disabling mouse support in `vim` in a `gnome-terminal` environment

Question

Edit: The problem of an enabled mouse in vim appears to be specific to gnome-terminal (version 3.4.1.1-1; I am using gnome 3 fallback mode). If I run xterm, mouse support in vim is disabled by default, and I have the option to enable it (:set mouse=a, which I never do) and disable it (:set mouse=). In contrast, when I run vim in gnome-terminal, mouse support is enabled by default and it is not possible to disable it (:set mouse= has no effect). Is there a solution short of changing terminal emulator?

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I want to completely disable mouse support in vim. I am running vim version 2:7.3.547-3 through gnome-terminal version 3.4.1.1-1. The following commands, whether executed directly in vim or added to my .vimrc file, fail to disable mouse support:

set mouse =
set mouse =""

Based on reading the vim manual and posts online, one or both of these commands should work. In particular, the vim manual states the following

'mouse'                 string  (default "", "a" for GUI, MS-DOS and Win32)
    The mouse can be enabled for different modes:
            n       Normal mode
            v       Visual mode
            i       Insert mode
            c       Command-line mode
            h       all previous modes when editing a help file
            a       all previous modes
            r       for |hit-enter| and |more-prompt| prompt 
    Normally you would enable the mouse in all four modes with: >
            :set mouse=a
    When the mouse is not enabled, the GUI will still use the mouse for
    modeless selection.  This doesn't move the text cursor.

I am using a laptop and each time my hand brushes the trackpad, my cursor position in vim moves abruptly.

Answer 1

I've found what cause this bad behavior with many linux flavors :

/usr/share/vim/vim80/defaults.vim # may be "vim81" depending on your vim version

it's 'sourced' if there's no ~/.vimrc but even if you have a /etc/vimrc or such /etc file, so if you don't have one just create a blank one as suggested by @lgpasquale:

mkdir ~/.vim/; [[ -s ~/.vim/vimrc ]] && echo "aborted, file exists" || :> ~/.vim/vimrc

If you liked the other features (like syntax highlighting) that you got from defaults.vim, you can use this command rather the the previous one:

mkdir ~/.vim/; [[ -s ~/.vim/vimrc ]] && echo "aborted, file exists" || echo -e "source /usr/share/vim/vim80/defaults.vim\nset mouse=" > ~/.vim/vimrc

Answer 2

mouse support is disabled by default, so something is turning it on. Likely the reason your set mouse= is failing is because it's running before whatever is turning it on. I'd look through the rest of your vimrc, and possibly the system wide vimrc (/etc/vim/vimrc is a standard location).

As a last resort, you can do this really ugly hack which will cause the command to run as one of the last things done before giving you control of the editor.

autocmd BufEnter * set mouse=

Answer 3

I ran into this on my OS X "Terminal" app on a Fedora Server 25 host. I've permanently solved it with this in my .vimrc with:

set mouse=
set ttymouse=

Now I can scroll up to my previous bash history in my terminal's scrollback with my mouse.

Answer 4

On debian stretch some central settings are loaded after loading /etc/vim/vimrc and /etc/vim/vimrc.local. See /etc/vim/vimrc:

...
" Vim will load $VIMRUNTIME/defaults.vim if the user does not have a vimrc.
" This happens after /etc/vim/vimrc(.local) are loaded, so it will override
" any settings in these files.
" If you don't want that to happen, uncomment the below line to prevent
" defaults.vim from being loaded.
"let g:skip_defaults_vim = 1
...

This file defaults to /usr/share/vim/vim80/defaults.vim. Now changing a central file under /usr/share/... is

• evil
• non-permanent, it gets reverted after an update

Setting skip_defaults_vim by uncommentig the above line removes all other options set by that file. To just remove the unwanted options put the following into /etc/vimrc.local:

" /etc/vim/vimrc.local
" honor skip_defaults_vim from the master /etc/vim/vimrc file
if ! exists('skip_defaults_vim')
  " Source the defaults file manually from here
  source $VIMRUNTIME/defaults.vim
endif

" avoid loading the defaults twice
let g:skip_defaults_vim = 1

" revert any unwanted changes the defaults file introduced
set mouse=

" set any other options you want centrally on your system
"set paste " uncomment if you want paste insert enabled
"...

This loads the defaults.vim manually and turns off the automatic loading, thus giving you a chance to revert any unwanted settings, without having to create a .vimrc for every user account.

Answer 5

I had pretty much the same complaints as you about the newer Vim's sensitivity to the mouse. Using set mouse="" did not do it for me, either.

I have set mouse=c (no quotes) close to the bottom of my .vimrc file. That seemed to keep Vim from using the mouse, except when using "PuTTY" to ssh in from my (ugh!) Windows machine at work. I have to use shift-middle-button to paste in PuTTY.

2018-03-30 Edit: I have now started using: :mouse= (no quotes or anything) on some remote (CentOS 6.7) instances of vim to get rid of undesired mouse effects.

Answer 6

Add this to your .vimrc:

if has("gui_running")
    "echo "yes, we have a GUI"
    set mouse=a
else
    "echo "Boring old console"
    set mouse=
endif

Answer 7

Somewhat related to the question, if you are using neovim(nvim) you should put set mouse= in your ~/.config/nvim/init.vim configuration file.

If the directory doesn't exist create it with mkdir -p ~/.config/nvim/

Answer 8

The best option so far that I've found is from another question that happens to address the same mouse option override.

Add to your local ~/.vimrc:

source $VIMRUNTIME/defaults.vim
set mouse-=a