so that full path to the executable or a renamed executable
parses command-line arguments correctly as before.
Special thanks to @apriendeau for discovering "go test -v" failing
and for providing the initial workaround, see #155 and subsequent
discussions.
In Pull Request #178, the use of `builtin compopt` as a test condition
is inappropriate. Use `[[ $(type -t compopt) = "builtin" ]]` instead.
Also clean up formatting of the resulting bash completion script.
This first `cd` to a specified directory, then
lists the subdirectories therein with `_filedir -d`.
This can be used by e.g. `hugo --theme=[Tab][Tab]`, which would
give a list of subdirectories under the `themes` directory.
A corner case exists where c.Runnable() is not checked
before c.Run() is called, thus a nil c.Run is executed
leading to "panic: runtime error: invalid memory address
or nil pointer dereference".
This patch adds an extra c.Runnable() check in execute()
to catch that corner case.
Fixes#37.
Anthony Fok