fix: adapt enhancd behaviour

.zshrc

@@ -45,8 +45,12 @@ source "${XDG_CONFIG_HOME:-$HOME/.config}/asdf-direnv/zshrc"
 #
 # See https://github.com/b4b4r07/enhancd
 #
+# Changes from default behaviour:
+# - Use single-dot to show upper tree (default is sub-dir);
+#   (use Alt-C (provided by fzf) to go into sub-dir).
 ENHANCD_DIR=$HOME/.zim
-ENHANCD_DOT_ARG='.'
+ENHANCD_ARG_DOUBLE_DOT='.'
+ENHANCD_ENABLE_SINGLE_DOT=false
 
 ### fzf
 #
@@ -273,7 +277,7 @@ fi
 ###
 
 export BROWSER=firefox
-export EDITOR=nvim
+export EDITOR=vi
 
 # -i Searches ignore case
 # -F Automatically exit if the entire file can be displayed