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doc: simplify readline/stdin text #41583

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Jan 23, 2022
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doc: simplify readline/stdin text #41583

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13 changes: 3 additions & 10 deletions doc/api/readline.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1059,15 +1059,8 @@ a `'resize'` event on the `output` if or when the columns ever change
([`process.stdout`][] does this automatically when it is a TTY).

When creating a `readline.Interface` using `stdin` as input, the program
will not terminate until it receives `EOF` (<kbd>Ctrl</kbd>+<kbd>D</kbd> on
Linux/macOS, <kbd>Ctrl</kbd>+<kbd>Z</kbd> followed by <kbd>Return</kbd> on
Windows).
If you want your application to exit without waiting for user input, you can
[`unref()`][] the standard input stream:

```js
process.stdin.unref();
```
will not terminate until it receives an [EOF character][]. To exit without
waiting for user input, call `process.stdin.unref()`.
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Is removing the reference to the unref() documentation intentional?

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Yes although it wasn't an easy decision. The choices were:

  • Use wording that isn't straightforward simply so we can include unref() by itself and link that to the net docs. (This is what the existing text does.)
  • Use the simple/straightforward wording here but add a possibly-confusing link for process.stdin.unref() to the net doc description of unref().
  • Use the simple/straightforward wording here that tells the user what they need to know, and don't bother with a link to unref(). At a later date, address the fact that our docs can be non-intuitive. If I find process.stdin.unref() mentioned in code or a tutorial, good luck finding it in the docs. I'm not sure what the solution is, but I think we should solve it. We should not be relying on linking every mention to a surprising place.


#### Use of the `completer` function

Expand Down Expand Up @@ -1395,6 +1388,7 @@ const { createInterface } = require('readline');
</tr>
</table>

[EOF character]: https://en.wikipedia.org/wiki/End-of-file#EOF_character
[Readable]: stream.md#readable-streams
[TTY]: tty.md
[TTY keybindings]: #tty-keybindings
Expand All @@ -1406,5 +1400,4 @@ const { createInterface } = require('readline');
[`process.stdin`]: process.md#processstdin
[`process.stdout`]: process.md#processstdout
[`rl.close()`]: #rlclose
[`unref()`]: net.md#socketunref
[reading files]: #example-read-file-stream-line-by-line