emacs deamon how to keep mode-line-frame-identification at 1

Question

Each time when I open a new file using emacsclient -t -q file.txt, mode-line-frame-identification number keep increases. What is the reason for it, and can I reaccess to previously numbered frames?

-UU-:---F1
-UU-:---F2
-UU-:---F3
...
-UU-:---F50

Is it possible to keep it at 1, or when emacsclient starts connect to F1 instead of incrementing its value?

Answer 1

Every time you connect to emacs with emacsclient -t, it creates a new frame, hence the number keeps increasing. Those frames are destroyed when you disconnect with C-x #, so there's no way to get back to them.

If you want to change what's displayed in the mode-line, you can change mode-line-format to remove or replace mode-line-frame-identification.