Fza command

Fza runs a command once and allows to filter the output dynamically

Usage:

Fza cmd

Fza opens a new acme window named for the current directory with a suffix of /+fuzzy. The window shows the (potentially filtered) output of the command and a prompt.

The command and arguments are joined by spaces and passed to rc(1) to be interpreted as a shell command line. If there is no command, Fza starts with a `fd --type f` if it exists, or `find` otherwise, on the current directory

The command is printed at the top of the window, preceded by a "% " prompt. Changing that line changes the command that will be run and fill the list of possible output lines. It is rerun every time Get is executed.

The filtering prompt starts with a "filter>" prefix and matches all output lines to only show the matching ones. Filtering happens when executing Get as well, or if typing Enter at the end of the filter line.

Executing Quit sends a SIGQUIT on systems that support that signal. (Go programs receiving that signal will dump goroutine stacks and exit.)

Executing Kill stops any commands being executed. On Unix it sends the commands a SIGINT, followed 100ms later by a SIGTERM, followed 100ms later by a SIGKILL. On other systems it sends os.Interrupt followed 100ms later by os.Kill