chore: handle current window for buffer in env.buf.win helper method

Author: MeanderingProgrammer

CHANGELOG.md

@@ -8,6 +8,8 @@
 - configurable scope priority [#534](https://github.com/MeanderingProgrammer/render-markdown.nvim/discussions/534)
   [e174f52](https://github.com/MeanderingProgrammer/render-markdown.nvim/commit/e174f524cd4f07789ef8083fa0e1c3573e7fe328)
 - left padding for checkboxes [da260dd](https://github.com/MeanderingProgrammer/render-markdown.nvim/commit/da260dd4979d130f0dfc63e824c9cb2433cfded2)
+- dash width function [#537](https://github.com/MeanderingProgrammer/render-markdown.nvim/issues/537)
+  [691651d](https://github.com/MeanderingProgrammer/render-markdown.nvim/commit/691651de4e02cbea9ff50c62d7d3a679abc95564)
 
 ### Bug Fixes
 

doc/render-markdown.txt

@@ -1,4 +1,4 @@
-*render-markdown.txt*       For NVIM v0.11.4      Last change: 2025 October 13
+*render-markdown.txt*       For NVIM v0.11.4      Last change: 2025 October 16
 
 ==============================================================================
 Table of Contents                          *render-markdown-table-of-contents*

lua/render-markdown/core/manager.lua

@@ -127,11 +127,7 @@ function M.attach(buf)
             if not state.get(buf).enabled then
                 return
             end
-            local win, wins = env.win.current(), env.buf.windows(buf)
-            win = vim.tbl_contains(wins, win) and win or wins[1]
-            if not win then
-                return
-            end
+            local win = env.buf.win(buf)
             local event = args.event
             ui.update(buf, win, event, vim.tbl_contains(force, event))
         end,

lua/render-markdown/core/ui.lua

@@ -105,7 +105,7 @@ function Updater:run()
         and env.win.view(self.win).leftcol == 0
     log.buf('info', 'Render', self.buf, render)
     local next_state = render and 'rendered' or 'default'
-    for _, win in ipairs(env.buf.windows(self.buf)) do
+    for _, win in ipairs(env.buf.wins(self.buf)) do
         for name, value in pairs(self.config.win_options) do
             env.win.set(win, name, value[next_state])
         end

lua/render-markdown/health.lua

@@ -6,7 +6,7 @@ local state = require('render-markdown.state')
 local M = {}
 
 ---@private
-M.version = '8.9.6'
+M.version = '8.9.7'
 
 function M.check()
     M.start('versions')

lua/render-markdown/lib/env.lua

@@ -194,12 +194,17 @@ end
 ---@param buf integer
 ---@return integer
 function M.buf.win(buf)
-    return vim.fn.bufwinid(buf)
+    local wins = M.buf.wins(buf)
+    if #wins == 0 then
+        return -1
+    end
+    local win = M.win.current()
+    return vim.tbl_contains(wins, win) and win or wins[1]
 end
 
 ---@param buf integer
 ---@return integer[]
-function M.buf.windows(buf)
+function M.buf.wins(buf)
     return vim.fn.win_findbuf(buf)
 end
 

lua/render-markdown/request/view.lua

@@ -15,7 +15,7 @@ function View.new(buf)
     local self = setmetatable({}, View)
     self.buf = buf
     local ranges = {} ---@type render.md.Range[]
-    for _, win in ipairs(env.buf.windows(buf)) do
+    for _, win in ipairs(env.buf.wins(buf)) do
         ranges[#ranges + 1] = env.range(buf, win, 10)
     end
     self.ranges = interval.coalesce(ranges)

tests/unit/view_spec.lua

@@ -6,7 +6,7 @@ local mock = require('luassert.mock')
 ---@param win_ranges table<integer, render.md.Range>
 local function env_mock(win_ranges)
     local env = mock(require('render-markdown.lib.env'), true)
-    env.buf.windows.on_call_with(0).returns(vim.tbl_keys(win_ranges))
+    env.buf.wins.on_call_with(0).returns(vim.tbl_keys(win_ranges))
     for win, range in pairs(win_ranges) do
         env.range.on_call_with(0, win, 10).returns(range)
     end