fix(diagnostic): check window validity. Fixes #55

Author: rachartier

lua/tiny-inline-diagnostic/diagnostic.lua

@@ -105,6 +105,11 @@ end
 ---@param opts DiagnosticConfig
 ---@param event table
 local function apply_virtual_texts(opts, event)
+	local current_win = vim.api.nvim_get_current_win()
+	if not vim.api.nvim_win_is_valid(current_win) then
+		return
+	end
+
 	if not (M.enabled and vim.diagnostic.is_enabled() and vim.api.nvim_buf_is_valid(event.buf)) then
 		extmarks.clear(event.buf)
 		return
@@ -238,9 +243,6 @@ local function setup_buffer_autocmds(autocmd_ns, opts, event, throttled_apply)
 		group = autocmd_ns,
 		buffer = event.buf,
 		callback = function()
-			if not vim.api.nvim_buf_is_valid(event.buf) then
-				detach_buffer(event.buf)
-			end
 			detach_buffer(event.buf)
 		end,
 	})

lua/tiny-inline-diagnostic/extmarks.lua

@@ -28,9 +28,17 @@ end
 
 ---@return {row: number, col: number}
 local function get_window_position()
+	local ok_winline, result_winline = pcall(vim.fn.winline)
+	local ok_virtcol, result_virtcol = pcall(vim.fn.virtcol, "$")
+	local ok_winsaveview, result_winsaveview = pcall(vim.fn.winsaveview)
+
+	if not ok_winline or not ok_virtcol or not ok_winsaveview then
+		return { row = 0, col = 0 }
+	end
+
 	return {
-		row = vim.fn.winline() - 1,
-		col = vim.fn.virtcol("$") - vim.fn.winsaveview().leftcol,
+		row = result_winline - 1,
+		col = result_virtcol - result_winsaveview.leftcol,
 	}
 end