New file RELEASE-CHECKLIST.wiki in Wikimedia format.

* etc/RELEASE-CHECKLIST.wiki: New file.

etc/RELEASE-CHECKLIST.wiki

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+= VERSION.1 Release Checklist =
+
+'''Timeline''' (tentative)
+
+* YYYY-MM-DD 🚀 Release Kick-off ⚽ (default branch merged to stable)
+* YYYY-MM-DD 🛠️ 1st release candidate '''VERSION.0.90''' on https://alpha.gnu.org/gnu/octave/
+* YYYY-MM-DD 🏁 Final Release 🎉 '''VERSION.1.0''' on https://ftp.gnu.org/gnu/octave/
+
+Please use <code>&lt;strike&gt; &lt;/strike&gt;</code> to mark items below as done.
+
+== 🚀 Kick-off ⚽ ==
+
+-----
+
+=== ⚙️ Update stable and default branch to new version numbers ===
+
+Completion Date:
+
+* Merge default onto stable to become the current stable release (see instructions in <code>etc/HACKING.md</code>).
+* Bump version numbers in <code>configure.ac</code> on stable branch (see <code>etc/HACKING.md</code>).
+* Bump version numbers in <code>configure.ac</code> on default branch (see <code>etc/HACKING.md</code>).
+* Create new <code>etc/NEWS.VERSION+1.md</code> file on default branch by copying <code>etc/NEWS.VERSION.md</code> and then removing text so that it is a template file with headings only.
+
+=== ⚙️ Update gnulib to latest version ===
+
+Completion Date:
+
+'''Must occur first''' as it could resolve existing, or create new, bug reports. You should run <code>./bootstrap</code> in the source tree after updating to the new gnulib version.
+
+=== 📢 Call for bug reports ===
+
+Completion Date:
+
+* Put out a general call for reports on [https://octave.discourse.group/ Octave Discourse] for all outstanding, but unreported, known bugs.
+* Create Savannah <code>Release</code> tag <code>VERSION.0.90</code> on bug tracker for 1st release candidate.
+* Mark items that should be fixed for the release with this tag.
+* Update Savannah <code>Planned Release</code> and <code>Fixed Release</code> tags by adding <code>VERSION.1.0 (current stable)</code> and <code>VERSION+1.1.0 (current default)</code>.
+* Review bug overview at https://octave.space/savannah/.
+
+=== 📢 Update GUI translation files ===
+
+Completion Date:
+
+* Call for updates ([https://octave.discourse.group/ Octave Discourse]) that might change GUI strings.
+* String freeze date:
+* Update language translation files (<code>*.ts</code>). See instructions in <code>libgui/languages/build_ts/README.md</code>.
+* Create bug report on Savannah as a centralized location for uploading files and tracking status of translations.
+* Call for translations of GUI strings on [https://octave.discourse.group/c/maintainers/7 Octave Discourse Maintainers], CC-ing the translators (see [https://hg.savannah.gnu.org/hgweb/octave/file/tip/libgui/languages/translators list of translators]).
+* Collect translation files on Savannah bug report and push to Mercurial.
+
+=== ⚖️ GPL License activities ===
+
+Completion Date:
+
+<ul>
+<li><p>Update copyright statements for all source controlled files.</p>
+<p>Command to update copyright notifications</p>
+<p><code>hg locate | xargs sed -i 's/Copyright (C) \([0-9][0-9][0-9][0-9]\)-2023 The Octave Project Developers/Copyright (C) \1-2024 The Octave Project Developers/; s/Copyright (C) 2023 The Octave Project Developers/Copyright (C) 2023-2024 The Octave Project Developers/'</code></p>
+<p>Command to check results before checking in</p>
+<p><code>hg diff | grep ^[-+][^-+] | sed 's/[0-9][0-9][0-9][0-9]-/YYYY-/' | sort -u</code></p></li>
+<li><p>Update dates in any other locations (<code>CITATION</code>, MXE <code>README.html</code> file).</p></li>
+<li><p>Add any new contributors to <code>doc/interpreter/contributors.in</code> who wish to be mentioned (don’t add them without permission).</p></li></ul>
+
+=== ✅ Style-check code base ===
+
+Completion Date:
+
+This will produce lots of whitespace changes, but no behavior changes. '''Must occur after patches have been added''', since whitespace changes can prevent patches from applying.
+
+* [https://wiki.octave.org/Octave_style_guide m-file style check]
+* [https://wiki.octave.org/C%2B%2B_style_guide C++ style check]
+
+=== 📖 Review documentation ===
+
+Completion Date:
+
+* Grammar check documentation (See <code>doc/interpreter/doccheck/README</code>).
+* Spell check documentation (<code>make spellcheck</code>).
+* Verify no functions missing from manual (<code>make doc/interpreter/undocumented_list</code>).
+* Verify deprecated functions removed from manual (<code>*.txi</code>) and from “see also” links.
+* Verify all formats (Info, HTML, PDF) build correctly.
+* Review <code>etc/NEWS.VERSION.md</code> for any features which should be announced.
+* Review <code>__unimplemented__.m</code> for the latest changes to [https://wiki.octave.org/Octave_Forge Octave Forge] packages and new Matlab functions.
+* Update <code>installer-files/README.html</code> in MXE Octave with version highlights.
+
+== 🔃 Repeat until all bugs are resolved ==
+
+
+-----
+
+Completion Date of first iteration:
+
+=== ⚠️ Current state at Savannah ===
+
+Bug overview at https://octave.space/savannah/.
+
+=== ✅ <code>make check</code> ===
+
+* Verify <code>make check</code> is passing on all [http://buildbot.octave.org:8010/#/waterfall buildbot combinations of OS and compilers] and [https://github.com/gnu-octave/octave/actions GitHub CI runners]. Also check [https://github.com/gnu-octave/octave-buildbot/actions test suite runs on “freshly brewed Octave for Windows”] (Kai’s buildbots on octave.space).
+* Use software tools to check quality of Octave code.
+** Check for memory leaks by configuring with <code>--enable-address-sanitizer-flags</code> and compiling with <code>-g -O0 -fno-optimize-sibling-calls</code> in <code>CFLAGS</code>, <code>CXXFLAGS</code>, and <code>LDFLAGS</code>.
+** Check for bad memory accesses by compiling with <code>-g -O0 -fsanitize=undefined -fno-omit-frame-pointer   -fno-optimize-sibling-calls</code> in <code>CFLAGS</code>, <code>CXXFLAGS</code>, and <code>LDFLAGS</code>.
+** Update static code analysis results.
+*** For <code>clang</code>, do <code>scan-build make -j&lt;N&gt; all</code> and then <code>scan-view</code>.
+*** See [https://wiki.octave.org/PVS_static_analyzer_-_5.0_Release PVS static analyzer - 5.0 Release].
+** Use other tools such as <code>cppcheck</code>, etc.
+* Start discussion on [https://octave.discourse.group/c/maintainers/8 Octave Discourse Maintainers] about which failing tests that must be fixed and which can be declared '''WON’T FIX'''.
+
+=== 🛠️ Create new release candidate ===
+
+* Ensure correct version information (see “Release Numbering” in <code>/etc/HACKING.md</code>).
+* Create <code>hg tag</code> in repository with release candidate version number (<code>rc-MAJOR-MINOR-PATCH</code>).
+* Verify <code>make dist</code> works.
+* Verify <code>make distcheck</code> passes.
+* Create [https://wiki.octave.org/Windows_Installer Windows Installer].
+* Upload release candidates to https://alpha.gnu.org/gnu/octave/.
+* Check [https://wiki.octave.org/Windows_Installer Windows Installer] (executable and zip formats) against false positive detection at [https://virustotal.com/ virustotal.com].
+* Add release candidate version to Savannah bug tracker.
+* Announce release candidate to [https://octave.discourse.group/ Octave Discourse].
+
+== 🏁 Final Release 🎉 ==
+
+
+-----
+
+=== 📃 Update version information ===
+
+Completion Date:
+
+* Ensure correct version information in <code>configure.ac</code> (see “Release Numbering” in <code>/etc/HACKING.md</code>)
+** Set <code>OCTAVE_RELEASE_DATE</code> to the current date.
+** Set the year in <code>OCTAVE_COPYRIGHT</code> to the current year.
+* Create <code>hg tag</code> in repository with release candidate version number (<code>release-VERSION-1-0</code>).
+* Update <code>etc/NEWS.VERSION.md</code> (final release date in Summary header).
+* Update <code>CITATION</code> (version, year, URL) if not already done as part of &quot;GPL License activities.
+* Update <code>etc/icons/org.octave.Octave.appdata.xml</code> (version number and release date).
+* Upload all tarballs to https://ftp.gnu.org/gnu/octave/.
+* Update web site files: <code>NEWS-VERSION.html</code>, <code>index.in</code>, <code>news.in</code>, and <code>download.in</code>.
+* Update https://wiki.octave.org/Release_History page.
+* Update Savannah bug tracker <code>Release</code> field to have new release number.
+* Update Savannah bug tracker: '''OPEN''' bugs marked as '''WON’T FIX''' should be marked as '''CONFIRMED''' (or more appropriate) for the final release.
+* Hide release candidate versions for <code>Release</code> field on Savannah.
+
+=== 📢 Announce final release ===
+
+Completion Date:
+
+* Octave mailing-lists (yes, still) [mailto:[email protected] [email protected]] and [mailto:[email protected] [email protected]].
+* Octave web site (https://hg.octave.org/web-octave)
+* Steps documented in this [https://hg.octave.org/web-octave/rev/fe59d0118a2b changeset].
+* Upload documentation (manual HTML + PDF <code>octave.org/doc</code> and version in <code>octave.org/.htaccess</code>, Doxygen <code>octave.org/doxygen</code>)
+* This wiki
+* Template:Release = 7.3.0
+* Template:Release Date = November 2, 2022
+* Template:Release Year = 2022
+
+=== ☑️ Post-Release ===
+
+Completion Date:
+
+* Remove all deprecated functions scheduled for deletion on default branch. These functions are tagged with <code>OCTAVE_DEPRECATED</code> in C++ or are m-files located in the directory <code>scripts/deprecated</code>. Check file <code>etc/NEWS.VERSION-2.md</code> for list of features that have been deprecated.