I know that in Bash you can use the syntax
which will set
new_editor if the variable
new_editor is not empty and to
/usr/bin/vi otherwise. Is it possible to produce similar one-liner, which will set
editor to output of some command and to some default value if the output is empty? Something like (only as example, this does not work)
editor=$( $(which emacs) :-/usr/bin/vi )
I know how to do it in several lines of code, but would like to know if an elegant solution exists.