How to determine function name from inside a function

Question

If I have a Bash script like:

#!/bin/bash

f() {
  # echo function name, \"f\" in this case
}

Is there any way to do this? This could be us

Answer 1

Another example:

# in a file "foobar"
foo() {
    echo "$FUNCNAME fuction begins"
}

foobar() {
    echo "$FUNCNAME fuction begins"
}

echo 'begin main'
foo
foobar
echo 'end main'

Will output:

begin main
foo fuction begins
foobar fuction begins
end main