BIG CHANGES:

* Command no longer need to be run from the base directory of the repo.
  * blackbox_edit now asks "are you sure?" and is greatly simplified.

_blackbox_common.sh:
  * add_filename_to_cryptlist now accepts paths relative to cwd.
  * fail_if_not_on_cryptlist now accepts paths relative to cwd.
  * new function: vcs_relative_path reports a path to the file relative to the REPOBASE.
  * new function: is_on_cryptlist

plus...
  * Some minor performance enhancesments and cleanups.
  * confidence_test.sh now tests some commands while not in REPOBASE.

bin/blackbox_edit

@@ -3,33 +3,24 @@
 #
 # blackbox_edit.sh -- Decrypt a file temporarily for edition, then re-encrypts it again
 #
-
 set -e
 . _blackbox_common.sh
+set -x
 
 for param in """$@""" ; do
-  unencrypted_file=$(mktemp)
-  encrypted_file=$(get_encrypted_filename "$param")
-  echo ========== PLAINFILE "$unencrypted_file"
-
-  fail_if_not_on_cryptlist "$unencrypted_file"
-  fail_if_not_exists "$encrypted_file" "This should not happen."
-  if [[ ! -s "$unencrypted_file" ]]; then
-    rm -f "$unencrypted_file"
+  if ! is_on_cryptlist "$param" ; then
+    read -p "Encrypt file $param? (y/n) " ans
+    case "$ans" in
+      y* | Y*)
+        blackbox_register_new_file "$param"
+        ;;
+      *)
+        echo 'Skipping...'
+        continue
+        ;;
+    esac
   fi
-  if [[ -f "$unencrypted_file" ]]; then
-    echo SKIPPING: "$1" "Will not overwrite non-empty files."
-    continue
-  fi
-
-  prepare_keychain
-  decrypt_file "$encrypted_file" "$unencrypted_file"
+  blackbox_edit_start "$param"
   $EDITOR $unencrypted_file
-
-  encrypt_file "$unencrypted_file" "$encrypted_file"
-  shred_file "$unencrypted_file"
-  
-  echo "========== UPDATED ${encrypted_file}"
-  echo "Likely next step:"
-  echo "    git commit -m\"${encrypted_file} updated\" $encrypted_file"
+  blackbox_edit_end "$param"
 done