gawk: Readline Support

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1 14.4 Readline Support
1 =====================
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1 If 'gawk' is compiled with the GNU Readline library
1 (http://cnswww.cns.cwru.edu/php/chet/readline/readline.html), you can
1 take advantage of that library's command completion and history
1 expansion features.  The following types of completion are available:
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1 Command completion
1      Command names.
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1 Source file name completion
1      Source file names.  Relevant commands are 'break', 'clear', 'list',
1      'tbreak', and 'until'.
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1 Argument completion
1      Non-numeric arguments to a command.  Relevant commands are 'enable'
1      and 'info'.
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1 Variable name completion
1      Global variable names, and function arguments in the current
1      context if the program is running.  Relevant commands are
1      'display', 'print', 'set', and 'watch'.
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