De-conflict the sed helper, get add working

label

@@ -1,5 +1,7 @@
 #!/usr/bin/env zsh
 
+set -ex
+
 : "${1:=--help}"
 
 case "$1" in
@@ -15,20 +17,21 @@ EOF
 
   add)
     label rm "$2"
-    _sed -i '' -e '$a\' `_goto_file` # Fix potentially missing last newline
-    printf '%s %s\n' "${1}" $(echo "$2" | _sed "s^${HOME}^~^g") >> `_goto_file`
+    _zsh_goto_sed -i '/^$/d' "$(_goto_file)" # Remove empty lines
+    _zsh_goto_sed -i -e '$a\' "$(_goto_file)" # Fix potentially missing last newline
+    printf '%s %s\n' "${1}" $(echo "$2" | _zsh_goto_sed "s^${HOME}^~^g") >> "$(_goto_file)"
     ;;
 
   get)
-    realpath "$(_awk "/^$2\s/ {print \$2;exit}" `_goto_file` | _sed "s|^~|$HOME|")"
+    realpath "$(_awk "/^$2\s/ {print \$2;exit}" `_goto_file` | _zsh_goto_sed "s|^~|$HOME|")"
     ;;
 
   rm)
-    _sed -i "^$2^d" `_goto_file`
+    _zsh_goto_sed -i "/$2/d" "$(_goto_file)"
     ;;
 
   ls)
-    _awk '{print $1;}' `_goto_file`
+    _awk '{print $1;}' "$(_goto_file)"
     ;;
 
   *)