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bug#7512: 24.0.50; emacs -Q -nw -eval '(view-lossage)' shows phantom cha


From: Eli Zaretskii
Subject: bug#7512: 24.0.50; emacs -Q -nw -eval '(view-lossage)' shows phantom chars under xterm
Date: Sun, 03 Jul 2011 02:22:25 -0400

> From: Lars Magne Ingebrigtsen <address@hidden>
> Date: Sat, 02 Jul 2011 23:28:33 +0200
> Cc: address@hidden, address@hidden
> 
> address@hidden writes:
> 
> > No big deal, but
> > $ emacs -Q -nw -eval '(view-lossage)'
> > shows
> > ESC [ > 0 ; 2 6 6 ; 0 c ESC ] 1 1 ; r g b : 0 0 0 0
> > / 0 0 0 0 / 0 0 0 0 ESC \
> > when run in xterm. I did not type that.
> 
> I can confirm this in a "C" locale, too:
> 
> ESC [ > 0 ; 2 6 1 ; 0 c ESC ] 1 1 ; r g b : 0 0 0 0
> / 0 0 0 0 / 0 0 0 0 ESC \ d s d s RET ESC x ESC p ESC
> x v i e w - l o s TAB RET
> 
> Are those escape codes registered as typed keystrokes?

See xterm.el:terminal-init-xterm, search for send-string-to-terminal.
In a nutshell, we send special commands to the terminal to find out
about its capabilities.





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