fish_key_reader man page
fish_key_reader -- explore what characters keyboard keys send
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:
--continuousbegins a session where multiple key sequences can be inspected. By default the program exits after capturing a single key sequence.
--debug-level=DEBUG_LEVELenables debug output and specifies a verbosity level (like
fish -d). Defaults to 0.
--debug-stack-frames=DEBUG_LEVELspecify 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.
--helpprints usage information.
--versionprints fish_key_reader's version and exits.
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
fish_key_reader intentionally disables handling of many signals. To terminate
--continuous mode do: