copy (to X clipboard) shortcut in .tmux.conf

Question

In order to copy text to X clipboard in tmux, what I currently do is:

• go selection mode with prefix[
• start selection with space (using mode-keys vi btw)
• select the text and press enter
• copy tmux buffer to X clipboard using prefixctrl+c

(I have a mapping as bind C-c run "tmux show-buffer | xclip -selection clipboard -i"

I'm trying to eliminate some of these steps by making a mapping for selection mode. I have tried:

bind-key -t vi-copy C-c run "tmux show-buffer | xclip -selection clipboard -i"

which gives me and error:

.. usage: bind-key [-cnr] [-t key-table] key command [arguments]

(I couldn't copy the error lol)

how can I fix this?

EDIT: I have realized I can select and copy to tmux buffer (first 3 steps) using mouse just like a regular selection (although highlighting doesn't last, it still selects the text) and then use the following bind to copy to x clipboard:

bind-key -n C-c run "tmux show-buffer | xclip -selection clipboard -i"

(I used this method to copy this text and it was easy ;)

note that -n denotes "no prefix" therefore no escaping is needed. if you don't get confused by the vanishing highlight this is analogous to regular (common user interface) copying.

this is the best I have come up with so far..

EDIT2: turned out ctrl+c overlaps with process interrupt thing so I changed to ctrl+alt+c for now. (didn't quite like it)