add escapeCodeTimeout as an option to createInterface #19780

raoofha · 2018-04-03T19:39:45Z

500ms for application like readline-vim is very annoying. this PR allow the developer to control the timeout.

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
commit message follows commit guidelines

Trott · 2018-04-03T20:36:05Z

Hi, @raoofha and welcome! Thanks for the pull request!

Some immediate thoughts:

If we're going to export this, we'll need to add documentation for it. Totally OK if you're not comfortable writing the final text, but a draft of what you think should go in the docs would be very helpful.
Since this adds functionality, there should be a test for it. At a minimum, a test file should load readline and confirm that the property is exported, confirm that setting it to a few invalid values has the expected affect (which should be documented--ignore invalid value? throw? coerce to something valid? something else?), and (if possible) confirm that setting it to something very low and/or very high has the desired affect.
If we're exporting it, then it's no longer a constant and we probably want to change the name from ESCAPE_CODE_TIMEOUT to something more like escapeCodeTimeout.

/ping @thlorenz

addaleax · 2018-04-03T20:39:44Z

Would it make sense to do this on a per-instance basis, rather than for each Node.js process as a whole?

jasnell · 2018-04-03T20:54:28Z

lib/readline.js

@@ -1133,5 +1130,6 @@ module.exports = {
  createInterface,
  cursorTo,
  emitKeypressEvents,
-  moveCursor
+  moveCursor,
+  ESCAPE_CODE_TIMEOUT : 500 // GNU readline library - keyseq-timeout is 500ms (default)


If we're going to do this, passing escapeCodeTimeout as an option to readline.createInterface() would seem to be the better approach.

raoofha · 2018-04-04T06:49:30Z

I add doc ( copyed from here ) and manually test it on my machine. I don't know how to write test for it, if you can tell me how maybe I can do it. thanks

Trott · 2018-04-04T12:23:58Z

Sorry @raoofha, I should have included this link with my comment! https://github.com/nodejs/node/blob/master/doc/guides/writing-tests.md

Hope it helps. (And if it doesn't, maybe you can give some feedback and we can try to improve it!)

raoofha · 2018-04-04T16:18:43Z

thanks @Trott for your comments. I added a simple test and waiting for your review.

Trott · 2018-04-04T16:59:07Z

I rebased to get rid of the conflict, and also reworded the documentation. (Hope that's OK!)

CI: https://ci.nodejs.org/job/node-test-pull-request/14049/

Trott · 2018-04-04T19:18:44Z

CI failures are unrelated. Re-running relevant jobs.

Re-run FreeBSD: https://ci.nodejs.org/job/node-test-commit-freebsd/16720/
Re-run Linux: https://ci.nodejs.org/job/node-test-commit-linux/17640/

BridgeAR · 2018-04-09T11:12:06Z

lib/readline.js

+      Number.isNaN(escapeCodeTimeout) ||
+      escapeCodeTimeout < 0) {
+    escapeCodeTimeout = ESCAPE_CODE_TIMEOUT;
+  }


Suggestion: the check could be moved in the upper if.

BridgeAR · 2018-04-09T11:13:41Z

lib/readline.js

+                timeoutId = setTimeout(
+                  escapeCodeTimeoutFn,
+                  ESCAPE_CODE_TIMEOUT
+                );


Suggestion: just write:

timeoutId = setTimeout(escapeCodeTimeoutFn, iface ? iface.escapeCodeTimeout : ESCAPE_CODE_TIMEOUT);

BridgeAR · 2018-04-09T11:15:25Z

doc/api/readline.md

+    character when reading an ambiguous key sequence (one that can both form a
+    complete key sequence using the input read so far and can take additional
+    input to complete a longer key sequence). The default value is used if
+    `NaN`, a negative number, or a non-number is provided. **Default:** `500`.


It is unclear in what unit the time is measured here. It should say something like The duration readline will wait for a character when reading an ambiguous key sequence in milliseconds (...).

I personally would also only accept integers but that is just me.

BridgeAR · 2018-04-28T15:04:51Z

test/parallel/test-readline-interface-escapecodetimeout.js

+  });
+  assert.strictEqual(rli.escapeCodeTimeout, ESCAPE_CODE_TIMEOUT);
+  rli.close();
+}


These tests are doing all the same thing and are just duplicated. It would be best to write:

[ null, {}, NaN, '50' ].forEach((invalidInput) => { const fi = new FakeInput(); const rli = new readline.Interface({ input: fi, output: fi, escapeCodeTimeout: invalidInput }); assert.strictEqual(rli.escapeCodeTimeout, ESCAPE_CODE_TIMEOUT); rli.close(); });

cjihrig

Left a few comments. Mostly trying to make the diff less noisy.

cjihrig · 2018-05-05T18:38:33Z

doc/api/readline.md

@@ -373,6 +373,12 @@ changes:
  * `removeHistoryDuplicates` {boolean} If `true`, when a new input line added
    to the history list duplicates an older one, this removes the older line
    from the list. **Default:** `false`.
+  * `escapeCodeTimeout` {number} The duration `readline` will wait for a
+    character when reading an ambiguous key sequence in milliseconds (one that 


The parentheses should probably go next to "ambiguous key sequence"

cjihrig · 2018-05-05T18:43:21Z

lib/readline.js

@@ -94,10 +95,16 @@ function Interface(input, output, completer, terminal) {
    if (input.prompt !== undefined) {
      prompt = input.prompt;
    }
+    if (typeof input.escapeCodeTimeout === 'number' &&


Perhaps Number.isFinite() should be used here. It's also probably better to throw, rather than silently use a different value.

cjihrig · 2018-05-05T18:45:54Z

lib/readline.js

    crlfDelay = input.crlfDelay;
    input = input.input;
  }

+


Could you remove this new blank line.

cjihrig · 2018-05-05T18:47:25Z

lib/readline.js

@@ -126,7 +133,7 @@ function Interface(input, output, completer, terminal) {
  this.removeHistoryDuplicates = !!removeHistoryDuplicates;
  this.crlfDelay = crlfDelay ?
    Math.max(kMincrlfDelay, crlfDelay) : kMincrlfDelay;
-
+  this.escapeCodeTimeout = escapeCodeTimeout;


escapeCodeTimeout isn't used between here and line 101. I don't think you need to create an intermediate variable for it.

cjihrig · 2018-05-05T18:48:12Z

lib/readline.js

@@ -992,7 +999,7 @@ function emitKeypressEvents(stream, iface) {
  stream[ESCAPE_DECODER] = emitKeys(stream);
  stream[ESCAPE_DECODER].next();

-  const escapeCodeTimeout = () => stream[ESCAPE_DECODER].next('');
+  const escapeCodeTimeoutFn = () => stream[ESCAPE_DECODER].next('');


And if you don't introduce a new intermediate variable, you don't need to rename this.

BridgeAR · 2018-05-15T15:38:21Z

@raoofha if you have some time, would you be so kind and have a look at the comments? :-)

raoofha · 2018-05-15T17:07:28Z

@BridgeAR sorry, I will

raoofha · 2018-05-15T19:01:37Z

@cjihrig @BridgeAR thanks for your reviews please look at the last commit, and sorry for the delay

BridgeAR · 2018-05-15T20:20:24Z

lib/readline.js

    crlfDelay = input.crlfDelay;
    input = input.input;
  }

+  if (!Number.isFinite(this.escapeCodeTimeout)) {


This should be moved into the added upper if statement, since it is only necessary to test to possible provided option. If non was passed through, we already know that the value is finite.

raoofha · 2018-05-16T05:11:36Z

@BridgeAR please take a look again

raoofha · 2018-07-12T06:23:10Z

hi @BridgeAR wondering when this is going to merge, or is there something that I have to do first?

maclover7 · 2018-08-11T20:36:08Z

CI: https://ci.nodejs.org/job/node-test-pull-request/16372/

@BridgeAR I believe your comments have been addressed, PTAL

jasnell · 2018-09-10T18:10:23Z

Ping @BridgeAR

lundibundi · 2018-10-15T20:32:42Z

~~CI: https://ci.nodejs.org/job/node-test-pull-request/17876/~~
Resume CI: https://ci.nodejs.org/job/node-test-pull-request/17891/

Changes LGTM but I'm not familiar with realine, hence no green mark.

ping @BridgeAR.

BridgeAR

LGTM

BridgeAR · 2018-10-16T07:52:42Z

Just as note: this did not have to wait on me. I did not block anything.

refack · 2018-10-16T13:50:21Z

Resume: https://ci.nodejs.org/job/node-test-pull-request/17905/

escapeCodeTimeout option in createInterface default to ESCAPE_CODE_TIMEOUT = 500 when set to a NaN or negative number or a value other than a number set back to default value

@BridgeAR

as suggested by @BridgeAR

refack · 2018-10-16T14:49:07Z

Had to rebase in order to get a proper CI: https://ci.nodejs.org/job/node-test-pull-request/17910/

Trott · 2018-10-18T04:48:02Z

Resume Build: https://ci.nodejs.org/job/node-test-pull-request/17960/

PR-URL: #19780 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

jasnell · 2018-10-25T23:52:21Z

Landed in c829202

PR-URL: #19780 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: #19780 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

nodejs-github-bot added the readline Issues and PRs related to the built-in readline module. label Apr 3, 2018

Trott added the semver-minor PRs that contain new features and should be released in the next minor version. label Apr 3, 2018

jasnell requested changes Apr 3, 2018

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raoofha changed the title ~~export ESCAPE_CODE_TIMEOUT~~ add escapeCodeTimeout as an option to createInterface Apr 4, 2018

Trott force-pushed the master branch from 4d288d9 to 6176779 Compare April 4, 2018 16:58

jasnell approved these changes Apr 4, 2018

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BridgeAR reviewed Apr 9, 2018

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BridgeAR reviewed Apr 28, 2018

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cjihrig reviewed May 5, 2018

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BridgeAR reviewed May 15, 2018

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jasnell added the stalled Issues and PRs that are stalled. label Sep 10, 2018

BridgeAR approved these changes Oct 16, 2018

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BridgeAR added author ready PRs that have at least one approval, no pending requests for changes, and a CI started. and removed stalled Issues and PRs that are stalled. labels Oct 16, 2018

raoofha and others added 6 commits October 16, 2018 10:47

export ESCAPE_CODE_TIMEOUT

991174e

lib: add escapeCodeTimeout as an option to createInterface

a58d9db

escapeCodeTimeout option in createInterface default to ESCAPE_CODE_TIMEOUT = 500 when set to a NaN or negative number or a value other than a number set back to default value

test: add simple test to ensures escapeCodeTimeout option set correctly

0586244

lib: rewrite the same code for escapeCodeTimeout option

b0b8ba5

as suggested by @BridgeAR

lib: rewrite the same code again :)

fb1ce38

lib: rewrite the same code for the third time

5a25fd5

refack force-pushed the master branch from a83c9d8 to 5a25fd5 Compare October 16, 2018 14:48

jasnell pushed a commit that referenced this pull request Oct 25, 2018

lib: add escapeCodeTimeout as an option to createInterface

c829202

PR-URL: #19780 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

jasnell closed this Oct 25, 2018

targos pushed a commit that referenced this pull request Oct 26, 2018

lib: add escapeCodeTimeout as an option to createInterface

2e91771

PR-URL: #19780 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

targos mentioned this pull request Oct 27, 2018

Release proposal: v11.1.0 #23922

Merged

targos pushed a commit that referenced this pull request Nov 1, 2018

lib: add escapeCodeTimeout as an option to createInterface

1c5ffb3

PR-URL: #19780 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

BethGriggs mentioned this pull request May 1, 2019

v10.16.0 proposal #27514

Merged

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add escapeCodeTimeout as an option to createInterface #19780

add escapeCodeTimeout as an option to createInterface #19780

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add escapeCodeTimeout as an option to createInterface #19780

add escapeCodeTimeout as an option to createInterface #19780

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