GNU Emacs Manual - Tags Stepping

Stepping Through a Tags Table

If you wish to process all the files in the selected tags table, but not in the specific ways that M-x tags-search and M-x tags-query-replace do, you can use M-x next-file to visit the files one by one.

C-u M-x next-file

Visit the first file in the tags table, and prepare to advance sequentially by files.

M-x next-file

Visit the next file in the selected tags table.