fix: better support for same buffer in multiple windows

# Details

Issue: #122

When using zen mode plugin 2 instances of the same buffer are open in
different windows. However this plugin only picks up the first window,
thus interactions with the second window did nothing.

To fix this rather than using the `bufwinid` method to go from buffer
to window we now instead get the current window and pass that as input
to the update method along with the buffer. That way the buffer can be
associated with any number of windows but events will still apply to
whatever the active window is.

Author: MeanderingProgrammer

lua/render-markdown/health.lua

@@ -5,7 +5,7 @@ local M = {}
 
 ---@private
 ---@type string
-M.version = '6.0.4'
+M.version = '6.0.5'
 
 function M.check()
     vim.health.start('render-markdown.nvim [version]')

lua/render-markdown/manager.lua

@@ -17,18 +17,18 @@ function M.setup()
     -- Attempt to attach to all buffers, cannot use pattern to support plugin directory
     vim.api.nvim_create_autocmd('FileType', {
         group = M.group,
-        callback = function(event)
-            M.attach(event.buf)
+        callback = function(args)
+            M.attach(args.buf)
         end,
     })
     -- Window resizing is not buffer specific so is managed more globablly
     vim.api.nvim_create_autocmd('WinResized', {
         group = M.group,
         callback = function()
             for _, win in ipairs(vim.v.event.windows) do
-                local buf = util.win_to_buf(win)
+                local buf = vim.fn.winbufnr(win)
                 if vim.tbl_contains(buffers, buf) then
-                    ui.debounce_update(buf, true)
+                    ui.debounce_update(buf, win, true)
                 end
             end
         end,
@@ -41,7 +41,7 @@ function M.set_all(enabled)
     M.attach(vim.api.nvim_get_current_buf())
     state.enabled = enabled
     for _, buf in ipairs(buffers) do
-        ui.debounce_update(buf, true)
+        ui.debounce_update(buf, vim.fn.bufwinid(buf), true)
     end
 end
 
@@ -73,7 +73,10 @@ function M.attach(buf)
         group = M.group,
         buffer = buf,
         callback = function(args)
-            ui.debounce_update(buf, vim.tbl_contains(change_events, args.event))
+            local win = vim.api.nvim_get_current_win()
+            if buf == vim.fn.winbufnr(win) then
+                ui.debounce_update(buf, win, vim.tbl_contains(change_events, args.event))
+            end
         end,
     })
 end

lua/render-markdown/ui.lua

@@ -37,9 +37,9 @@ function M.clear(buf, buf_state)
 end
 
 ---@param buf integer
+---@param win integer
 ---@param change boolean
-function M.debounce_update(buf, change)
-    local win = util.buf_to_win(buf)
+function M.debounce_update(buf, win, change)
     if not util.valid(buf, win) then
         return
     end

lua/render-markdown/util.lua

@@ -4,18 +4,6 @@ local M = {}
 ---@type boolean
 M.has_10 = vim.fn.has('nvim-0.10') == 1
 
----@param win integer
----@return integer
-function M.win_to_buf(win)
-    return vim.fn.winbufnr(win)
-end
-
----@param buf integer
----@return integer
-function M.buf_to_win(buf)
-    return vim.fn.bufwinid(buf)
-end
-
 ---@param buf integer
 ---@param win integer
 ---@return boolean