keyboardmacosmojave
I'd like to press a custom set of keys (i.e. CTRL+`) to instead act like I am pressing a different set of keys (i.e. CTRL+]).
How can I accomplish this? In the keyboard shortcuts menu I'm only seeing ways to set keyboard keys to launch applications or change how the modifier keys work.
The built in methods for changing shortcuts are less limited than you think.
Go to the Exposé & Spaces preference pane in System Preferences, and check out the bottom section of the preference pane. Note especially the text just above it:
Keyboard and Mouse Shortcuts (for additional choices press Shift, Control, Option, or Command)
Here's me pressing ⌃⇧⌘ (Control + Shift + Command) while the shortcut drop-down is active:
The shortcuts have the keys I'm pressing added to them (well, sort of, it avoids redundant combinations but its very easy to see how it works and choose exactly what you want).
So for ctrl+alt+arrow keys, open the drop-down, press ⌃⌥ (Control + Option) and you'll note the top item becomes the shortcut you're after.
You can also do the same for the shortcuts to switch directly to numbered spaces or for the Spaces activation shortcut.
This is not an exact answer to your question, but you can also use ⌘+1, ⌘+2 etc for visiting each tab, as well as ⇧+⌘+] or ⇧+⌘+[ to go to the previous/next tab.
Best Answer
This may be a viable solution, you'll have to give it a try and see:
For the Automator Service1:
Use the image below for the settings.
ApplesScript code:
For System Preferences > Keyboard > Shortcuts > Services:
Note: Sometimes with an Automator Service1 and assigning a keyboard shortcut, you may first have to trigger it from the target App's Services menu one time. From then on the keyboard shortcut should work normally.
1 In macOS Mojave an Automator Service is called a Quick Action.