How to globally disable and re-enable Echo?

Question

I have Echo's buried in code all over my notebook, I'd like a flag to turn them all on or off globally.

Sure Unprotect[Echo];Echo=Identity would disable them, but then you can't re-enable them
A solution that works for all the various types of Echos (EchoName, EchoEvaluation, ...) would be nice
QuietEcho doesn't work because I'd have to write it add it around every blob of code

Carl Woll · Accepted Answer

Echo has an autoload, so you need to make sure the symbol is autoloaded before you modify its values:
DisableEcho[] := (Unprotect[Echo]; Echo; Echo = #&; Protect[Echo];)

EnableEcho[] := (Unprotect[Echo]; Echo=.; Protect[Echo];)

Test:
DisableEcho[]

Echo[3]

EnableEcho[]

Echo[3, "EchoLabel"]

3

EchoLabel 3

3

How to globally disable and re-enable Echo?

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