diff --git a/home/lf/default.nix b/home/lf/default.nix
index bc392a2..b3751cc 100644
--- a/home/lf/default.nix
+++ b/home/lf/default.nix
@@ -11,6 +11,19 @@ in {
     enable = true;
     previewer.source = pv;
     settings.icons = true;
+    commands = {
+      get-mime-type = ''%xdg-mime query filetype "$f"'';
+      open = ''
+        ''${{
+            test -L $f && f=$(readlink -f $f)
+            case $(file --mime-type $f -b) in
+                text/*) vi $fx;;
+                application/json) vi $fx;;
+                *) for f in $fx; do xdg-open $f > /dev/null 2> /dev/null & done;;
+            esac
+        }}
+      '';
+    };
     extraConfig = ''
       set cleaner ${cleaner}
     '';
diff --git a/home/lf/pv.nix b/home/lf/pv.nix
index e521272..fd49f87 100644
--- a/home/lf/pv.nix
+++ b/home/lf/pv.nix
@@ -52,7 +52,7 @@ in pkgs.writeShellScript "pv.sh" ''
       */pdf) pdf "$1" "$2" "$3" "$4" "$5" ;;
       text/html) ${lynx} -width="$4" -display_charset=utf-8 -dump "$1"  ;;
       text/troff) ${man} ./ "$1" | ${col} -b ;;
-      text/* | */xml) ${bat} --terminal-width "$4" -f "$1" ;;
+      text/* | */xml | application/json) ${bat} --terminal-width "$4" -f "$1" ;;
       application/zip) ${atool} --list -- "$1" ;;
       *opendocument*) ${odt2txt} "$1" ;;
       audio/* | application/octet-stream) ${mediainfo} "$1" || exit 1 ;;
diff --git a/home/zsh/common.nix b/home/zsh/common.nix
index 368ecc4..e079d15 100644
--- a/home/zsh/common.nix
+++ b/home/zsh/common.nix
@@ -94,6 +94,16 @@
               source "''${VENV_DIR}/''${selected_env}/bin/activate"
       }
 
+      lf () {
+          tmp=$(mktemp)
+          lf-wrapper -last-dir-path="$tmp" "$@"
+          if [ -f "$tmp" ]; then
+              dir=$(cat "$tmp")
+              rm -f "$tmp"
+              [ -d "$dir" ] && [ "$dir" != "$(pwd)" ] && cd "$dir"
+          fi
+      }
+
       export LANG=en_US.utf8
       export LC_ALL=en_US.UTF-8
     '';