This only works on versions of Bash before v4.2-048!
In versions of Bash < 4.2-048, it’s possible to export functions with the same form as absolute paths to files. These functions will then be executed instead of the fully-specified path if the calling application is relying on the current shell for helper execution.
For example:
function /path/to/executable { /bin/bash -p; }
export -f /path/to/executable