toggle netrw previews with p

LOG.md

@@ -221,6 +221,7 @@ Record every decision here with a short rationale. Append new entries; do not re
 - 2026-10-28: Added buffer-local netrw `<M-j>` / `<M-k>` mappings to scroll the current preview with native `<C-e>` / `<C-y>` behavior while focus remains in the tree. The mappings accept Vim counts and quietly do nothing when no preview exists.
 - 2026-10-28: Hardened preview scrolling after an interactive over-scroll surfaced a window-local error that did not reproduce headlessly. The temporary preview-window call is now protected, so stale-window and boundary failures are treated like native top/bottom clamping instead of reaching the command line.
 - 2026-10-28: Excluded netrw from automatic session persistence after `:mksession` serialized its generated `NetrwTreeListing` name and restored an empty explorer buffer. Before the existing exit-time save, preview windows and netrw windows are removed; a netrw-only tab is dropped, while the sole remaining netrw window is replaced with an ordinary file buffer or a blank fallback. Netrw is intentionally not rebuilt on load.
+- 2026-10-28: Changed the enhanced netrw `p` mapping into a true toggle. With no preview it opens the selected file or directory and begins live cursor updates; with an existing preview it closes that window and stops updates, matching manual `:pclose` behavior.
 
 ## Project-Local Configuration
 

MIGRATION_PLAN.md

@@ -610,7 +610,7 @@ Installed layout:
 Target workflow:
 
 ```text
-p on file/directory  open preview and begin live updates
+p on file/directory  toggle preview and live updates
 j / k                replace preview with the selected entry
 <CR>, o, v, t        open the file and close the preview
 :pclose / <C-w>z     close the preview and stop live updates
@@ -672,6 +672,7 @@ file  3.2K     2026-10-27 12:55  telescope.lua
 - [x] Suppress remaining Vim syntax and indent-guide decoration in file previews, restoring prior state on edit
 - [x] Add count-aware `<M-j>` / `<M-k>` preview scrolling without moving focus from netrw
 - [x] Make preview scrolling silently clamp at file/window boundaries
+- [x] Make `p` toggle an existing preview closed as well as opening it
 - [ ] Test the workflow in an actual SSH session
 - [ ] Confirm stock netrw remains understandable when this configuration is unavailable
 

README.md

@@ -99,7 +99,7 @@ Core keymaps available globally (not plugin-specific). These provide fallbacks f
 
 | Key | Description |
 | --- | --- |
-| `p` | Preview the selected file or directory below and enable live cursor updates |
+| `p` | Toggle the selected file/directory preview and live cursor updates |
 | `j` / `k` | Update an existing preview to the newly selected entry |
 | `<M-j>` / `<M-k>` | Scroll the preview down/up without leaving netrw; accepts a count |
 | `:pclose` / `<C-w>z` | Close the preview and stop live updates |
@@ -120,10 +120,10 @@ Preview-only file buffers remain loaded but unlisted until Neovim exits, avoidin
 the parser detachment that triggers this Neovim 0.12 race.
 
 Opening a file with `<CR>`, `o`, `v`, or `t`, or otherwise leaving netrw, closes
-the preview. Closing it manually also disables live updates until `p` is pressed
+the preview. Closing it manually or pressing `p` again disables live updates
-again. Enhanced directory summaries apply to local paths (including local paths
+until `p` is pressed again. Enhanced directory summaries apply to local paths
-when Neovim runs over SSH); netrw URI browsing retains its native preview
+(including local paths when Neovim runs over SSH); netrw URI browsing retains
-behavior.
+its native preview behavior.
 
 ##### File Operations
 

lua/netrw-preview.lua

@@ -657,10 +657,17 @@ function M.setup(buf)
   vim.keymap.set('n', 'p', function()
     state.win = vim.api.nvim_get_current_win()
     state.tab = vim.api.nvim_get_current_tabpage()
+
+    if find_preview_window(state.tab) then
+      close_timer(state)
+      close_preview(state)
+      return
+    end
+
     preview_selected(state, true)
   end, {
     buffer = buf,
-    desc = 'Netrw: Preview selection and enable live updates',
+    desc = 'Netrw: Toggle preview and live updates',
     nowait = true,
     silent = true,
   })