Re: Alt key mapping: "set " works in Normal/Command mode, but not in Insert mode

>
> What does ":verbose set timeoutlen" answer?
>
> I recommend someting like the following settings:
>
> if exists('+timeout')
> " should a timeout be applied to keys and mappings?
> " 'timeout' true=yes false=no
> " 'ttimeout' (not used if 'timeout' is true) time out on key codes
> " 'timeoutlen' timeout duration on mappings
> " 'ttimeoutlen': timeout duration on keycodes
> " (use 'timeoutlen') if negative)
> " durations are in milliseconds
> set timeout timeoutlen=5000 ttimeoutlen=250
> " ttimeoutlen should be longer than the hardware cycle but shorter
> than your fastest typing speed
> " timeoutlen should be longer than your slowest typing speed
> endif
>
> Best regards,
> Tony.


Yes, the 'timeout' option is usable with my Vim, yet I'm afraid it doesn't help much here. For the Meta key mapping to work in Insert mode I have to do keymapping like this:

inoremap <expr> <Esc>j InsertModeKeymapping('M-j')

And this will introduce ambiguity to the <Esc> key, Vim get stuck for a while to resolve it whenever the key was pressed under Insert mode. Also, from my understanding, the default status with 'timeout' not set equals 'timeoutlen' being set to infinite time, which is indifferent with, say, a large number.


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