How can I put DISPLAY name in frame-title of GNU EMACS -


i use gnu emacs on multiple monitors windoze pc via vnc.

(currently 5 - 4 big, 1 small monitor on tablet pc. 2 vertical 1200x1920, 2 horizontal 1920x1200, plus small.)

the way doing run separate vnc on each monitor. open single emacs, , use make-frame-other-display open emacs' frames in other vnc window.

to make things more complicated - run vncs on up-to-date ubuntu system, run emacs on quite out of date machine rest of build tools live. i.e. vnc displays not local same machine emacs.

rather xhost+, open xterm in each of vncs, , ssh machine running emacs. creates displays of form localhost:16.0. use make-frame-on-display using these localhost displays.

this gets confusing.

it helps if leave "echo $display" in xterm windows. or chamnge xterm's title.

i'd change emacs' frames' titles, reflect each frame things current display. doing

(defvar frame-title-specific-ag "emacs"  "title element frame-title-format specific particular emacs instance; andy glew") (setq frame-title-format   (list     "frame=%f "     (format "%s" frame-title-specific-ag)     " " 'system-name     " display="     (getenv "display")     " %b"     " " (format "pid:%d" (emacs-pid))     " user:"(user-login-name))   ) 

only gets display variable entire emacs.

q: there way find out display associated particular frame?

to display name current frame, use

(frame-parameter nil 'display) 

or replace nil specific frame name of display instead of current one. example, use show display in title:

(setq frame-title-format       '("display=" (:eval (frame-parameter nil 'display)))) 

note important form quoted, list used has :eval tells emacs run code whenever renders frame title. without that, might tempted write like:

(setq frame-title-format       (list "display=" (frame-parameter nil 'display))) 

but doesn't work. problem function call happens when form evaluated, , result list holding particular string, name of whatever frame in effect evaluation happened, , string not change magically.


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