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Mouse wheel for scroll only - disable middle button paste

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created 2003 · complexity basic · author Girish Gajwani · version 6.0

I have had a problem when using the mousewheel for scrolling. I occasionally press the wheel and it pastes text in the clipboard's "*" register at the place where the scroll wheel was pressed accidentally. This has been a constant irritation.

The workaround is documented at :help <MiddleMouse>, which includes the following information.

If you have a scrollwheel and often accidentally paste text, you can use these mappings to disable the pasting with the middle mouse button:

:map <MiddleMouse> <Nop>
:imap <MiddleMouse> <Nop>

To revert to the original setting for middle button click:

:unmap <MiddleMouse>
:iunmap <MiddleMouse>


While at it, take care also of 2-MiddleMouse, 3-MiddleMouse and (oh, humanity!) 4-MiddleMouse (that's for middle double clicks and triple and ...).

Alternatively, instead of simply ignoring it, make it the same as a left click with:

noremap <MiddleMouse> <LeftMouse>

Also with noremap!, and the whole 2-,3-,etc. list above.

These tips are helpful in stopping an accidental *single* click, but two or more clicks in same location (such as the button being pressed on by a book) will still cause a paste to occur. Anyone know why?

The solution is to add the following as well, to handle double-click, triple-click, and quadruple-click:

:map <2-MiddleMouse> <Nop>
:imap <2-MiddleMouse> <Nop>
:map <3-MiddleMouse> <Nop>
:imap <3-MiddleMouse> <Nop>
:map <4-MiddleMouse> <Nop>
:imap <4-MiddleMouse> <Nop>

I find it easier to hold down the Ctrl key since I have nothing mapped to Ctrl-Middle. And then the middle mouse button still works according to my creaky old X-windows-originated intuitions.

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