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After a near-crash, the assistence has installed LINUX 20.4 instead of 16.04. When in vi I try to insert a ^C using ^V^C I insert [27;5;99~ Is someone able to tell me which initialization file controls this behavior and what I must insert in it? Long time ago, ^C could be inserted by ALT 003 or something like. Is this procedure (or a similar one) lost forever?

First of all, thanks to both.

xterm -v says

"Xterm(353)"

vi --version says

"VIM - Vi IMproved 8.1 (2018 May 18, compiled Apr 15 2020 06:40:31)"

plus two pages of info that I will report below

$TERM is xterm

The two pages of extra info from vi --version are

Included patches: 1-2269 Modified by team+vim@tracker.debian.org Compiled by team+vim@tracker.debian.org Huge version without GUI. Features included (+) or not (-): +acl -farsi -mouse_sysmouse -tag_any_white +arabic +file_in_path +mouse_urxvt -tcl +autocmd +find_in_path +mouse_xterm +termguicolors +autochdir +float +multi_byte +terminal -autoservername +folding +multi_lang +terminfo -balloon_eval -footer -mzscheme +termresponse +balloon_eval_term +fork() +netbeans_intg +textobjects -browse +gettext +num64 +textprop ++builtin_terms -hangul_input +packages +timers +byte_offset +iconv +path_extra +title +channel +insert_expand -perl -toolbar +cindent +job +persistent_undo +user_commands -clientserver +jumplist +postscript +vartabs -clipboard +keymap +printer +vertsplit +cmdline_compl +lambda +profile +virtualedit +cmdline_hist +langmap -python +visual +cmdline_info +libcall +python3 +visualextra +comments +linebreak +quickfix +viminfo +conceal +lispindent +reltime +vreplace +cryptv +listcmds +rightleft +wildignore +cscope +localmap -ruby +wildmenu +cursorbind -lua +scrollbind +windows +cursorshape +menu +signs +writebackup +dialog_con +mksession +smartindent -X11 +diff +modify_fname +sound -xfontset +digraphs +mouse +spell -xim -dnd -mouseshape +startuptime -xpm -ebcdic +mouse_dec +statusline -xsmp +emacs_tags +mouse_gpm -sun_workshop -xterm_clipboard +eval -mouse_jsbterm +syntax -xterm_save +ex_extra +mouse_netterm +tag_binary
+extra_search +mouse_sgr -tag_old_static
system vimrc file: "$VIM/vimrc" user vimrc file: "$HOME/.vimrc" 2nd user vimrc file: "~/.vim/vimrc" user exrc file: "$HOME/.exrc" defaults file: "$VIMRUNTIME/defaults.vim" fall-back for $VIM: "/usr/share/vim" Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -Wdate-time -g -O2 -fdebug-prefix-map=/build/vim-iU6mZD/vim-8.1.2269=. -fstack-protector-strong -Wformat -Werror=format-security -D_REENTRANT -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: gcc -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -o vim -lm -ltinfo -lnsl -lselinux -lcanberra -lacl -lattr -lgpm -ldl -L/usr/lib/python3.8/config-3.8-x86_64-linux-gnu -lpython3.8 -lcrypt -lpthread -ldl -lutil -lm -lm

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    This is modifyOtherKeys feature, from xterm. There was a bug in Vim which was fixed regarding this function, so what version is that? Also see :h modifyOtherKeys on how to disable this. Sep 8 at 11:41
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    Welcome to Vi and Vim! Can you share some more details about your terminal, TERM environment variable, and what version of vi you are using? You can include them in your post via an edit.
    – D. Ben Knoble
    Sep 8 at 14:59
  • Thanks Christian, your fix works. The problem was a destructive interaction of configuration files and env variables. For what regards :compatible, this brings the vim too back in time, with the loss of the multi-level undo, that is a necessary tool. thanks to all. Sep 14 at 23:57
  • @pietrospizzo if you want to add an answer, please add exact details about how to solve the problem. Referring to comments and help is of course acceptable, but your fix works. The problem was a destructive interaction of configuration files and env variables. is a bit too vague
    – D. Ben Knoble
    Sep 15 at 19:16
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The simplest fix to bring the vi back in time to what I was used to is to give the flags -i NONE -u NONE. You should also know about :set compatible.

For myself, this is preferable; for someone newer to vi/vim, I would recommend learning the new features.

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  • What's wrong with :h modifyOtherKeys and disabling it if you do not like that? Sep 14 at 7:16

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