NAME

       fish_key_readerfish_key_reader - explore what characters keyboard keys send
        -

   Synopsis
       fish_key_reader [OPTIONS]

   Description
       fish_key_reader is used to study input received from the terminal and can help with key
       binds. The program is interactive and works on standard input. Individual characters
       themselves and their hexadecimal values are displayed.

       The tool will write an example bind command matching the character sequence captured to
       stdout. If the character sequence matches a special key name (see bind --key-names), both
       bind CHARS ... and bind -k KEYNAME ... usage will be shown. Additional details about the
       characters received, such as the delay between chars, are written to stderr.

       The following options are available:

       • -c or --continuous begins a session where multiple key sequences can be inspected. By
         default the program exits after capturing a single key sequence.

       • -d or --debug-level=DEBUG_LEVEL enables debug output and specifies a verbosity level
         (like fish -d). Defaults to 0.

       • -D or --debug-stack-frames=DEBUG_LEVEL specify how many stack frames to display when
         debug messages are written. The default is zero. A value of 3 or 4 is usually sufficient
         to gain insight into how a given debug call was reached but you can specify a value up
         to 128.

       • -h or --help prints usage information.

       • -v or --version prints fish_key_reader's version and exits.

   Usage Notes
       The delay in milliseconds since the previous character was received is included in the
       diagnostic information written to stderr. This information may be useful to determine the
       optimal fish_escape_delay_ms setting or learn the amount of lag introduced by tools like
       ssh, mosh or tmux.

       fish_key_reader intentionally disables handling of many signals. To terminate
       fish_key_reader in --continuous mode do:

       • press Ctrl-C twice, or

       • press Ctrl-D twice, or

       • type exit, or

       • type quit