Making iTerm to translate 'meta-key' in the same way as in other OSes

Question

Cmd+., Profiles, Keys and choose Left option Key acts as: +Esc.

Works for me in emacs, though I'm not sure if it will have any other undesirable effects.

Go to Bookmarks > Manage Profiles. Then select Keyboard Profiles > Global and choose Option Key as Meta. This works for me in version 0.9.6.1201.

In Menu bar Iterm2 => Preferences => Profiles choose the keys tab and select

left Option key act as +Esc

worked for me as well in irssi.

For iTerm2 users this answer just partially solves the problem.

Cmd+., Profiles, Keys and choose Left option Key acts as: +Esc.

In addition to that, you have to go to Preferences (Cmd+,) ➔ Profiles ➔ Keys and in the Key Mappings find these Key Combination's: and . Double click on each mapping and change their Action and Esc+ to the following:

Go to your iTerm preferences select "profiles" then "key" and change your presets in "Natural Text Editing"

It should work immediately after.

It works with iTerm version 3.3.12