Bram Moolenaar <[email protected]> wrote:

> Philip Pemberton wrote:
>
> > I've just solved a packaging issue on the machine, and Apt has pulled down
> > Vim 8.2.1897, with the same issue. Console output below:
> >
> [...]
>
> > philpem@cheetah:~$ gvim
> >  [>4;m [>4;2mphilpem@cheetah:~$ gvim
> >  [>4;m [>4;2mphilpem@cheetah:~$
>
> You probably have a shell command in your startup files.
> Combined with a terminal that doesn't ignore this escape sequence
> (iterm?).

The escape codes in the shell prompt has nothing to do
with Vim, unless it's a shell started in vim with :terminal ?

I recall that for recent vim, terminals such as xfce4-terminal
and gnome-terminal (maybe others) in Ubuntu-18.04 are too
old and Vim can output spurious codes on the terminal,
It hapens for example when doing  :!date
Ubuntu-20.04 does not have this issue (newer terminals).
There is a workaround: for old terminals: add the following
lines at the beginning of your ~/.vimrc:

  " Work around spurious characters in old terminals when doing :!date
  set t_TE= t_TI=

Regards
Dominique

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