Readline Support (The GNU Awk User’s Guide)

From Get docs
Gawk/docs/latest/Readline-Support


14.4 Readline Support

If gawk is compiled with the GNU Readline library, you can take advantage of that library’s command completion and history expansion features. The following types of completion are available:

Command completion
Command names.
Source file name completion
Source file names. Relevant commands are break, clear, list, tbreak, and until.
Argument completion
Non-numeric arguments to a command. Relevant commands are enable and info.
Variable name completion
Global variable names, and function arguments in the current context if the program is running. Relevant commands are display, print, set, and watch.