[LyX/2.5.x] Prepare for 2.5.1

commit 9884456d02ac4aabefc4deb0a7770a53fe77909e
Author: Richard Kimberly Heck <[email protected]>
Date:   Sun Apr 12 14:54:51 2026 -0400

    Prepare for 2.5.1
---
 ANNOUNCE     | 123 ++++++++++++++++++++++++++++++++++++++++++++++++-----------
 NEWS         |   9 +++++
 configure.ac |   4 +-
 3 files changed, 111 insertions(+), 25 deletions(-)

diff --git a/ANNOUNCE b/ANNOUNCE
index a6d33df9c7..fb0e43f7ac 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,19 +1,13 @@
 Public release of LyX version 2.5.0
 ===================================
 
-We are proud to announce the release the new LyX 2.5.0. The 2.5 series has a
-rich set of new features compared to the 2.4 series. An overview of the new
-features can be found here:
+We are proud to announce the release the LyX 2.5.1, the first maintenance
+release in the 2.5.x series.
 
-  https://wiki.lyx.org/LyX/NewInLyX25
-
-This release also celebrates LyX's 30th anniversary, just a bit late: The
-first versions were released in 1995.
-
-As this release ships with new features, we strongly recommend that packagers
-of LyX on various platforms and distributions read RELEASE-NOTES in order to
-get the new dependencies right. That file contains additional information about
-some of the changes from 2.4.x.
+This release fixes a number of mostly minor bugs in 2.5.0. One important fix
+concerns crashes when exiting LyX on OSX, specifically when documents are still
+open. We have also fixed a handful of bugs with the new input method support.
+If you should encounter any more, please do let us know.
 
 If a file from an earlier version of LyX is opened *and saved* with any version
 of 2.5.x, then the original file will automatically be backed up. The backup
@@ -21,23 +15,106 @@ file will be found in the backup directory, if one is set under
 Tools> Preferences> Paths
 or else in the same folder as the original file, if no backup directory is set.
 
-The file RELEASE-NOTES also lists some known issues and problems compared
-to the current stable releases (LyX 2.4.x).
-
-As with any major release, this one comes with a lot of new features but also
-some bugs. If you think you have found a bug in LyX 2.5.0, either email the
-LyX developers' mailing list (lyx-devel at lists.lyx.org), or open a bug report
-at
+If you think you may have found a bug in LyX 2.5.1, either email the developers'
+mailing list (lyx-devel at lists.lyx.org), or open a bug report at
   https://www.lyx.org/trac/wiki/BugTrackerHome
 Please specify if the behavior you are reporting is different from behavior in
 a previous LyX version. Please note that we have had to disable registration
-for new accounts due to spam. If you would like an account, email the
+for new accounts due to spam. If you would like an account, email the LyX
 developers' list.
 
 If you have trouble using LyX or have a question, consult the documentation
-that comes with LyX (under Help) and the LyX wiki, which you
-will find at https://wiki.lyx.org/. You can also send email to the LyX users'
-list (lyx-users at lists.lyx.org).
+that comes with LyX (under Help) and the LyX wiki, which you will find at
+https://wiki.lyx.org/. You can also send email to the LyX users' list
+(lyx-users at lists.lyx.org).
 
 The LyX team.
 https://www.lyx.org
+
+What's new
+==========
+
+** Updates:
+***********
+
+* DOCUMENT INPUT/OUTPUT
+
+- Support the Sioyek PDF viewer.
+
+
+* USER INTERFACE
+
+-  Enable dark/light mode preference setting on Linux.
+   This is supported at least for QT_QPA_PLATFORMTHEME=gtk3 (bug 12224).
+
+
+* DOCUMENTATION AND LOCALIZATION
+
+- Update the KOMA-Letter (v. 2) template.
+
+- Add a German KOMA-Letter (v. 2) template.
+
+- Update Brazilian Portuguese, Czech, Dutch, German, Italian, Japanese, and
+  Slovak translations.
+
+
+* BUILD/INSTALLATION
+
+- Accept macos SDKs with version 20 and higher to build bundle package.
+
+
+
+** Bug fixes:
+*************
+
+* DOCUMENT INPUT/OUTPUT
+
+- Fix an assertion caused by the new Input Method implementation in relation to
+  the change of work area.
+
+- Properly resolve font in insets that do not inherit font (bug 13278).
+
+- Fix switch of text direction with verbatim content (bug 6373).
+
+- Fix several cases where language begin/end commands have not been
+  properly nested when "Set document language explicitly" or
+  "Unset document language explicitly" have been selected in preferences.
+
+- Fix old docbook layouts.
+
+
+* USER INTERFACE
+
+- Fix crash in mathed when using cursor right to end the input of
+  macro names like \alpha.
+
+- Fix crash when quitting LyX on recent macOS versions.
+
+- Fix cross-references dialog in mathed (bug 13285).
+
+- Fix pasting of partial math grids (bug 13277).
+
+- Fix logic of auto-insertion to argument insets (part of 12364).
+
+- Automatically insert overlay argument of beamer layouts (part of 12364).
+
+- Fix empty paragraph check in pasting (bug 13281).
+
+- Do not allow to split InsetArgument which does not make sense.
+
+- Fix initial value of custom color dialog.
+
+- Build InsetInfo info also when inset is hidden in collapsible (bug 13280).
+
+- Fix computer algebra system bug: converting the displayed math
+  into eqnarray* environment (bug 13247).
+
+- Fix PDF->PNG conversion problem on macOS. Now gs takes priority over sips
+  on that os (bug 12632).
+
+- Reintroduce a proper version of a broken optimization that was removed for 2.5.0.
+
+
+* TEX2LYX
+
+- Update tex2lyx support for babel-german.
diff --git a/NEWS b/NEWS
index bd129365bf..f2957d69e5 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,12 @@
+What's new in version 2.5.1?
+----------------------------
+
+This release fixes a number of mostly minor bugs in 2.5.0. One important fix
+concerns crashes when exiting LyX on OSX, specifically when documents are still
+open. We have also fixed a handful of bugs with the new input method support.
+If you should encounter any more, please do let us know.
+
+
 What's new in version 2.5.0?
 ----------------------------
 
diff --git a/configure.ac b/configure.ac
index f094a644f7..e48dd0285a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,9 +1,9 @@
 dnl Process with autoconf to generate configure script   -*- sh -*-
 
-AC_INIT([LyX],[2.5.1~devel],[[email protected]],[lyx])
+AC_INIT([LyX],[2.5.1],[[email protected]],[lyx])
 AC_PRESERVE_HELP_ORDER
 # Use ISO format only. The frontend needs to parse this
-AC_SUBST(LYX_DATE, ["2026-02-13"])
+AC_SUBST(LYX_DATE, ["2026-04-12"])
 AC_PREREQ([2.65])
 AC_CONFIG_SRCDIR(src/main.cpp)
 AC_CONFIG_HEADERS([config.h])
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