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doc: document readline keybindings #20825

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doc: document readline keybindings #20825

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13ecfa3
doc: adds handeled tty write keybindings
shobhitchittora May 18, 2018
60165b7
doc: add the keybindings to readline doc. Also -
shobhitchittora May 21, 2018
c39f8b6
doc: fixes as per review comments
shobhitchittora May 24, 2018
2faec19
doc: highlighting code + capital case description
shobhitchittora May 24, 2018
e3d38dd
doc: fixes typo
shobhitchittora May 24, 2018
76d462c
doc: adds description for ctrl+z
shobhitchittora May 26, 2018
67e3d92
doc: fixes line warnings + removes nbsp;
shobhitchittora May 27, 2018
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105 changes: 104 additions & 1 deletion doc/api/readline.md
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Expand Up @@ -287,7 +287,8 @@ added: v0.1.98

The `rl.write()` method will write either `data` or a key sequence identified
by `key` to the `output`. The `key` argument is supported only if `output` is
a [TTY][] text terminal.
a [TTY][] text terminal. See [`TTY keybindings`][] for a list of key
combinations.

If `key` is specified, `data` is ignored.

Expand Down Expand Up @@ -527,11 +528,113 @@ rl.on('line', (line) => {
});
```

## TTY keybindings

<table>
<tr>
<th>Keybindings</th>
<th>Description</th>
</tr>
<tr>
<td><code>ctrl+shift+backspace</code></td>
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Suggestion: add whitespace between the individual commands and maybe also only highlight the keys, not the plus. As in: <code>ctrl</code> + <code>shift</code> + <code>backspace</code>

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Any reason these are wrapped in <code> and not <kbd>?

<td>delete line left</td>
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Not a must but I personally would prefer the descriptions all to start with a upper case character.

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done.

</tr>
<tr>
<td><code>ctrl+shift+delete</code></td>
<td>delete line right</td>
</tr>
<tr>
<td><code>ctrl+c</code></td>
<td>emit SIGINT</td>
</tr>
<tr>
<td><code>ctrl+h</code></td>
<td>delete left</td>
</tr>
<tr>
<td><code>ctrl+d</code></td>
<td>delete right or EOF</td>
</tr>
<tr>
<td><code>ctrl+u</code></td>
<td>delete from current to line start</td>
</tr>
<tr>
<td><code>ctrl+k</code></td>
<td>delete from current to end of line</td>
</tr>
<tr>
<td><code>ctrl+a</code></td>
<td>go to start of line</td>
</tr>
<tr>
<td><code>ctrl+e</code></td>
<td>go to to end of line</td>
</tr>
<tr>
<td><code>ctrl+b</code></td>
<td>back one character</td>
</tr>
<tr>
<td><code>ctrl+f</code></td>
<td>forward one character</td>
</tr>
<tr>
<td><code>ctrl+l</code></td>
<td>clear screen </td>
</tr>
<tr>
<td><code>ctrl+n</code></td>
<td>next history item</td>
</tr>
<tr>
<td><code>ctrl+p</code></td>
<td>previous history item </td>
</tr>
<tr>
<td><code>ctrl+z</code></td>
<td>(need clarification)</td>
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@shobhitchittora shobhitchittora May 24, 2018 •
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Hey team.
Need clarification on this keybinding. I cannot think of a description for this. Can someone help with this?

cc @BridgeAR @vsemozhetbyt

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I do not know, sorry(

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@BridgeAR I found this for ctrl + z -
https://nodejs.org/api/readline.html#readline_event_sigtstp

If it's fine we can either ref to this or take the first paragraph and add here.

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Please document it as e.g.: Moves running process into background. Type 'fg' and press 'enter' to return..

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done.

</tr>
<tr>
<td><code>ctrl+w</code> or <code>ctrl+backspace</code></td>
<td>delete backwards to a word boundary</td>
</tr>
<tr>
<td><code>ctrl+delete</code></td>
<td>delete forward to a word boundary</td>
</tr>
<tr>
<td><code>ctrl+left</code></td>
<td>word left </td>
</tr>
<tr>
<td><code>ctrl+right</code></td>
<td>word right</td>
</tr>
<tr>
<td><code>meta+b</code></td>
<td>word left</td>
</tr>
<tr>
<td><code>meta+f</code></td>
<td>word right</td>
</tr>
<tr>
<td><code>meta+d</code> or <code>meta+delete</code></td>
<td>delete word right</td>
</tr>
<tr>
<td><code>meta+backspace</code></td>
<td>delete word left </td>
</tr>
</table>

[`'SIGCONT'`]: readline.html#readline_event_sigcont
[`'SIGTSTP'`]: readline.html#readline_event_sigtstp
[`process.stdin`]: process.html#process_process_stdin
[`process.stdout`]: process.html#process_process_stdout
[Readable]: stream.html#stream_readable_streams
[TTY]: tty.html
[TTY keybindings]: #readline_tty_keybindings
[Writable]: stream.html#stream_writable_streams
[reading files]: #readline_example_read_file_stream_line_by_line
4 changes: 4 additions & 0 deletions doc/api/repl.md
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Expand Up @@ -67,6 +67,8 @@ The following key combinations in the REPL have these special effects:
variables. When pressed while entering other input, displays relevant
autocompletion options.

For a full list of special keys, refer to [TTY keybindings][].

### Default Evaluation

By default, all instances of `repl.REPLServer` use an evaluation function that
Expand Down Expand Up @@ -632,5 +634,7 @@ For an example of running a REPL instance over [curl(1)][], see:
[`readline.InterfaceCompleter`]: readline.html#readline_use_of_the_completer_function
[`readline.Interface`]: readline.html#readline_class_interface
[`util.inspect()`]: util.html#util_util_inspect_object_options
[TTY keybindings]: readline.html#readline_tty_keybindings
[curl(1)]: https://curl.haxx.se/docs/manpage.html
[stream]: stream.html

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This empty line seems unneeded)

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done.