On 29/03/14 11:40, Bruno Sutic wrote:
Hi,
I'm posting this to vim_dev because it is related to plugin development
(apologies if it should go to vim_use).
Recently, I discovered Tim Pope's vim-rsi plugin
(https://github.com/tpope/vim-rsi).
I was mind-blown to discover you can actually use Meta (alt key) mappings in
terminal vim. I tried to set this up before myself, but google searches weren't
returning anything useful.
Now I'm trying to hack/tweak vim-rsi, but I'm utterly puzzled by the following
snippet:
https://github.com/tpope/vim-rsi/blob/master/plugin/rsi.vim#L49-55
:helpgrep does not return anything on F31
Does anyone know how that works? What are those <Fxx>?
Thanks
Normally, <F1> to <F12> are the function keys on top of your keyboard.
The Vim help mentions even <F13> to <F19>, see ":help <F13>" etc., but I
haven't seen a keyboard which had them. I suppose that the author of the
snippet had a very special keyboard.
You can always use a different {lhs} in a mapping seen in an example
snippet; just use something which doesn't conflict which what you
already use. For instance, instead of <F31> to <F35> you can use <S-F8>
to <S-F12> (i.e. Shift-F8 to Shift-F12) provided that (a) they aren't
already used by something else, and (b) your terminal sends recognisable
byte sequences for them (see the last paragraph below).
You can even use multikey mappings, but, especially in that case, see
:help 'timeout'
:help 'ttimeout'
:help 'timeoutlen'
:help 'ttimeoutlen'
And, you can use Alt-key mappings in a terminal if the terminal sends a
different byte (or byte sequence) for that key than, for instance, the
same key without the Alt. To know what the keyboard (or the terminal)
sends for a given key, set Vim in Insert mode, then hit Ctrl-V followed
by that key. The result will often be gibberish, but (in Normal mode) g8
or ga over that gibberish will tell you which byte(s) it represents.
Best regards,
Tony.
--
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