"Use Option as Meta key" with ability to type the # symbol I am using Terminal version 2.5, where I have two requirements:

I need to be able to type the Meta key.
I need to be able to type the # character, too (Option+3 for the UK keyboard layout)

How can I satisfy both of these? By default, (2) is satisfied, but (1) is not. I can then turn on &quot;Use Option as Meta key&quot;, which satisfies (1), but breaks requirement (2).
How can I have both? (It shouldn't be so hard for me to just be able to type.)
Edit: what I'm looking for, for example, might be a way to just &quot;Use Option as Meta key&quot; for the left/right Option key, or a way to override the &quot;Use Option as Meta key&quot; for the sole exception of the # character.
iTerm 2 can be configured to only use one option key as meta: