diff --git a/user/config/bash/custom b/user/config/bash/custom
index 9da3f0c..bb30329 100644
--- a/user/config/bash/custom
+++ b/user/config/bash/custom
@@ -24,7 +24,7 @@ _load history
 _load aliases
 # set xdg env vars to keep home directory clean
 _load xdg
-_load show
+_load func
 
 if _exists fzf; then
     export FZF_DEFAULT_OPTS="--bind=ctrl-u:page-up,ctrl-d:page-down"
diff --git a/user/config/bash/show b/user/config/bash/func
similarity index 71%
rename from user/config/bash/show
rename to user/config/bash/func
index c0f4f76..0deac83 100644
--- a/user/config/bash/show
+++ b/user/config/bash/func
@@ -40,3 +40,21 @@ function rl() {
   done
   [[ -e "$l" ]] && echo "$l" || echo "~nonexistent~"
 }
+function tmpedit() {
+  if [[ "$#" -ne 1 ]]; then
+    echo "usage: tmpedit <file>" >&2
+    return 1
+  fi
+  local real="$(realpath "$1")"
+  if [[ ! -f "$real" ]]; then
+    echo "not found"
+    return 2
+  fi
+  if [[ ! "$real" =~ /nix/store/* ]]; then
+    echo "not nix"
+    return 3
+  fi
+  cp --remove-destination "$real" "$1"
+  chmod +w "$1"
+  $EDITOR "$1"
+}