doc: fix an unclear wording in readline.md
PR-URL: https://github.com/nodejs/node/pull/12605 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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@ -403,8 +403,8 @@ a `'resize'` event on the `output` if or when the columns ever change
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### Use of the `completer` Function
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### Use of the `completer` Function
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When called, the `completer` function is provided the current line entered by
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The `completer` function takes the current line entered by the user
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the user, and is expected to return an Array with 2 entries:
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as an argument, and returns an Array with 2 entries:
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* An Array with matching entries for the completion.
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* An Array with matching entries for the completion.
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* The substring that was used for the matching.
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* The substring that was used for the matching.
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