+!Important Change in LyX 2.3.1
+
+* A change to how math macros are output can break some documents that use
+ ERT to comment out macros. Please see bug #11216 if you experience this
+ sort of problem.
+
+
!Important Changes in LyX 2.3.0
!!Interface changes
-* LyX now has "inverted" branch insets, which output their contents just in
+* LyX now has "inverted" branch insets, which output their contents just in
case a given branch is not "activated". This makes inclusion of alternate
material in different versions easier.
be safely dissolved, as it will be automatically inserted at export time
if needed, as usual.
-* LyX now outputs en- and em-dashes as -- and --- ligatures when exporting to
- latex using TeX fonts, as done in version 2.1 and earlier. In version 2.2
- they were instead output as the macros \textendash and \textemdash, causing
- changed output with old documents and bugs. The 2.2 behavior can be restored
- by don't allowing using dash ligatures in Document->Settings->Fonts.
+* The new setting
+ "Document->Settings->Fonts->Disallow line breaks after dashes"
+ turns off the conversion of em- and en-dash characters to --- and --
+ respectively for LaTeX export. It is is "false" by default.
+ See chapter 3.9.1.1 "Dashes and Line Breaks" of the User Guide and
+ "Caveats when upgrading from earlier versions to 2.3.x" below.
+
+* The preference "Tools->Preferences->Look&Feel->Screen Fonts->Use
+ pixmap cache to speed up font rendering" is not available anymore.
+ It was of dubious value and led to rendering issues.
+
+* The following UI translations were dropped, because of the lack of translation
+ maintenance: Catalan, Danish, Dutch, Galician, Romanian, Serbian.
+
+!!Documents compilation process and images conversion
+
+* It is now possible to enable the -shell-escape option only for specific
+ documents, rather than having to enable it globally in preferences.
+ This is achieved by checking "Allow running external programs" in
+ Document->Settings->Formats. LyX will now check whether -shell-escape
+ has been added to a LaTeX converter and invites the user to remove it
+ in favor of the new mechanism when that LaTeX converter is used.
+
+* The converters definition syntax (LYX_HOME/lyxrc*) now supports a
+ new option, 'needauth', to prevent completely automated execution of
+ the converter, unless LyX acquired explicit consent by the
+ user. This is a new security feature, useful for converters that are
+ capable of executing arbitrary code, such as R scripts (used with
+ sweave/knitr), embedded within LyX documents. The user needs to
+ explicitly grant per-document permission on the first need for using
+ the converter on each document, unless he/she checks the "Don't ask
+ again for this document" checkbox in the permission dialog. The new
+ behavior can be fine-tuned from two new options in the preferences
+ dialog (see their description below). These also allow for disabling
+ 'needauth' converters altogether, if desired (default behavior).
+
+* LyX now supports insertion and automated conversion of Gnuplot scripts,
+ recognized by their typical extension ".gp" or ".gnuplot". These can
+ directly be inserted in a LyX document using the "Insert->Graphics..."
+ dialog, then selecting the Gnuplot script. LyX automatically adds a
+ proper "set terminal ..." and "set output ..." line to convert the
+ file to the needed output format (e.g., .eps, .pdf), depending on
+ whether the document is being previewed on screen or compiled as PDF
+ or other formats. Terminal options cannot be fine-tuned at the moment,
+ but that's a capability that may come soon, also according to the
+ received feedback from users.
!!!The following pref variables were added in 2.3:
+* \default_platex_view_format
+ Determine the default output format for Japanese documents that use the
+ pLaTeX backend [default: "pdf3" == "PDF (dvipdfm)"]
-!!!The following pref variables were changed in 2.3:
+* \jbibtex_alternatives
+ Alternative bibliography converters for Japanese.
+
+* \pygmentize_command
+ holds the name of the driver command used by the Pygments python module.
-* \document_path
- Default is changed to ".". The best guess for where the user wants to save
- or find files is the directory the user started LyX from. Before, the
- default was always the home directory. If desired, the old behavior can be
- restored by changing the default path in Preferences > "Working directory".
+* \use_converter_needauth
+ when enabled, user is asked before calling any (possibly dangerous)
+ external converter with the 'needauth' option
+* \use_converter_needauth_forbidden
+ when enabled, use of external converters with the 'needauth' option is
+ forbidden
-!!!The following pref variables are obsoleted in 2.3:
+!!!The following pref variables were changed in 2.3:
+
+* \bibtex_command
+ New (default) value "auto".
+
+* \screen_zoom
+ This is now independent of the value set via buffer-zoom[-in|-out].
+
+* \use_pixmap_cache
+ The value of this variable is now ignored.
!!!The following new LyX functions have been introduced in 2.3:
+* buffer-external-modification-clear
+ Clear the external modification flag on the current buffer
+
+* buffer-zoom
+ Zooms the screen fonts to a given value or resets to the default zoom
+ when no argument is given.
+
* branch-invert
Toggles inversion status of branch inset.
+* devel-mode-toggle
+ Activate/deactivate the developer mode, which consists mainly in:
+ (1) more information shown in the status bar and (2) help file
+ opened in editable mode. This state used to be hardcoded at compile
+ time.
+
+* buffer-anonymize (2.3.2)
+ Replace all text n the document by streams of `a'. This is useful
+ for sharing private documents in a bug report.
+
+* font-crossout
+ Cross out characters.
+
+* icon-size [size in px]
+ Set the icon size in the toolbar
+
* lyx-activate
Activates the LyX window. Useful in combination with reverse search.
+* toolbar-movable
+ Toggles movability of a given toolbar.
+
!!!The following LyX functions have been changed in 2.3:
-* quote-insert
- The function now has a second and third optional argument to specify
- the side (left, right, auto) and quotation mark style (english, swedish,
- german, polish, french, danish).
+* buffer-export
+ If no or "default" argument is given, the function now exports to the default
+ output format.
+
+* buffer-zoom-in, buffer-zoom-out
+ The Zoom value set by these is now relative to the default zoom value set in
+ preferences.
+
+* environment-split
+ The new arguments "before" and "previous" can be used for finer control on
+ where/how the new environment is created.
* inset-modify
This function now also applies to quote insets. It takes a three-character
- string as an argument, refering (1.) to the style (e = ``english'',
+ string as an argument, referring (1.) to the style (e = ``english'',
s = ''swedish'', g = ,,german``, p = ,,polish'', f = <<french>>, a = >>danish<<),
(2.) to the side (l = left, r = right) and (3.) to the quotation level
(s = single, d = double). So "eld" means "English left double quotation mark".
"inset-forall Quotes inset-modify changetype g.s"
=> change all quote insets to German single quotes, keeping left/right setting
+* layout
+ The new argument "ignorenests" can be used to ignore nesting advice contained
+ in the layout tag "AutoNests".
+
+* paragraph-break
+ The new argument "ignoresep" can be used to break without accounting for
+ separators.
+
+* paragraph-goto
+ The function has now two further optional arguments that determine end positions.
+ If specified, a selection is performed.
+
+* quote-insert
+ The function now has a second and third optional argument to specify
+ the side (left, right, auto) and quotation mark style (english, swedish,
+ german, polish, french, danish).
+
+* specialchar-insert
+ New option allowbreak that adds an invisible line break option,
-!!!The following LyX documents have been moved in 2.3:
+* word-delete-forward, word-delete-backward, char-delete-forward,
+ char-delete-backward
+ The pre-2.3 behavior of these functions is equivalent to the 2.3 behavior with
+ the "force" option appended. The new default behavior (without "force") is
+ to select big insets on the first call and delete them only on the second.
+ This new behavior is consistent with how delete works in LyX's math editor.
!!!The following new folders have been added to the LyX directory
files that are now shipped as content of the xtemplates directory.
-!!!The following metadata files have been added to the tarball in 2.3:
-
-
!!Changes with respect to external programs and libraries in 2.3:
-* Inkscape SVG with separate LaTeX + PDF output is experimentally supported.
+* LyX now supports only macOS 10.9 and higher (due to using Qt 5.9).
+
+* Inkscape SVG with separate LaTeX + PDF or PS output is supported via External
+ Material.
* Add some editor/viewer applications to (re)configure checks.
+* The included Hunspell has been upgraded to version 1.6.2.
+
+* The included libiconv has been upgraded to version 1.15.
+
+* LyX now includes a Qt-based fallback-converter for Mac to compensate missing
+ ImageMagick convert utility.
+
!!Known issues in version 2.3.0
+* See http://www.lyx.org/trac/wiki/BugTrackerHome .
+
!!Caveats when upgrading from earlier versions to 2.3.x
the external_templates file, you will have to move the modifications to
the respective *.xtemplate file manually.
-* If using TeX fonts and en- and em-dashes are output as font ligatures,
- when exporting documents containing en- and em-dashes to the format of
- LyX 2.0 or earlier, the following line has to be manually added to the
- unicodesymbols file of that LyX version:<br>
- 0x200b "\\hspace{0pt}" "" "" "" "" # ZERO WIDTH SPACE<br>
- This avoids "uncodable character" issues if the document is actually
- loaded by that LyX version. LyX 2.1 and later versions already have the
- necessary definition in their unicodesymbols file.
+* By default, LyX 2.3 outputs en- and em-dashes as -- and --- respectively,
+ so that a line break can occur in the output immediately after the dash.
+ Sometimes, this results in undesired line breaks or overfull lines due to
+ suppression of hyphenation in the word preceding the dash.
+ Select "Document->Settings->Fonts->Disallow line breaks after dashes"
+ to keep the LyX 2.2 behaviour.
+ See chapter 3.9.1.1, "Dashes and Line Breaks", of the User Guide
+ for details.
+
+* If trying to compile documents using R scripts and sweave/knitr, LyX
+ 2.3.x would not allow for re-running the R scripts, unless the user:
+ 1) explicitly disables the "Forbid use of needauth converters"
+ option in the LyX preferences;
+ 2) provides explicit consent to the use of the converter on the first
+ compilation of the R-enhanced document.
+
+* LyX now gives a warning if a document mixes title and non-title layouts.
+ In some cases, this warning is harmless, but in other cases the document has
+ a serious problem even though the LaTeX command does not exit with error. For
+ example, create a document with a title layout, then a standard layout, and
+ then an author layout, and you will see in the PDF that the author is not
+ typeset as an author.
+
+
+!! If upgrading from a LyX version before 2.2.0
+
+* Please additionally see the release notes from the versions in-between:
+ https://wiki.lyx.org/LyX/ReleaseNotes
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