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    <p>You can't use <code>rlwrap</code>'s line editing/history and your repl's TAB completion at the same time.</p> <p><code>rlwrap</code> provides line editing, history and (very simple) completion for commands <em>that don't have it</em>. A command that has something as fancy as TAB completion shouldn't need <code>rlwrap</code> to do its line editing, should it?</p> <p>The <code>-a</code> (<code>--always-readline</code>) option is a rather crude way to <em>substitute</em> rlwrap's line editing behaviour for that of your command. It is primarily meant for commands that have a very simple line editor, without e.g. command history</p> <p>If you want to use the <code>-a</code> option because you prefer <code>rlwrap</code>'s fanciness (like persistent history, or coloured prompts) to your command's (like TAB completion), go ahead, but it is impossible to pick some fanciness of one and keep some of the other.</p> <p>This is the (small) price programs (and their users) have to pay for avoiding the <code>readline</code> library and the GPL license that comes with it. </p> <p>Hans (<code>rlwrap</code> author) </p> <p><hr> Edit (April 2017):</p> <p>In many cases it will be possible to use a <a href="https://github.com/hanslub42/rlwrap/wiki/RlwrapFilter.pm-manpage" rel="nofollow noreferrer">filter</a> to restore completion. See <a href="https://stackoverflow.com/questions/43505223/a-node-shell-based-on-gnu-readline/43677273#43677273">A node shell based on readline</a> for an example of this.</p>
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    1. POCan rlwrap use a wrapped command's own TAB completion?
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    1. USHans Lub
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    1. POCan rlwrap use a wrapped command's own TAB completion?
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    1. COThe Erlang shell has TAB completion, but lacks in several other areas. No history between sessions, limited line editing capabilities etc.
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      1. USAdam Lindberg
    2. CO@Hans do you see any reasons why, if I change rlwrap's source and remove the TAB from the special keys or maybe rewire it to some other key, I won't get this to work? Haven't had time to try, but I'm taking advantage that you answered my post.
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      1. USGabriel Tudor
    3. CO@ Gabriel: Removing TAB from the "special keys" is not enough, this will only give you a dead TAB key. What really needs to be done is that the TAB clears the input buffer of the underlying command, passes the current readline input buffer to it, positions its cursor, then passes the TAB, parses the resulting output (including cursor movement commands), and finally fills the readline input buffer and sets rl_point accordingly. All of these steps are difficult and error-prone; especially the parsing of your command's output would require rlwrap to contain a virtual terminal emulator.
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      1. USHans Lub
 

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