yank_notification: show line numbers. Clipboard copy notification to have line counts. Fix: Paste clipboard over selection

lua/copy_to_clipboard_fix.lua

@@ -1,10 +1,17 @@
 local M = {}
 function M.trim_clipboard()
+	-- Get the content of the '+' register
 	local content = vim.fn.getreg '+'
 	-- Remove single trailing newline if present
 	content = content:gsub('\n$', '')
+	-- Update '+' and '*' registers
 	vim.fn.setreg('+', content)
 	vim.fn.setreg('*', content)
-	vim.notify('Copied selection to clipboard', vim.log.levels.INFO)
+	-- Count the number of lines copied
+	local line_count = select(2, content:gsub('\n', '')) + 1 -- Number of newlines + 1
+	-- Notification with line count
+	local plural = line_count == 1 and '' or 's'
+	vim.notify(string.format('Copied %d line%s to clipboard', line_count, plural), vim.log.levels.INFO)
 end
+
 return M