documentation for REPL completion is somewhat obscure #3674

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1. mscdex

   added

   docIssues and PRs related to Node.js documentation.Issues and PRs related to Node.js documentation.

   replIssues and PRs related to the REPL subsystem.Issues and PRs related to the REPL subsystem.

   on Nov 5, 2015
2. kapouer commented on Nov 5, 2015

   

   kapouer

   on Nov 5, 2015

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   Of course the obvious interpretation is

   repl.start({
       eval: function(cmd, context, filename, cb) {
           if (cmd == ".scope") {
               return cb(null, ["array", "of", "strings"]);
           }
           inst.run(cmd, cb);
       }
   });
   

   yet i don't think my eval function is ever called with that cmd argument being equal to ".scope" ?
   Anyway i don't get it.
3. bnoordhuis commented on Nov 5, 2015

   

   bnoordhuis

   on Nov 5, 2015

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   yet i don't think my eval function is ever called with that cmd argument being equal to ".scope" ?

   That's #3544 (comment) - I couldn't make it work either.
4. Fishrock123 commented on Nov 5, 2015

   

   Fishrock123

   on Nov 5, 2015

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   I'll keep it on my radar, but I don't think I'll get to looking at it soon.
5. udnisap commented on Nov 25, 2015

   

   udnisap

   on Nov 25, 2015

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   Looks like the tab completion is called when it has a object ending with a .

   For example try this

   var _ = require('lodash');
   var repl = require('repl');
   
   var replServer = repl.start({});
   replServer.eval = _.wrap(replServer.eval, function(eval, cmd, context, filename, callback) {
       console.warn('eval with:', arguments);
       arguments[4] = _.wrap(callback, function(resultCallback){
           console.warn('result callbackdata:', arguments);
           resultCallback.apply(this, Array.prototype.slice.call(arguments, 1));
       });
       eval.apply(this, Array.prototype.slice.call(arguments, 1));
   });

   and run on the repl

   >Array.<tab>
   

   On tab completion - eval will be called with .scope as an input string. It is expected to return an array of scope names to be used for the auto-completion.

   means that if an object in the scope is in the promt with an ending . and user press on tab, eval is called with the object without the .

   node implementation is at https://github.com/nodejs/node/blob/v5.x/lib/repl.js
6. Trott commented on Jun 8, 2016

   

   Trott

   on Jun 8, 2016

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   The offending text doesn't appear to be in the REPL docs anymore. I'm going to close this. Please comment or re-open if there's something I'm misunderstanding.
7. Trott

   closed this as completedon Jun 8, 2016