Normative: Add String.prototype.replaceAll #2009

mathiasbynens · 2020-05-24T10:38:16Z

Proposal: https://github.com/tc39/proposal-string-replaceall

Note that the changes to String.prototype.matchAll that were part of this proposal have already been merged here: #1716.

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mathiasbynens · 2020-05-25T05:44:08Z

Thanks for the reviews! I've addressed the feedback.

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jmdyck

LGTM

syg

lgtm with small nits below

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gibson042 · 2020-06-01T15:55:18Z

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+              1. Assert: Type(_replaceValue_) is String.
+              1. Let _captures_ be a new empty List.
+              1. Let _replacement_ be ! GetSubstitution(_searchString_, _string_, _position_, _captures_, *undefined*, _replaceValue_).
+            1. Let _stringSlice_ be the substring of _string_ consisting of the code units from _endOfLastMatch_ (inclusive) up to _position_ (exclusive).


Consistency suggestion (cf. #2021):

Suggested change

1. Let _stringSlice_ be the substring of _string_ consisting of the code units from _endOfLastMatch_ (inclusive) up to _position_ (exclusive).

1. Let _stringSlice_ be the substring of _string_ consisting of the code units at indices _endOfLastMatch_ (inclusive) through _position_ (exclusive).

Note that the notation in #2021 is still in flux and no longer matches the suggestion.

What should I do here? Happy to make any changes to get this to a land-able state.

If we're going to land it before #2021, it doesn't matter what we do here.

edit: To clarify, you should just leave it as it is.

Seems like this one will be able to land before #2021, but I think whichever one lands first should rebase and ensure this prose is consistent?

@ljharb This PR is consistent with existing forms currently.

Seems like it should stay that way then, until #2021 is merged.

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gibson042

Looks good!

gibson042 · 2020-06-03T08:23:37Z

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+          1. Let _advanceBy_ be max(1, _searchLength_).
+          1. Let _matchPositions_ be a new empty List.
+          1. Let _position_ be ! StringIndexOf(_string_, _searchString_, 0).
+          1. Repeat, while _position_ is not -1,


Your test in String.prototype.includes is If _index_ ≥ 0. I don't have a preference for "≥ 0" vs. "is not -1", but I do have a preference for them to match.

I've made the change. This is a little awkward though:

If index is not -1, return true. Return false.

In code you'd probably write it as:

If index is -1, return false. Return true.

🤷

The upstream spec PR (tc39/ecma262#2009) still needs to be merged, but we can already update this repository.

Proposal: https://github.com/tc39/proposal-string-replaceall Note that the changes to String.prototype.matchAll that were part of this proposal have already been merged here: tc39#1716. Co-authored-by: Jakob Gruber <[email protected]> Co-authored-by: Mathias Bynens <[email protected]>

PR tc39#2009 recently introduced StringIndexOf, locating its definition in a subclause of "10 ECMAScript Language: Source Code". This placement doesn't make much sense, as StringIndexOf isn't particularly related to source code. This commit relocates it to 6.1.4 The String Type.

mathiasbynens added needs consensus This needs committee consensus before it can be eligible to be merged. has test262 tests labels May 24, 2020

mathiasbynens commented May 24, 2020

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Advance to stage 4 tc39/proposal-string-replaceall#28

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ljharb added has stage 4 This PR represents a proposal that has achieved stage 4, and is ready to merge. and removed pending stage 4 This proposal has not yet achieved stage 4, but may otherwise be ready to merge. labels Jun 2, 2020

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Advance to stage 4 tc39/proposal-string-replaceall#38

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Advance to stage 4 (#38)

0dd32b2

The upstream spec PR (tc39/ecma262#2009) still needs to be merged, but we can already update this repository.

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Editorial: Relocate the definition of StringIndexOf #2069

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Editorial: reword StringIndexOf in terms of substring #2258

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Normative: Add String.prototype.replaceAll #2009

Normative: Add String.prototype.replaceAll #2009

mathiasbynens commented May 24, 2020

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mathiasbynens Jun 3, 2020

	1. Let _stringSlice_ be the substring of _string_ consisting of the code units from _endOfLastMatch_ (inclusive) up to _position_ (exclusive).
	1. Let _stringSlice_ be the substring of _string_ consisting of the code units at indices _endOfLastMatch_ (inclusive) through _position_ (exclusive).

Normative: Add String.prototype.replaceAll #2009

Normative: Add String.prototype.replaceAll #2009

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