CheckExclusive verifies that only a single instance of the provided flags was set by the user.

Fatalf formats a message to standard error and exits the program.

GlobalBig returns the value of a BigFlag from the global flag set.

GlobalTextMarshaler returns the value of a TextMarshalerFlag from the global flag set.

This allows the use of the existing configuration functionality.

NewApp creates an app with sane defaults.

BigFlag is a command line flag that accepts 256 bit big integers in decimal or hexadecimal syntax.

Custom cli.Flag type which expand the received string to an absolute path.

TextMarshalerFlag wraps a TextMarshaler value.

Custom type which is registered in the flags library which cli uses for argument parsing.