8199594: Add doc describing how (?x) ignores spaces in character classes

[igraves]

Clarifying note on comments mode to explicitly note that whitespace within character classes is ignored.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed

Integration blocker

 ⚠️ The change requires a CSR request to be approved.

Issue

• JDK-8199594: Add doc describing how (?x) ignores spaces in character classes

Reviewers

• Brian Burkhalter (@bplb - Reviewer) ⚠️ Review applies to 8ab051a

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/3577/head:pull/3577
$ git checkout pull/3577

Update a local copy of the PR:
$ git checkout pull/3577
$ git pull https://git.openjdk.java.net/jdk pull/3577/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 3577

View PR using the GUI difftool:
$ git pr show -t 3577

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/3577.diff

[bridgekeeper]

👋 Welcome back igraves! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@igraves The following label will be automatically applied to this pull request:

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[mlbridge]

Webrevs

• 02: Full - Incremental (79390124)
• 01: Full - Incremental (f4507e3a)
• 00: Full (8ab051aa)

[bplb]

Looks all right. Probably a CSR is in order.

[openjdk]

@igraves This change is no longer ready for integration - check the PR body for details.

[igraves]

Will put a /csr in to be safe.

[igraves]

/csr

[openjdk]

@igraves has indicated that a compatibility and specification (CSR) request is needed for this pull request.
@igraves please create a CSR request and add link to it in JDK-8199594. This pull request cannot be integrated until the CSR request is approved.

[stuart-marks]

A few minor wording adjustments. Please update the CSR accordingly and I'll review it too.

[igraves]

Wording updated per @stuart-marks's suggestions. Thanks! CSR updated accordingly.

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[bridgekeeper]

@igraves This pull request has been inactive for more than 8 weeks and will now be automatically closed. If you would like to continue working on this pull request in the future, feel free to reopen it! This can be done using the /open pull request command.