAGE_DOWN:half-page-down" \
         --bind="$KEYS_HALFPAGE_UP:half-page-up" \
-        --bind="$KEYS_N_DOWN:transform:$IN_NORMAL_MODE && echo \"down\" || $PUT_FZF_KEY_LOGIC" \
-        --bind="$KEYS_N_UP:transform:$IN_NORMAL_MODE && echo \"up\" || $PUT_FZF_KEY_LOGIC" \
-        --bind="$KEYS_N_BOT:transform:$IN_NORMAL_MODE && echo \"last\" || $PUT_FZF_KEY_LOGIC" \
-        --bind="$KEYS_N_TOP:transform:$IN_NORMAL_MODE && echo \"first\" || $PUT_FZF_KEY_LOGIC" \
+        --bind="$KEYS_N_DOWN:transform:$IN_NORMAL_MODE && echo down || $PUT_FZF_KEY_LOGIC" \
+        --bind="$KEYS_N_UP:transform:$IN_NORMAL_MODE && echo up || $PUT_FZF_KEY_LOGIC" \
+        --bind="$KEYS_N_BOT:transform:$IN_NORMAL_MODE && echo last || $PUT_FZF_KEY_LOGIC" \
+        --bind="$KEYS_N_TOP:transform:$IN_NORMAL_MODE && echo first || $PUT_FZF_KEY_LOGIC" \
         --bind="$KEYS_IN:transform:[ {3} ] && $0 --draw $FZF_CURRENT_MODE $FZF_CURRENT_VIEW {3} \"+1\"" \
         --bind="$KEYS_OUT:transform:[ {2} ] && $0 --draw $FZF_CURRENT_MODE $FZF_CURRENT_VIEW {2} \"-1\"" \
         --bind="$KEYS_N_IN:transform:$IN_NORMAL_MODE && ([ {3} ] && $0 --draw $FZF_CURRENT_MODE $FZF_CURRENT_VIEW {3} \"+1\") || $PUT_FZF_KEY_LOGIC" \
@@ -469,26 +469,26 @@ $KEYS_FILTER_LOCAL:transform:$0 --fzf-key {2} {3} {4}" \
         --bind="$KEYS_LIST_ALBUMS:transform:$0 --draw \$FZF_INPUT_STATE $VIEW_LIST_ALBUMS" \
         --bind="$KEYS_SEARCH_ARTIST:transform:$0 --draw $MODE_INSERT $VIEW_SEARCH_ARTIST" \
         --bind="$KEYS_SEARCH_ALBUM:transform:$0 --draw $MODE_INSERT $VIEW_SEARCH_ALBUM" \
-        --bind="$KEYS_SWITCH_ARTIST_ALBUM:transform:case \"$FZF_CURRENT_VIEW\" in
-\"$VIEW_LIST_ARTISTS\") $0 --draw $FZF_CURRENT_MODE $VIEW_LIST_ALBUMS ;;
-\"$VIEW_LIST_ALBUMS\") $0 --draw $FZF_CURRENT_MODE $VIEW_LIST_ARTISTS ;;
-\"$VIEW_SEARCH_ARTIST\") $0 --draw $MODE_INSERT $VIEW_SEARCH_ALBUM ;;
-\"$VIEW_SEARCH_ALBUM\") $0 --draw $MODE_INSERT $VIEW_SEARCH_ARTIST ;;
+        --bind="$KEYS_SWITCH_ARTIST_ALBUM:transform:case $FZF_CURRENT_VIEW in
+$VIEW_LIST_ARTISTS) $0 --draw $FZF_CURRENT_MODE $VIEW_LIST_ALBUMS ;;
+$VIEW_LIST_ALBUMS) $0 --draw $FZF_CURRENT_MODE $VIEW_LIST_ARTISTS ;;
+$VIEW_SEARCH_ARTIST) $0 --draw $MODE_INSERT $VIEW_SEARCH_ALBUM ;;
+$VIEW_SEARCH_ALBUM) $0 --draw $MODE_INSERT $VIEW_SEARCH_ARTIST ;;
 esac" \
-        --bind="$KEYS_SWITCH_LOCAL_REMOTE:transform:case \"$FZF_CURRENT_VIEW\" in
-\"$VIEW_LIST_ARTISTS\") $0 --draw $MODE_INSERT $VIEW_SEARCH_ARTIST ;;
-\"$VIEW_LIST_ALBUMS\") $0 --draw $MODE_INSERT $VIEW_SEARCH_ALBUM ;;
-\"$VIEW_SEARCH_ARTIST\") $0 --draw $MODE_NORMAL $VIEW_LIST_ARTISTS ;;
-\"$VIEW_SEARCH_ALBUM\") $0 --draw $MODE_NORMAL $VIEW_LIST_ALBUMS ;;
+        --bind="$KEYS_SWITCH_LOCAL_REMOTE:transform:case $FZF_CURRENT_VIEW in
+$VIEW_LIST_ARTISTS) $0 --draw $MODE_INSERT $VIEW_SEARCH_ARTIST ;;
+$VIEW_LIST_ALBUMS) $0 --draw $MODE_INSERT $VIEW_SEARCH_ALBUM ;;
+$VIEW_SEARCH_ARTIST) $0 --draw $MODE_NORMAL $VIEW_LIST_ARTISTS ;;
+$VIEW_SEARCH_ALBUM) $0 --draw $MODE_NORMAL $VIEW_LIST_ALBUMS ;;
 esac" \
         --bind="$KEYS_FILTER:transform:$0 --filter $FZF_CURRENT_MODE $FZF_CURRENT_VIEW" \
         --bind="$KEYS_BROWSE:execute-silent:
 [ {3} ] || exit 0
-case \"\$FZF_BORDER_LABEL\" in
-  \"$VIEW_LIST_ARTISTS\" | \"$VIEW_SEARCH_ARTIST\") t=\"artist\" ;;
-  \"$VIEW_ARTIST\" | \"$VIEW_SEARCH_ALBUM\" | \"$VIEW_LIST_ALBUMS\") t=\"release-group\" ;;
-  \"$VIEW_RELEASEGROUP\") t=\"release\" ;;
-  \"$VIEW_RELEASE\") t=\"track\" ;;
+case \$FZF_BORDER_LABEL in
+  $VIEW_LIST_ARTISTS | $VIEW_SEARCH_ARTIST) t=artist ;;
+  $VIEW_ARTIST | $VIEW_SEARCH_ALBUM | $VIEW_LIST_ALBUMS) t=release-group ;;
+  $VIEW_RELEASEGROUP) t=release ;;
+  $VIEW_RELEASE) t=track ;;
 esac
 open \"https://musicbrainz.org/\$t/{r3}\"" \
         --bind="$KEYS_OPEN:execute-silent: