Two modifiers with one key #277
Description
I'm trying to set up a key to hold two modifiers at once.
More specifically: on layer 1, I sometimes want to modify keys with Shift. Currently, this requires holding both my MO(1) and Shift keys.
Instead, I would like to move to layer 1 with a simple MO(1) key, then slide over (with a tiny overlap period) to another key that holds Shift and MO(1) at the same time.
Can this be achieved?
On that second key, I've tried using a macro [["down", "MO(0)", "KC_LSHIFT"]] (also tried swapped order), but it doesn't work.
I've further tried assigning LCTL(LSFT(KC)) as per https://www.reddit.com/r/qmk/comments/1aie4pu/hold_two_mods_with_one_key/, but the GUI won't accept that.