feat(n³): file selector

.zshrc

@@ -267,11 +267,43 @@ n()
 }
 
 nnn-file-widget() {
-  local item
-  nnn -p- <"$TTY" |
-  while read item; do
-    LBUFFER+="${(q-)item} "
-  done
+  # Extract "shell word" at cursor position (respecting quotes)
+  local _cursor=$CURSOR
+  zle .select-a-shell-word -N
+
+  # Helper
+  nnn-pick()
+  {
+    IFS=$'\n'
+    local items=( $(command nnn -p- $1 < "$TTY") )
+    if (( #items > 0 )); then
+      items=( ${(q-)items} )
+      print -n "${(j: :)items} "
+    fi
+  }
+
+  # Adapt behaviour to buffer content
+  if (($CURSOR < _cursor)); then
+    # Nothing at cursor, restore state before calling nnn
+    CURSOR=${_cursor}
+    REGION_ACTIVE=0
+    zle -U "$(nnn-pick)"
+  else
+    # Provide content under cursor to nnn
+    zle .kill-region
+    local result="$(nnn-pick ${CUTBUFFER## })"
+    if (( #result == 0 )); then
+      # Nothing selected, restore content
+      zle .yank
+    else
+      # Replace content with what nnn returned
+      zle -U " $result"
+    fi
+  fi
+
+  # TODO single-op undo
+  # TODO Handle vicmd properly
+  zle .redisplay
 }
 zle -N nnn-file-widget
 bindkey -M vicmd '\en' nnn-file-widget