Unsuccessful key binding (F3 and F4 keys)

Question

I am very impressed with vifm capabilities, however I have found some strange behavior when pressing F3 and F4 in normal mode. Pressing F3 does nothing, and pressing F4 brings up the sort option dropdown menu, although vifmrc specifies nnoremap <f3> :!less %c<cr> and nnoremap <f4> :edit %c<cr>. However, the :edit %c command works correctly: it opens the file in vim. The terminal is xterm-color, the $TERM variable is set via .Xresources and has the correct value (xterm-color). I would be glad if someone could explain what is wrong.

Answer 1

I'm not sure what xterm-color terminfo entry is for and why it's defined this way, but it uses definitions of functional keys that don't match what XTerm is actually sending:

[~]$ infocmp xterm-color xterm-256color | grep 'kf[34]:'
        kf3: '\E[13~', '\EOR'.
        kf4: '\E[14~', '\EOS'.
[~]$ Ctrl+V F3: ^[OR
[~]$ Ctrl+V F4: ^[OS

Using xterm or xterm-256color should work fine. There may be a configuration option for XTerm which makes it compatible with xterm-color.

Comments

Thank you very much for your prompt reply. That's all I needed.

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Switched to xterm-256color. Everything works.