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** [tickets:#77] Mapping C-Arrow in Vim**
**Status:** open
**Created:** Tue Nov 12, 2013 12:08 PM UTC by Paul Gideon Dann
**Last Updated:** Tue Nov 12, 2013 12:08 PM UTC
**Owner:** nobody
Not so much a bug as a comment regarding the FAQ, which mentioned that examples
of how to map special keys in Vim without requiring xterm-keys would be welcome.
>From the following:
https://github.com/godlygeek/vim-files/blob/master/plugin/terminalkeys.vim
I came to this "simplified" solution:
<pre>
set ttimeoutlen=100
if &term == 'screen'
set <F25>=^[[A
map <F25> <C-Up>
map! <F25> <C-Up>
set <F26>=^[[B
map <F26> <C-Down>
map! <F26> <C-Down>
set <F27>=^[[C
map <F27> <C-Right>
map! <F27> <C-Right>
set <F28>=^[[D
map <F28> <C-Left>
map! <F28> <C-Left>
endif
</pre>
For some reason, Vim receives `^[OA` for `<Up>` and `^[[A` for `<C-Up>`,
whereas `cat -v` receives them the other way around, in the same session. No
idea why, but this works. There are no terminfo keycode names we can set
directly for `<C-Up>` and friends, but it's important that we not simply map
the escape sequence to the final `<C-Up>` using `map`, because that would
result in an annoying delay when pressing <Esc> to leave insert mode.
Specifying `ttimeoutlen` allows us to greatly reduce the length of time Vim
waits after receiving an `<Esc>` code before deciding it wasn't one of these
combinations.
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