--- a/.hgignore	Tue Dec 04 10:12:41 2018 -0800
+++ b/.hgignore	Thu Dec 20 17:18:56 2018 -0500
@@ -1,53 +1,121 @@
 syntax: regexp
-# The recurrent (^|/) idiom in the regexps below should be understood
-# to mean "at any directory" while the ^ idiom means "from the
-# project's top-level directory".
+## The recurrent (^|/) idiom in the regexps below should be understood
+## to mean "at any directory" while the ^ idiom means "from the
+## project's top-level directory".
 
-# gnulib makes these silly backup files
+## gnulib related files
+# gnulib makes these silly backup files.
 .~$
-
 # This directory gets created by gnulib during the build.
 # It contains no Octave files.
-^libgnu($|/)
+(^|/)libgnu($|/)
 
+## m4 related files
 # This directory mostly contains cruft during build time, but it does
-# contain some Octave code, so we gotta be a bit more careful about
-# what we ignore here
+# contain some Octave code, so be more careful about what we ignore here.
 ^m4/(?!ax_).+\.m4$
 
-# Emacs tools create these
+## Autoconf, Automake automatically generated files
+^aclocal\.m4$
+^autom4te\.cache($|/)
+^config\.in\.h$
+^configure$
+(^|/)config.cache$
+(^|/)config.h$
+(^|/)config.log$
+(^|/)config.status$
+
+^Makefile\.in$
+^INSTALL$
+
+## Emacs associated files
 (^|/)TAGS$
 (^|/)semantic.cache$
 
-(/|^)Makefile\.in$
-^INSTALL$
-
-^aclocal\.m4$
-^autom4te\.cache($|/)
+## Scripts associated with building Octave
 ^build-aux/config\.(guess|rpath|sub)$
+(^|/)build-aux/check-subst-vars\.sh$
 ^build-aux/depcomp$
 ^build-aux/install-sh$
 ^build-aux/ltmain\.sh$
 ^build-aux/mdate-sh$
 ^build-aux/missing$
 ^build-aux/move-if-change$
+(^|/)build-aux/subst-config-vals\.sh$
+(^|/)build-aux/subst-cross-config-vals\.sh$
+(^|/)build-aux/subst-script-vals\.sh$
 ^build-aux/texinfo\.tex$
 ^build-aux/ylwrap$
-^config\.in\.h$
-^configure$
+
+## Mercurial associated files
+(^|/)HG-ID$
+
+## Timestamp files used in build process
+.*/\.dirstamp$
+.*/\.octave-dirstamp$
+
+## Intermediate compilation results for libraries
+.*\.la$
+.*/\.libs/
+.*\.Plo$
+.*\.Po$
+
+
+## DLDFCN associated files
+^libinterp/dldfcn/module\.mk$
+(^|/)libinterp/dldfcn/PKG_ADD$
+(^|/)libinterp/dldfcn/.*\.oct$
 
-# e.g. doc/faq/OctaveFAQ.info
-#      doc/interpreter/octave.info-4
+## liboctave/ directory associated patterns
+# E.g., liboctave/operators/smx-op-inc.mk
+^liboctave/operators/\w+-op-\w+\.mk$
+
+## scripts/ directory associated patterns
+# Package files
+(^|/)scripts/.*/PKG_ADD$
+# Java files
+(^|/)scripts/java/octave\.jar$
+(^|/)scripts/java/org/octave/.*\.class$
+
+## libgui/ associated patterns
+# Files generated by moc tool
+(^|/)libgui/.*/moc-.*\.(cc|h)$
+(^|/)libgui/languages/.*\.qm$
+
+## Ignore patterns associated with documentation
+# Info generated files
+# E.g., doc/faq/OctaveFAQ.info, doc/interpreter/octave.info-4
 ^doc/\w+/\w+\.info(-\d+)?$
 
+# Texinfo created temporary directories
+(^|/)doc/(interpreter|liboctave)/(octave|liboctave)\.t2(d|p)/
+# Texinfo created files
+(^|/)doc/interpreter/.*\.texi$
+
+# DOCSTRINGS files built in the source tree
+(^|/)(libinterp|scripts)/DOCSTRINGS$
+
+# Generated HTML directories
+(^|/)doc/interpreter/octave\.html/
+(^|/)doc/liboctave/liboctave\.html/
+
+# Miscellaneous auto-generated files 
+(^|/)doc/interpreter/octave\.dvi$
+(^|/)doc/interpreter/octave\.ps$
+(^|/)doc/interpreter/doc-cache$
+(^|/)doc/interpreter/octave_interpreter\.q(ch|hc)$
+
+# Images and scripts for documentation
+^doc/interpreter/images\.mk$
+(^|/)doc/interpreter/.*\.eps$
+(^|/)doc/interpreter/.*\.pdf$
+(^|/)doc/interpreter/.*\.png$
+(^|/)doc/interpreter/.*\.txt$
+
+# timestamps for doc directory
 ^doc/\w+/stamp-(vti|\d+)$
 ^doc/\w+/version-\w+\.texi$
-^doc/interpreter/images\.mk$
-
-# e.g. liboctave/operators/smx-op-inc.mk
-^liboctave/operators/\w+-op-\w+\.mk$
 
-^libinterp/dldfcn/module\.mk$
+## Test associated patterns
+.*-tst$
 
-# DOCSTRINGS files are built in the source tree
-^(libinterp|scripts)/DOCSTRINGS$

--- a/.hgsubstate	Tue Dec 04 10:12:41 2018 -0800
+++ b/.hgsubstate	Thu Dec 20 17:18:56 2018 -0500
@@ -1,1 +1,1 @@
-791f51373ba1b80c8ae3b7a9d2509d8a827a3e25 gnulib
+a4bc639f000375e3522c56509d30d51a2740694b gnulib

--- a/Makefile.am	Tue Dec 04 10:12:41 2018 -0800
+++ b/Makefile.am	Thu Dec 20 17:18:56 2018 -0500
@@ -43,7 +43,7 @@
 
 # C compiler flags.
 
-AM_CFLAGS = ${CPICFLAG} ${XTRA_CFLAGS}
+AM_CFLAGS = ${CPICFLAG} ${XTRA_CFLAGS} ${WARN_CFLAGS}
 
 # ifeq (${INCLUDE_DEPS},no)
 #   omit_deps = true;
@@ -51,7 +51,7 @@
 
 # C++ compiler flags.
 
-AM_CXXFLAGS = ${CXXPICFLAG} ${XTRA_CXXFLAGS}
+AM_CXXFLAGS = ${CXXPICFLAG} ${XTRA_CXXFLAGS} ${WARN_CXXFLAGS}
 
 FFTW_XCPPFLAGS = @FFTW_XCPPFLAGS@
 FFTW_XLDFLAGS = @FFTW_XLDFLAGS@
@@ -102,6 +102,10 @@
 octfonts_DATA =
 octlocale_DATA =
 
+OCT_FILES =
+OCT_FILE_LIBS =
+OCT_FILE_PKG_ADD_FILES =
+
 DOC_TARGETS =
 
 BUILT_DISTFILES =
@@ -123,6 +127,7 @@
   INSTALL \
   NEWS \
   README \
+  octave.doap \
   run-octave.in \
   $(BUILT_DISTFILES)
 
@@ -148,6 +153,7 @@
 info_TEXINFOS =
 BUILT_SOURCES =
 TEST_FILES =
+noinst_TEST_FILES =
 
 DOC_IMAGES_SRC =
 BUILT_DOC_IMAGES =
@@ -183,6 +189,8 @@
 octinclude_HEADERS =
 nodist_octinclude_HEADERS =
 
+pkgconfig_DATA =
+
 DIST_SRC =
 
 ALL_LOCAL_TARGETS =
@@ -208,7 +216,6 @@
 include src/module.mk
 include scripts/module.mk
 include doc/module.mk
-include doc/interpreter/images.mk
 include etc/module.mk
 include examples/module.mk
 include m4/module.mk
@@ -220,6 +227,7 @@
   docs-dist-hook \
   fix-file-perms-dist-hook \
   hg-id-dist-hook \
+  appdata-dist-hook \
   icons-dist-hook \
   scripts-dist-hook
 
@@ -300,6 +308,9 @@
 nodist_octinclude_HEADERS += \
   octave-config.h
 
+OCTAVE_INTERPRETER_TARGETS += \
+  $(OCT_FILE_PKG_ADD_FILES)
+
 ALL_LOCAL_TARGETS += \
   $(OCTAVE_INTERPRETER_TARGETS) \
   .gdbinit \
@@ -359,7 +370,7 @@
   rm -f $@-t && \
   if [ -d $(srcdir)/.hg ]; then \
     ( cd $(srcdir); \
-      hg log --style=build-aux/changelog.tmpl --prune=b0e60ad4ae26 --only-branch=`hg branch`; \
+      hg log --no-graph --style=build-aux/changelog.tmpl --prune=b0e60ad4ae26 --only-branch=`hg branch`; \
       echo ""; \
       echo "See the files in the directory etc/OLD-ChangeLogs for changes before 2011-04-19"; \
     ) > $@-t && \
@@ -410,6 +421,39 @@
 
 install-data-local: installdirs-local
 
+oct-file-pkg-add: $(OCT_FILE_PKG_ADD_FILES)
+	cat $(OCT_FILE_PKG_ADD_FILES) > $@-t \
+	  && mv $@-t $@
+
+install-oct: oct-file-pkg-add
+	$(MKDIR_P) $(DESTDIR)$(octfiledir)
+	if [ -n "`cat $(OCT_FILE_PKG_ADD_FILES)`" ]; then \
+	  $(INSTALL_DATA) oct-file-pkg-add $(DESTDIR)$(octfiledir)/PKG_ADD; \
+	fi
+	cd $(DESTDIR)$(octlibdir) && \
+	for ltlib in $(OCT_FILE_LIBS); do \
+	  f=`echo $$ltlib | $(SED) 's,.*/,,'`; \
+	  dl=`$(SED) -n -e "s/dlname='\([^']*\)'/\1/p" < $$f`; \
+	  if [ -n "$$dl" ]; then \
+	    $(INSTALL_PROGRAM) $$dl $(DESTDIR)$(octfiledir)/`echo $$f | $(SED) 's,^lib,,; s,\.la$$,.oct,'`; \
+	  else \
+	    echo "error: dlname is empty in $$ltlib!"; \
+	    exit 1; \
+	  fi; \
+	  lnames=`$(SED) -n -e "s/library_names='\([^']*\)'/\1/p" < $$f`; \
+	  if [ -n "$$lnames" ]; then \
+	    rm -f $$f $$lnames $$dl; \
+	  fi \
+	done
+.PHONY: install-oct
+
+uninstall-oct:
+	for f in $(notdir $(OCT_FILES)); do \
+	  rm -f $(DESTDIR)$(octfiledir)/$$f; \
+	done
+	rm -f $(DESTDIR)$(octfiledir)/PKG_ADD
+.PHONY: uninstall-oct
+
 clean-local: doc-clean
 
 distclean-local:
@@ -458,38 +502,6 @@
   mv $@-t $@
 endef
 
-define subst-bison-api-decls
-  case "${BISON_API_PREFIX_DECL_STYLE}" in \
-    *api*) \
-      case "${BISON_API_PREFIX_DECL_STYLE}" in \
-       *brace*) \
-         api_prefix_decl='%define api.prefix {$(1)}'; ;; \
-       *) \
-         api_prefix_decl='%define api.prefix "$(1)"'; ;; \
-       esac; \
-      ;; \
-    *name*) \
-      case "${BISON_API_PREFIX_DECL_STYLE}" in \
-        *brace*) \
-          api_prefix_decl='%name-prefix {$(1)}'; ;; \
-        *) \
-          api_prefix_decl='%name-prefix="$(1)"'; ;; \
-      esac; \
-    ;; \
-  esac; \
-  case "${BISON_PUSH_PULL_DECL_STYLE}" in \
-    *quote*) quote='"' ;; \
-    *) quote="" ;; \
-  esac; \
-  case "${BISON_PUSH_PULL_DECL_STYLE}" in \
-    *dash*) push_pull_decl="%define api.push-pull $${quote}both$${quote}"; ;; \
-    *underscore*) push_pull_decl="%define api.push_pull $${quote}both$${quote}"; ;; \
-  esac; \
-  ${SED} -e "s/%PUSH_PULL_DECL%/$$push_pull_decl/" \
-         -e "s/%API_PREFIX_DECL%/$$api_prefix_decl/" $< > $@-t && \
-  mv $@-t $@
-endef
-
 define gdbinit-install-rule
   if [ -f $@ ] && ! cmp -s $< $@; then \
     echo "refusing to overwrite $@ with newer version from $<" 1>&2; \

--- a/NEWS	Tue Dec 04 10:12:41 2018 -0800
+++ b/NEWS	Thu Dec 20 17:18:56 2018 -0500
@@ -1,962 +1,246 @@
-Summary of important user-visible changes for version 4.4 (2018-04-30):
+Summary of important user-visible changes for version 5.0 (yyyy-mm-dd):
 ----------------------------------------------------------------------
 
- ** A graphical Variable Editor has been added to the GUI interface.
-    It uses a spreadsheet-like interface for quick, intuitive editing
-    of variables.  The Variable Editor is launched by double-clicking
-    on a variable name in the Workspace Window or by typing
-    "openvar VARIABLE_NAME" in the Command Window.
-
- ** On systems with 64-bit pointers, --enable-64 is now the default and
-    Octave always uses 64-bit indexing.  However, if the configure
-    script determines that the BLAS library uses 32-bit integers, then
-    operations using the following libraries are limited to arrays with
-    dimensions that are smaller than 2^31 elements:
-
-      BLAS  LAPACK  QRUPDATE  SuiteSparse  ARPACK
+ ** The determination of an object's dimensions, size, and shape by the
+    functions ndims, rows, columns, isscalar, isvector, isrow, iscolumn,
+    ismatrix, and issquare now fully depends on the function size.
+    Thus, any user-defined object can ensure correct treatment by the
+    aforementioned functions by properly overloading the "size"
+    function.
 
-    Additionally, the following libraries use "int" internally, so
-    maximum problem sizes are always limited:
-
-      glpk  Qhull
-
- ** The octave command no longer starts the GUI by default.  Most users
-    starting Octave from a shell were expecting the command line
-    interface, and desktop launchers already required the `--force-gui'
-    option.  With this change, desktop launchers should be modified to
-    use the new option `--gui'.  The previous `--force-gui' option will
-    continue to work, and maps to `--gui', but it will be removed in
-    Octave 6.
-
- ** A known bug in Qt (https://bugreports.qt.io/browse/QTBUG-55357) is
-    addressed by limiting GUI sub-panel relocation capabilities for Qt
-    versions in the range >= 5.6.1 and < 5.7.1.  However, this may not
-    thoroughly avoid issues on all platforms.
+ ** The function randi has been recoded to produce an unbiased (all
+    results are equally likely) sample of integers.  This may produce
+    different results in existing code.  If it is necessary to reproduce
+    the exact random integer sequence as in previous versions use
+    
+      ri = imin + floor ((imax - imin + 1) * rand ());
 
- ** A new container data type--containers.Map--is available.  Map is a
-    key/value storage container (a.k.a, a hash) that efficiently allows
-    storing and retrieving values by name, rather than by position which
-    is how arrays work.
+ ** A new core function movfun will apply a function to a sliding
+    window of arbitrary size on a dataset and accumulate the results.
+    Many common cases have been implemented using the naming
+    scheme movXXX where "XXX" is the function that will be applied.
+    For example, the moving average over a dataset is movmean.
+    New moving window functions:
+   
+    movfun   movslice
+    movmad   movmax   movmean   movmedian   movmin   movprod
+    movstd   movsum   movvar
 
- ** The bareword "import" is now recognized in scripts and functions.
-    However, the functionality to import functions and classes from
-    other namespaces into the local scope has not yet been implemented.
-    Attempting to use "import" will provoke an error message.
-
- ** hex2num and num2hex now work for integer and char types and num2hex
-    may optionally return a cell array of strings instead of a character
-    array.  If given a cell array of strings, hex2num now returns a
-    numeric array of the same size as the input cell array.  Previously,
-    hex2num would accept a cell array of strings of arbitrary dimension
-    but would always return a column vector.
+ ** The functions issymmetric and ishermitian accept an option "nonskew"
+    or "skew" to calculate the symmetric or skew-symmetric property
+    of a matrix.  Performance has also been increased.
 
- ** New special functions cosint, sinint, and gammaincinv have been added.
+ ** The function isdefinite now returns true or false rather than
+    -1, 0, 1.  To test for a positive semi-definite matrix (old output
+    of 0) check whether the following two conditions hold:
 
- ** Special functions in Octave have been rewritten for larger input
-    domains, better accuracy, and additional options.
-    * gammainc now accepts negative real values for X.
-    * improved accuracy for gammainc, betainc, betaincinv, expint.
-    * gammainc has new options "scaledlower" and "scaledupper".
-    * betainc, betaincinv have new option "upper".
+      isdefinite (A) => 0
+      isdefinite (A + 5*TOL, TOL) => 1
 
- ** The "names" option used in regular expressions now returns a struct
-    array, rather than a struct with a cell array for each field.  This
-    change was made for Matlab compatibility.
+ ** The issorted function now uses a direction option of "ascend" or
+    "descend" to make it compatible with both the sort function and
+    with Matlab.  Change all uses of "ascending" and "descending" in
+    existing code to the new options.
 
- ** The quadcc function now uses both absolute tolerance and relative
-    tolerance to determine the stopping criteria for an integration.
-    To be compatible with other quadXXX functions, such as quadgk, the
-    calling syntax has changed to
+ ** The strncmp and strncmpi functions now return true if the two input
+    strings match, even though the number of characters specified by N
+    exceeds the string length.  This behavior more closely matches
+    common sense and is Matlab compatible.  Example:
+
+      Octave 5.0 : strncmp ("abc", "abc", 100) => true
+      Previously : strncmp ("abc", "abc", 100) => false
 
-      quadcc (f, a, b, [AbsTol, [RelTol]])
-
-    To update existing code, change instances of RelTol to [0, RelTol].
-
-      quadcc (f, a, b, tol) => quadcc (f, a, b, [0, tol])
+ ** The intmax, intmin, and flintmax functions now accept a variable
+    as input.  This supports a common programming usage which is to
+    query the range of an existing variable.  Existing code can be
+    simplified by removing the call to "class" that was previously
+    required.  Example:
 
-    A warning that a single tolerance input is now interpreted as an
-    absolute tolerance will be issued in Octave versions 4.4 and 5,
-    after which it will be removed.  The warning has ID
-    "Octave:quadcc:RelTol-conversion" and can be disabled with
+                   x = int8 (3);
+      Octave 5.0 : range = [ intmin(x), intmax(x) ]
+      Previously : range = [ intmin(class(x)), intmax(class(x)) ]
 
-      warning ("off", "Octave:quadcc:RelTol-conversion")
-
- ** The qr function now returns a standard factorization unless
-    explicitly instructed to perform an economy factorization by using a
-    final argument of 0.
+ ** The ranks function has been recoded for performance and is now 25X
+    faster.  In addition, it now supports a third argument that
+    specifies how to resolve the ranking of tie values.
 
- ** The Qt graphics toolkit now supports offscreen printing without osmesa
-    if Octave was built with Qt >= 5.1.
-
- ** The built-in pager for display of large data is now disabled by
-    default.  To re-enable it for every Octave session add the following
-    to your .octaverc file:
-
-      more on;
+ ** The fsolve function has been tweaked to use larger step sizes when
+    calculating the Jacobian of a function with finite differences.
+    This leads to faster convergence.  The default solver options have
+    also changed to be Matlab compatible.  This *may* result in existing
+    code producing different results.
 
- ** The FLTK toolkit is no longer prioritized for development.  The
-    number of Octave Maintainers is too small to support three different
-    graphic toolkits.  New development will target the Qt toolkit.
-    While no longer prioritized, the FLTK toolkit is not deprecated and
-    there is no schedule for its removal.
-
- ** The graphic object property "PickableParts" has been implemented
-    which controls whether an object can accept mouse clicks.
+          Option     |  New Default   |  Old Default
+      ------------------------------------------------
+        FinDiffType  |   "forward"    |   "central"
+        MaxFunEvals  | 100*length(x0) |     Inf
+        TolFun       |     1e-6       |     1e-7
+        TolX         |     1e-6       |     1e-7
+        Updating     |     "off"      |     "on"
 
- ** The graphic object property "Interruptible" has been fully
-    implemented which controls whether a running callback function can
-    be interrupted by another callback function.
+ ** The fminsearch function has changed default solver options for
+    Matlab compatibility.  The accuracy option TolFun is now 1e-4 rather
+    than 1e-7.  This *may* result in existing code producing different
+    results.
 
- ** The graphic object property "HitTest" has been updated to be fully
-    compatible with Matlab.
+ ** The fminbnd function has changed defaults for Matlab compatibility.
+    This *may* result in existing code producing different results.
 
- ** Text objects now implement the properties "BackgroundColor",
-    "EdgeColor", "LineStyle", "LineWidth", and "Margin".
-
- ** An initial implementation of alpha transparency has been made for
-    patch and surface objects.  Printing to svg and pdf is supported.
+          Option     |  New Default   |  Old Default
+      ------------------------------------------------
+        MaxFunEvals  |      500       |     Inf
+        MaxIter      |      500       |     Inf
+        TolX         |     1e-4       |     1e-8
 
- ** ishandle now returns true for both graphics handle objects and
-    Java objects.  The latter change was made for Matlab compatibility.
-    Use ishghandle or isgraphics if it is important not to include Java
-    objects.
-
- ** The pkg command now accepts a URL as an argument, allowing a valid
-    Octave package to be installed from any remote host with one command,
-    for example
-
-      pkg install https://example.org/download/example-package.tar.gz
+ ** The fminunc function has changed defaults for Matlab compatibility.
+    This *may* result in existing code producing different results.
 
- ** The following statistical functions have been moved from core
-    Octave to the statistics package available from Octave Forge.
+          Option     |  New Default   |  Old Default
+      ------------------------------------------------
+        FinDiffType  |   "forward"    |   "central"
+        MaxFunEvals  | 100*length(x0) |     Inf
+        TolX         |     1e-6       |     1e-7
+        TolFun       |     1e-6       |     1e-7
 
-    BASE
-      cloglog
-      logit
-      prctile
-      probit
-      qqplot
-      table  (renamed to crosstab)
+ ** Using "clear" with no arguments now removes only local variables
+    from the current workspace.  Global variables will no longer be
+    visible, but they continue to exist in the global workspace and
+    possibly other workspaces such as the base workspace.
+    This change was made for Matlab compatibility.
 
-    DISTRIBUTIONS
-      betacdf
-      betainv
-      betapdf
-      betarnd
-      binocdf
-      binoinv
-      binopdf
-      binornd
-      cauchy_cdf
-      cauchy_inv
-      cauchy_pdf
-      cauchy_rnd
-      chi2cdf
-      chi2inv
-      chi2pdf
-      chi2rnd
-      expcdf
-      expinv
-      exppdf
-      exprnd
-      fcdf
-      finv
-      fpdf
-      frnd
-      gamcdf
-      gaminv
-      gampdf
-      gamrnd
-      geocdf
-      geoinv
-      geopdf
-      geornd
-      hygecdf
-      hygeinv
-      hygepdf
-      hygernd
-      kolmogorov_smirnov_cdf
-      laplace_cdf
-      laplace_inv
-      laplace_pdf
-      laplace_rnd
-      logistic_cdf
-      logistic_inv
-      logistic_pdf
-      logistic_rnd
-      logncdf
-      logninv
-      lognpdf
-      lognrnd
-      nbincdf
-      nbininv
-      nbinpdf
-      nbinrnd
-      normcdf
-      norminv
-      normpdf
-      normrnd
-      poisscdf
-      poissinv
-      poisspdf
-      poissrnd
-      stdnormal_cdf
-      stdnormal_inv
-      stdnormal_pdf
-      stdnormal_rnd
-      tcdf
-      tinv
-      tpdf
-      trnd
-      unidcdf
-      unidinv
-      unidpdf
-      unidrnd
-      unifcdf
-      unifinv
-      unifpdf
-      unifrnd
-      wblcdf
-      wblinv
-      wblpdf
-      wblrnd
-      wienrnd
+ ** The Octave plotting system now supports high resolution screens,
+    i.e, those with greater than 96 DPI which are referred to as
+    HiDPI/Retina monitors.
+
+ ** Figure graphic objects have a new property "Number" which is
+    read-only and will return the handle (number) of the figure.
+    However, if the property "IntegerHandle" has been set to "off" then
+    the property will return an empty matrix ([]).
+
+ ** Patch and surface graphic objects now use the "FaceNormals" property
+    for flat lighting.
+
+ ** "FaceNormals" and "VertexNormals" for patch and surface graphic
+    objects are now calculated only when necessary to improve graphics
+    performance.  In order for any normals to be calculated the
+    "FaceLighting" property must be set to "flat" (FaceNormals) or
+    "gouraud" (VertexNormals), AND a light object must be present in the
+    axes.
+
+ ** The "Margin" property of text() objects has a new default of 3
+    rather than 2.  This change was made for Matlab compatibility.
+
+ ** Printing to raster formats (bitmaps like PNG or JPEG) now uses an
+    OpenGL-based method by default.  The print options "-opengl"
+    (raster) and "-painters" (vector) have been added ("qt" toolkit
+    only).  The figure property "renderer" specifies which renderer to
+    use.  When the property "renderermode" is "auto" Octave will select
+    -opengl for a raster output format and -painters for a vector output
+    format.
+
+ ** A new print option "-RGBImage" has been added which captures the
+    pixels of a figure as an image.  This is similar to screen capture
+    tools, except that print formatting options can be used to, for
+    example, change the resolution or display the image in black and
+    white.
+
+ ** Two new print options for page-based formats (PDF, PostScript) have
+    been added.  The "-fillpage" option will stretch the plot to occupy
+    the entire page with 0.25 inch margins all around.  The "-bestfit"
+    option will expand the plot to take up as much room as possible on
+    the page without distorting the original aspect ratio of the plot.
+
+ ** Printing using the -dtiff output device will now create compressed
+    images using LZW compression.  This change was made for Matlab
+    compatibility.  To produce uncompressed images use the -dtiffn
+    device.
+
+ ** A new printing device is available, -ddumb, which produces ASCII art
+    for plots.  This device is only available with the gnuplot toolkit.
 
-    MODELS
-      logistic_regression
+ ** Printing to EPS files now uses a tight bounding box ("-tight"
+    argument to print) by default.  This makes more sense for EPS
+    files which are normally embedded within other documents, and is
+    Matlab compatible.  If necessary use the "-loose" option to
+    reproduce figures as they appeared in previous versions of Octave.
+
+ ** It is now possible to use files and folders containing Unicode
+    characters in Windows.
+
+ ** The FFTW library is now required to perform FFT calculations.
+    The FFTPACK sources have been removed from Octave.
 
-    TESTS
-      anova
-      bartlett_test
-      chisquare_test_homogeneity
-      chisquare_test_independence
-      cor_test
-      f_test_regression
-      hotelling_test
-      hotelling_test_2
-      kolmogorov_smirnov_test
-      kolmogorov_smirnov_test_2
-      kruskal_wallis_test
-      manova
-      mcnemar_test
-      prop_test_2
-      run_test
-      sign_test
-      t_test
-      t_test_2
-      t_test_regression
-      u_test
-      var_test
-      welch_test
-      wilcoxon_test
-      z_test
-      z_test_2
+ ** The OSMesa library is no longer used.  To print invisible figures
+    when using OpenGL graphics, the Qt QOFFSCREENSURFACE feature must be
+    available and you must use the qt graphics toolkit.
 
- ** The following image functions have been moved from core Octave to
-    the image package available from Octave Forge.
+ ** The str2func function no longer accepts a second "global" argument.
+    This argument was typically used to allow functions that accept
+    function names as arguments to avoid conflicts with subfunctions or
+    nested functions.  Instead, it's best to avoid this situation
+    entirely and require users to pass function handles rather than
+    function names.
 
-      ntsc2rgb
-      rgb2ntsc
+ ** The path handling functions no longer perform variable or brace
+    expansion on path elements and Octave's load-path is no longer
+    subject to these expansions.
 
- ** Other new functions added in 4.4:
+ ** New functions added in 5.0:
 
-      bounds
-      camlookat
-      camorbit
-      campos
-      camroll
-      camtarget
-      camup
-      camva
-      camzoom
-      corrcoef
-      cosint
-      decic
-      erase
-      gammaincinv
-      getframe
-      groot
-      gsvd
-      hgtransform
-      humps
-      integral
-      integral2
-      integral3
-      isgraphics
-      isstring
-      mad
-      ode15i
-      ode15s
-      openvar
-      quad2d
-      repelem
-      rgb2gray
-      rticks
-      sinint
-      tfqmr
-      thetaticks
-      vecnorm
-      winqueryreg
-      xticklabels
-      xticks
-      yticklabels
-      yticks
-      zticklabels
-      zticks
+      clearvars
+      isfile
+      isfolder
+      matlab.lang.makeUniqueStrings
+      matlab.lang.makeValidName
+      movegui
+      movfun
+      movie
+      movmad
+      movmax
+      movmean
+      movmedian
+      movmin
+      movprod
+      movslice
+      movstd
+      movsum
+      movvar
+      openfig
+      ordeig
+      savefig
+      uitable
 
- ** Deprecated functions.
+ ** Legacy functions.
 
-    The following functions have been deprecated in Octave 4.4 and will
-    be removed from Octave 6 (or whatever version is the second major
-    release after 4.4):
+    The following functions have been declared legacy functions which
+    means they are obsolete and should not be used in any new code.
+    Unlike deprecated functions, however, their removal from Octave has
+    not yet been scheduled.
 
       Function             | Replacement
       ---------------------|------------------
-      chop                 | sprintf for visual results
-      desktop              | isguirunning
-      tmpnam               | tempname
-      toascii              | double
-      java2mat             | __java2mat__
-
-
- ** The following functions were deprecated in Octave 4.0 and have been
-    removed from Octave 4.4.
-
-      allow_noninteger_range_as_index
-      bicubic
-      delaunay3
-      do_braindead_shortcircuit_evaluation
-      dump_prefs
-      find_dir_in_path
-      finite
-      fmod
-      fnmatch
-      gmap40
-      loadaudio
-      luinc
-      mouse_wheel_zoom
-      nfields
-      octave_tmp_file_name
-      playaudio
-      saveaudio
-      setaudio
-      syl
-      usage
-
- ** The "Octave:undefined-return-values" warning ID is obsolete.  Octave
-    now throws an error for any attempts to assign undefined values that
-    might be returned from functions.
-
- ** Deprecated graphics properties.
-
-    The following properties or allowed corresponding values have been
-    deprecated in Octave 4.4 and will be removed from Octave 6 (or whatever
-    version is the second major release after 4.4):
-
-      Object               | Property                | Value
-      ---------------------|-------------------------|-------------------
-      figure               | doublebuffer            |
-                           | mincolormap             |
-                           | wvisual                 |
-                           | wvisualmode             |
-                           | xdisplay                |
-                           | xvisual                 |
-                           | xvisualmode             |
-      axes                 | drawmode                |
-      annotation           | edgecolor ("rectangle") |
-      text                 | fontweight              | "demi" and "light"
-      uicontrol            | fontweight              | "demi" and "light"
-      uipanel              | fontweight              | "demi" and "light"
-      uibuttongroup        | fontweight              | "demi" and "light"
-
- ** The rectangle and ellipse annotation property "edgecolor" has been
-    deprecated and will be removed from Octave 6 (or whatever version
-    is the second major release after 4.4).  Use the property "color"
-    instead.
-
- ** The header file oct-alloc.h has been removed along with the macros
-    that it defined (DECLARE_OCTAVE_ALLOCATOR, DEFINE_OCTAVE_ALLOCATOR,
-    and DEFINE_OCTAVE_ALLOCATOR2).
-
-
-Summary of bugs fixed for version 4.2.2 (2018-03-13):
-----------------------------------------------------
-
-Using the bug numbers listed below, find bug reports on the web using
-the URL https://savannah.gnu.org/bugs/?NNNNN
-
- ** make leftdiv work for scalar \ int-matrix (bug #51682)
-
- ** inputdlg.m: Avoid crash when prompt and defaults sizes differ (bug #53209)
-
- ** tie octave_classdef::numel method to "numel" user override method
-    (bug #46571)
-
- ** fix performance of Sparse fsolve for complex sparse matrices (bug #53140)
-
- ** fix performance of Sparse fsolve (bug #53140)
-
- ** octave.desktop.in: No repetition of Name in Comment field and start I10n
-    (bug #53078)
-
- ** don't create partially invalid graphic objects (bug #52904)
-
- ** test for incorrect regexprep on ARM platforms (bug #52810)
-
- ** fix incorrect regexprep on ARM platforms (bug #52810)
-
- ** correctly handle reading of characters >127 in scanf family (bug #52681)
-
- ** fix addpath for UNC paths on Windows (bug #51268)
-
- ** protect being-deleted objects on figure list from second deletion
-    (bug #52666)
-
- ** dlmwrite.m: Close fid if filename is only one char long (bug #52679)
-
- ** set gnuplot color data to half output range when autoscaling zero input
-    range (bug #52624)
-
- ** add polarplot() to the list of unimplemented functions (bug #52643)
-
- ** configure.ac: Fix test for Java version (bug #52617)
-
- ** for gnuplot toolkit, do not map TrueColor data to colormap size (bug #52599)
-
- ** make wheel scroll behave more consistently in pan mode (bug #52588)
-
- ** make gnuplot color have three components for interpolated edge color
-    (bug #52595)
-
- ** simplify gnuplot toolkit scripts for image/non-image data plots (bug #52589)
-
- ** fix concatenation of empty char matrices with other strings (bug #52542)
-
- ** build: Fix compiling OCTAVE_ARPACK_OK_2 Fortran code (bug #52425)
-
- ** trisurf.m, trimesh.m: Fix input validation (bug #48109)
-
- ** allow uncommenting in editor when line begins with whitespace (bug #52406)
-
- ** do not extend selection when indenting/commenting in editor (bug #45610)
-
- ** remove all delimiters from whitespace list in textscan function (bug #52479)
-
- ** calculate 1-norm of matrices to assess whether NaN or Inf are present
-    (bug #39000)
-
- ** prevent extra ampersand under KDE in cd-or-add-to-path dialog (bug #52423)
-
- ** plotyy.m: Fix error when using FUN2 argument (bug #48115)
-
- ** check ARPACK library for buggy behavior in configure (bug #52425)
-
- ** fix printing integer type images (bug #51558)
-
- ** fix segfault in delaunayn when Qhull memory is not properly cleared
-    (bug #52410)
-
- ** fix segfault with CHOLMOD library and empty matrices (bug #52365)
-
- ** tag global and persistent symbols as variables when parsing (bug #52363)
-
- ** properly restore the input stream pointer at end of textscan (bug #52116 et
-    al.)
-
- ** fix building with Qt4 for Windows (bug #52237)
-
- ** ensure numeric values are passed for the axes "clim" property (bug #52053)
-
- ** avoid abort on exit from GUI (bug #50664)
-
- ** correct auto limits on log axes with negative and zero values (bug #51861)
-
- ** fix warning in quadgk with zero size interval (bug #51867)
-
- ** sparse: correctly handle scalar column index (bug #51880)
-
- ** fix segfault in ichol under certain conditions (bug #51736)
-
- ** configure: ensure empty pkg-config results are actually empty (bug #51680)
-
- ** fix 'legend hide' for gnuplot (bug #50483)
-
- ** qqplot.m: Fix typo in input validation (bug #51458)
-
- ** add possible '\r' to smartindent regex exprepression (Bug #51279)
-
- ** make strncmp case sensitive again (bug #51384)
-
- ** fix possible infinite loop in normest1.m (bug #51241)
-
- ** also run unwind protect cleanup code on interrupt exceptions (bug #51209)
-
- ** fix crash when inverting complex matrices with NaNs (bug #51198)
-
- ** improve accuracy of residue for inputs with very different magnitudes
-    (bug #51148)
-
- ** publish.m: Fix corruption of results for some code inputs (bug #51178)
-
- ** residue.m: Remove code that filters out small return values (bug #34266, bug
-    #49291)
-
- ** avoid possible double free at interpreter exit (bug #51088)
-
- ** show stack trace for errors in command line and startup files (bug #49346)
-
- ** interp1.m: Return NA for all columns which are out of bounds (bug #51030)
-
- ** use idx_type for dimensions instead of int (bug #50934)
-
- ** show stack trace for wrong type arg errors (bug #50894)
-
- ** let mouse selection of Qt figures update "currentfigure" (bug #50666)
-
- ** disable qscintilla editor drag and drop so parent will handle it (Bug
-    #50559)
-
- ** quadgk.m: Correct error messages which point to quadv (bug #50604)
-
- ** set version on AppUserModelId (Bug #50428)
-
- ** version-rcfile: Don't try to execute startup directory, only startup.m
-    (bug #50593)
-
- ** dlmread: Return empty matrix when requested range is outside data
-    (bug #50102)
-
- ** fix eigs for generalized nonsymmetric and shift-invert problems (bug #39573)
-
- ** fix eigs for the generalized eigenvalue problem (bug #50546)
-
- ** datetick.m: Fix uneven range bugs (bug #50493)
-
- ** datenum.m: Correct calculation for fractional leap years (bug #50508)
-
- ** datenum.m: Allow horizontal vectors of dates with fractional months
-    (bug #50508)
-
- ** datenum.m: Accept legal input of vectors with fractional months (bug #50508)
-
- ** fix the anchor position in the info text of the doc browser (bug #50422)
-
- ** fix order of legend labels with plotyy axes (bug #50497)
-
- ** correct hggroup plot legends for gnuplot toolkit, add legend demo 17 items
-    (bug #49341)
-
- ** for gnuplot graphics toolkit, show only one key entry for errorbars
-    (bug #49260)
-
- ** fix compilation of jit caused by cset d0562b3159c7 (bug #50398)
-
- ** remove inline keyword on file_stat destructor which breaks MacOS compilation
-    (bug #50234)
-
-Documentation bugs fixed:
-
- ** playblocking.m: Correct documentation about start and limits inputs
-    (bug #51217)
-
- ** fix eig output argument description (bug #50524)
-
- ** remove backslashes before double quotes in m-file docstrings (bug #52870)
-
- ** tweaks to use single quotes instead of double quotes (bug #52870)
-
- ** correct fieldname of returned struct in ver (bug #52845)
-
- ** cleanup @code example in Appendix on test functions (bug #52852)
-
- ** fixes for signal, image, audio, and OOP chapters (bug #52844)
-
- ** fix issues in geometry, polynomial, and interpolation chapters (bug #52835)
-
- ** fix TeX documentation for qp and clarify size of inputs (bug #52829)
-
- ** correct errors in Diagonal matrix chapter of manual (bug #52814)
-
- ** replace @math{1e^{XXX}} sequences with raw 1eXXX (bug #52827)
-
- ** use '...' rather than deprecated '\' for line continuation (bug #52828)
-
- ** make documentation Sec 26.1 more consistent and Sec 25.4 clearer
-    (bug #52685)
-
- ** documentation fixes for linspace, logspace, lookup (bug #52785)
-
- ** atan2d.m: Correct documentation to match atan docstring (bug #52786)
-
- ** small tweaks to fplot and surfnorm docstrings (bug #52761)
-
- ** rewrite documentation for Advanced Indexing (bug #52723)
-
- ** delete extra ']' in scanf docstring (bug #52742)
-
- ** fix mistaken use of space between function and '(' in documentation
-    (bug #52723)
-
- ** fix various inconsistencies in manual (bug #52712)
-
- ** fix typo in cset 8354b505ad6b (bug #52702)
-
- ** fix inconsistencies with char, strvcat, strread docstrings (bug #52702.
-
- ** explain Matlab compatibility of fopen modes (bug #52644)
-
- ** update documentation for keywords to include classdef statements
-    (bug #52591)
-
- ** fix documentation of third input to lsode() (bug #52664)
-
- ** clarify quiver/quiver3 documentation when a linestyle is given (bug #52608)
-
- ** new section about classdef classes with example (bug #44590)
-
- ** correct surface plot explanation of  meshgridded results of 1 input
-    (bug #52536)
-
- ** fix definition of Delaunay triangulation in docstrings (bug #52416)
-
- ** accumarray.m: Add '@' to function handles in docstring (bug #52418)
-
- ** update manual to explain \deg and \circ symbols (bug #52287)
-
- ** correct documentation for randg (bug #52118)
-
- ** add documentation about PCRE library regexp stack overflow (bug #51589)
-
- ** play.m: Correct documentation about start and limits inputs (bug #51217)
-
- ** redo docstring for qz (bug #50846)
-
- ** describe optional install dependencies PortAudio and SUNDIALS (bug #50513)
-
- ** update CITATION date, version, and permalink to manual (bug #47058)
-
-
-Summary of bugs fixed for version 4.2.1 (2017-02-22):
-----------------------------------------------------
-
-Using the bug numbers listed below, find bug reports on the web using
-the URL https://savannah.gnu.org/bugs/?NNNNN
-
- ** guarantee returning std::string from tilde_expand functions (bug #50234)
-
- ** workaround segfault in file_stat (bug #50234)
-
- ** genpropdoc.m: document more graphics properties (bug #50337)
-
- ** always fork and exec when starting the gui (bug #49609)
-
- ** print.m: fix regression with -append option (bug #50318)
-
- ** don't display legend, colorbar, and annotation axes coordinates
-    (bug #50272)
-
- ** qp.m: Fix regression with incorrect vector dimensions (bug #50067)
-
- ** prevent infinite loop in global documentation search (bug #50177)
-
- ** connect execute command signal in editor constructor (bug #50171)
-
- ** connect editors execute command signal to the required slot (bug #50171)
-
- ** check if input is class method before declaring it unimplemented
-    (patch #9238) (bug #49694)
-
- ** workaround segfault when an error occurs while printing (bug #49779)
-
- ** axis.m: Do not set plotboxaspectratio to 0 (bug #49755)
-
- ** don't rethrow exception in destructor (bug #49304)
-
- ** rethrow octave::exit_exception (bug #49304)
-
- ** update appdata.xml to follow conventions (bug #49952)
-
- ** mexproto.h (mxAssert, mxAssertS): ensure operator precedence (bug #50050)
-
- ** calculate error in solution for ode solvers correctly (bug #49950)
-
- ** use GetModuleFileName for getting octave path in windows (bug #48671)
-
- ** use C++ updaters for labels color (bug #49980)
-
- ** distinguish elements vs. bytes in fread (bug #49699)
-
- ** move frame2im and im2frame to image/ directory (bug #49939)
-
- ** fix undefined return argument for more than 2 outputs from ode solver
-    (bug #49890)
-
- ** fix inv for hermitian matrices (bug #49904)
-
- ** fix gzip for certain types of gzip files (bug #49760)
-
- ** fix typo in liboctave version info (bug #49860)
-
- ** initialize ODE Event function with start time (bug #49846)
-
- ** allow configure test to succeed without implicit fcn decls (bug #49782)
-
- ** allow external docstrings from .oct files to be found again (bug #49687)
-
- ** don't require semicolon between property list elements (bug #49819)
-
- ** display.m: Correctly display output for non-class objects
-    (bug #49753, #49794)
-
- ** don't run publish.tst unless OSMESA or gnuplot are available (bug #49767)
-
- ** find help for function aliases again (bug #49687)
-
- ** legend.m: backport cset 7184b4516a68 (bug #49675)
-
- ** preserve lasterror info on rethrow (bug #49642)
-
- ** norm: fix error in input argument validation leading to segfault
-    (bug #49634)
-
-Documentation bugs fixed:
-
- ** overhaul Java interface description (bug #50299)
-
- ** add documentation for hex and binary prefix and _ separator
-    (bug #50305, #50334)
-
- ** fix build of docs broken in sub2ind (bug #50348)
-
- ** version.m: document that "-release" returns an empty string (bug #50294)
-
- ** remove trailing "\n\" from sleep and usleep docstrings (bug #50301)
-
- ** expand documentation for cast() (bug #50201)
-
- ** correct two entries in Table 34.1 (bug #50203)
-
- ** oop.txi: Improve table formatting (bug #50203)
-
- ** fix '##' in middle of docstring/comment lines (bug #50145)
-
- ** reword documentation about subplots in 15.2.4 (bug #50148)
-
- ** update unimplemented list of functions and where to find them
-    (bug #50098)
-
- ** compare_plot_demos: fix HTML syntax, simplify output, remove
-    external deps (bug #49709)
-
- ** add more depth to explanation of '~' function argument (bug #49444)
-
- ** correct documentation for javaclasspath file (bug #49873)
-
- ** small fixes to docstrings (bug #49733)
-
- ** change text describing demo plots to reflect new ColorOrder (bug #49288)
-
-Other bugs fixed:
-
- ** add missing classdef test files (bug #49819)
-
-
-Summary of important user-visible changes for version 4.2 (2016-11-13):
-----------------------------------------------------------------------
-
- ** The parser has been extended to accept, but ignore, underscore
-    characters in numbers.  This facilitates writing more legible code
-    by using '_' as a thousands separator or to group nibbles into bytes
-    in hex constants.
-
-    Examples: 1_000_000 == 1e6  or  0xDE_AD_BE_EF
-
- ** The parser has been extended to understand binary numbers which
-    begin with the prefix '0b' or '0B'.  The value returned is Octave's
-    default numeric class of double, not at unsigned integer class.
-    Therefore numbers greater than flintmax, i.e., 2^53, will lose some
-    precision.
-
-    Examples: 0b101 == 5  or  0B1100_0001 == 0xC1
-
- ** gnuplot 4.4 is now the minimum version supported by Octave.
-
- ** The default set of colors used to plot lines has been updated to be
-    compatible with Matlab's new default color scheme.  The line plot
-    color scheme can be set with the axes property "ColorOrder".
-
- ** The default colormap is now set to "viridis" which is also the
-    default colormap in matplotlib.  This new colormap fixes some of the
-    main issues with the old default colormap "jet" such as its bad
-    "luminance profile" and is also more similar to Matlab's new default
-    colormap "parula".
-
- ** The colormap function no longer supports the input argument "list"
-    to show built-in colormaps.  Use "help colormap" to find the
-    built-in colormaps.
-
- ** The graphics command "hold on" now ensures that each new plot added
-    to an existing plot has a different color or linestyle according to
-    the "ColorOrder" and/or "LineStyleOrder" properties.  This is
-    equivalent to the old command "hold all" and was made for Matlab
-    compatibility.  Existing code *may* produce differently colored
-    plots if it did not specify the color for a plot and relied on each
-    new plot having the default first color in the "ColorOrder"
-    property.
-
- ** When starting, Octave now looks in the function path for a file
-    startup.m and executes any commands found there.  This change was
-    made to accommodate Matlab users.  Octave has it's own configuration
-    system based on the file .octaverc which is preferred.
-
- ** Octal ('\NNN') and hex ('\xNN') escape sequences in single quoted
-    strings are now interpreted by the function do_string_escapes().
-    The *printf family of functions now supports octal and hex escape
-    sequences in single-quoted strings for Matlab compatibility.
-
- ** Special octal and hex escape sequences for the pattern and
-    replacement strings in regular expressions are now interpreted for
-    Matlab compatibility.
-
-    octal: '\oNNN' or '\o{NNN}'
-    hex  : '\xNN'  or '\x{NN}'
-
- ** Unknown escape sequences in the replacement string for regexprep are
-    now substituted with their unescaped version and no warning is
-    emitted.  This change was made for Matlab compatibility.
-
-    Example: regexprep ('a', 'a', 'x\yz')
-             => 'xyz'
-
- ** mkfifo now interprets the MODE argument as an octal, not decimal,
-    integer.  This is consistent with the equivalent shell command.
-
- ** linspace now returns an empty matrix if the number of requested
-    points is 0 or a negative number.  This change was made to be
-    compatible with Matlab releases newer than 2011.  In addition,
-    Octave no longer supports matrix inputs for A or B.
-
- ** The cov function now returns the complex conjugate of the result
-    from previous versions of Octave.  This change was made for
-    compatibility with Matlab.
-
- ** condest now works with a normest1 compatible syntax.
-
- ** The griddata function no longer plots the interpolated mesh if no
-    output argument is requested, instead the vector or array of
-    interpolated values is always returned for Matlab compatibility.
-
- ** The new function "light" and the corresponding graphics object
-    provide light and shadow effects for patch and surface objects.
-
- ** The surfnorm function now returns unnormalized (magnitude != 1)
-    normal vectors for compatibility with Matlab.
-
- ** The normal vectors returned from isonormals have been reversed to
-    point towards smaller values for compatibility with Matlab.
-
- ** The quadl function now uses an absolute, rather than relative,
-    tolerance for Matlab compatibility.  The default tolerance is 1e-6
-    which may result in lower precision results than previous versions
-    of Octave which used eps as the relative tolerance.  The quadl
-    function has also been extended to return a second output with the
-    total number of function evaluations.
-
- ** The textscan function is now built-in and is much faster and much
-    more Matlab-compatible than the previous m-file version.
-
- ** Dialog boxes--errordlg, helpdlg, inputdlg, listdlg, msgbox,
-    questdlg, and warndlg--now exclusively use Qt for rendering.
-    Java based versions have been removed.
-
- ** The axes properties "TitleFontSizeMultiplier" and "TitleFontWeight"
-    are now implemented which control the default appearance of text
-    created with title().
-    The axes property "LabelFontSizeMultiplier" is now implemented
-    which controls the default appearance of text created with
-    xlabel(), ylabel(), or zlabel().
-
- ** The graphics property "box" for axes now defaults to "off".
-    To obtain equivalent plots to previous versions of Octave use
-      set (0, "DefaultAxesBox", "on");
-    in your .octaverc file.
-
- ** The graphics property "boxstyle" has been implemented.  The default
-    is "back" which draws only the back planes in a 3-D view.  If the
-    option is "full" then all planes are drawn.
-
- ** The graphics property "erasemode" has been hidden, and will
-    eventually be removed.  This property has also been removed
-    from Matlab, and was never implemented in Octave.
-
- ** The graphics property "graphicssmoothing" for figures now controls
-    whether anti-aliasing will be used for lines.  The default is "on".
-
- ** The value "zero" for the axes properties "xaxislocation" and
-    "yaxislocation" has been deprecated and will be removed from
-    Octave 5.  Use "origin" instead.
-
- ** The publish function allows easy publication of Octave script files
-    in HTML or other formats, including figures and output created by
-    this script.  It comes with its counterpart grabcode, which lets one
-    literally grab the HTML published code from a remote website, for
-    example.
-
- ** The value of the MEX variable TrapFlag now defaults to 0, which will
-    cause Octave to abort execution of a MEX file and return to the
-    prompt if an error is encountered in mexCallMATLAB.
-
- ** The MEX API now includes the function mexCallMATLABWithTrap.  This
-    function will not abort if an error occurs during mexCallMATLAB, but
-    instead will return execution to the MEX function for error
-    handling.
-
- ** The MEX API functions for input validation that begin with "mxIs"
-    (e.g., mxIsDouble, mxIsEmpty, etc.) now return type bool rather than
-    type int.
-
- ** The functions mxAssert and mxAssertS for checking assertions have
-    been added.  In order to avoid a performance penalty they are only
-    compiled in to debug versions of a MEX file, i.e., that are produced
-    when the '-g' option is given to mex or mkoctfile.
-
- ** Other new MEX API functions include mexEvalStringWithTrap,
-    mxIsScalar, mxCreateUninitNumericArray, mxCreateUninitNumericMatrix.
-
- ** Other new functions added in 4.2:
-
-      audioformats
-      camlight
-      condeig
-      deg2rad
-      dialog
-      evalc
-      hash
-      im2double
-      isocaps
-      lighting
-      localfunctions
-      material
-      normest1
-      ode23
-      ode45
-      odeget
-      odeplot
-      odeset
-      padecoef
-      profexport
-      psi
-      rad2deg
-      reducepatch
-      reducevolume
-      smooth3
-      uibuttongroup
+      findstr              | strfind
+      flipdim              | flip
+      isdir                | isfolder or dir_in_loadpath
+      isequalwithequalnans | isequaln
+      isstr                | ischar
+      setstr               | char
+      strmatch             | strncmp or strcmp
+      strread              | textscan
+      textread             | textscan
 
  ** Deprecated functions.
 
-    The following functions have been deprecated in Octave 4.2 and will
-    be removed from Octave 5 (or whatever version is the second major
-    release after 4.2):
+    The following functions have been deprecated in Octave 5.0 and will
+    be removed from Octave 7 (or whatever version is the second major
+    release after 5.0):
+
+      Function             | Replacement
+      ---------------------|------------------
+                           |
+
+ ** The following functions were deprecated in Octave 4.2 and have been
+    removed from Octave 5.0.
 
       Function             | Replacement
       ---------------------|------------------
@@ -970,381 +254,39 @@
       wavread              | audioread
       wavwrite             | audiowrite
 
- ** The following functions were deprecated in Octave 3.8 and have been
-    removed from Octave 4.2.
-
-      default_save_options    java_new
-      gen_doc_cache           java_unsigned_conversion
-      interp1q                javafields
-      isequalwithequalnans    javamethods
-      java_convert_matrix     re_read_readline_init_file
-      java_debug              read_readline_init_file
-      java_invoke             saving_history
-
- ** The global error_state variable in Octave's C++ API has been
-    deprecated and will be removed in a future version.  Now the error
-    and print_usage functions throw an exception
-    (octave::execution_exception) after displaying the error message.
-    This makes the error and print_usage functions in C++ work more like
-    the corresponding functions in the scripting language.
-
- ** The default error handlers in liboctave have been updated to use
-    exceptions.  After displaying an error message they no longer return
-    control to the calling program.  The error handler function can be
-    customized through the global variables
-    "current_liboctave_error_handler" and
-    "current_liboctave_error_with_id_handler".  If a programmer has
-    installed their own custom error handling routines when directly
-    linking with liboctave then these must be updated to throw an
-    exception and not return to the calling program.
-
- ** The system for common errors and warnings has been renamed from
-    gripe_XXX to either err_XXX if error is called or warn_XXX if
-    warning is called.  The gripe_XXX functions are deprecated and will
-    be removed in version 5.
-
- ** New configure option, --enable-address-sanitizer-flags, to build
-    Octave with memory allocator checks (similar to those in valgrind)
-    built in.
-
-Summary of important user-visible changes for version 4.0 (2015-05-23):
-----------------------------------------------------------------------
+ ** Deprecated graphics properties.
 
- ** A graphical user interface is now the default when running Octave
-    interactively.  The start-up option --no-gui will run the familiar
-    command line interface, and still allows use of the GUI dialogs and
-    qt plotting toolkit.  The option --no-gui-libs runs a minimalist
-    command line interface that does not link with the Qt libraries and
-    uses the fltk toolkit for plotting.
-
- ** Octave now uses OpenGL graphics with Qt widgets by default.  If
-    OpenGL libraries are not available when Octave is built, gnuplot is
-    used.  You may choose to use the fltk or gnuplot toolkit for
-    graphics by executing the command
-
-      graphics_toolkit ("fltk")
-        OR
-      graphics_toolkit ("gnuplot")
-
-    Adding such a command to your ~/.octaverc file will set the default
-    for each session.
-
- ** A new syntax for object oriented programming termed classdef has
-    been introduced.  See the manual for more extensive documentation of
-    the classdef interface.
-
-    New keywords:
-
-      classdef      endclassdef
-      enumeration   endenumeration
-      events        endevents
-      methods       endmethods
-      properties    endproperties
-
- ** New audio functions and classes:
-
-      audiodevinfo  audioread      sound
-      audioinfo     audiorecorder  soundsc
-      audioplayer   audiowrite
-
- ** Other new classes in Octave 4.0:
-
-      audioplayer    inputParser
-      audiorecorder
-
- ** Optional stricter Matlab compatibility for ranges, diagonal
-    matrices, and permutation matrices.
-
-    Octave has internal optimizations which use space-efficient storage
-    for the three data types above.  Three new functions have been added
-    which control whether the optimizations are used (default), or
-    whether the data types are stored as full matrices.
-
-    disable_range   disable_diagonal_matrix   disable_permutation_matrix
+    The following properties or allowed corresponding values have been
+    deprecated in Octave 5.0 and will be removed from Octave 7 (or
+    whatever version is the second major release after 5.0):
 
-    All three optimizations are disabled if Octave is started with the
-    --braindead command line option.
-
- ** The preference
-
-      do_braindead_shortcircuit_evaluation
-
-    is now enabled by default.
-
- ** The preference
-
-      allow_noninteger_range_as_index
-
-    is now enabled by default and the warning ID
-
-      Octave:noninteger-range-as-index
-
-    is now set to "on" by default instead of "error" by default and "on"
-    for --traditional.
-
- ** The "backtrace" warning option is now enabled by default.  This
-    change was made for Matlab compatibility.
-
- ** For compatibility with Matlab, the "ismatrix (x)" function now only
-    checks the dimension of "x".  The old behavior of "ismatrix" is
-    obtained by "isnumeric (x) || islogical (x) || ischar (x)".
-
- ** The nextpow2 function behavior has been changed for vector inputs.
-    Instead of computing `nextpow2 (length (x))', it will now compute
-    nextpow2 for each element of the input.  This change is Matlab
-    compatible, and also prevents bugs for "vectors" of length 1.
-
- ** polyeig now returns a row vector of eigenvalues rather than a matrix
-    with the eigenvalues on the diagonal.  This change was made for
-    Matlab compatibility.
-
- ** Interpolation function changes for Matlab compatibility
-
-    The interpolation method 'cubic' is now equivalent to 'pchip' for
-    interp1, interp2, and interp3.  Previously, 'cubic' was equivalent
-    to 'spline' for interp2.  This may produce different results as
-    'spline' has continuous 1st and 2nd derivatives while 'pchip' only
-    has a continuous 1st derivative.  The methods 'next' and 'previous'
-    have been added to interp1 for compatibility.
-
- ** The delaunay function has been extended to accept 3-D inputs for
-    Matlab compatibility.  The delaunay function no longer plots the
-    triangulation if no output argument is requested, instead, the
-    triangulation is always returned.  The delaunay3 function which
-    handles 3-D inputs has been deprecated in favor of delaunay.
-
- ** The trigonometric functions asin and acos return different phase
-    values from previous versions of Octave when the input is outside
-    the principal branch ([-1, 1]).  If the real portion of the input is
-    greater than 1 then the limit from below is taken.  If the real
-    portion is less than 1 then the limit from above is taken.  This
-    criteria is consistent with several other numerical analysis
-    software packages.
-
- ** The hyperbolic function acosh now returns values with a phase in the
-    range [-pi/2, +pi/2].  Previously Octave returned values in the
-    range [0, pi].  This is consistent with several other numerical
-    analysis software packages.
-
- ** strfind changes when using empty pattern ("") for Matlab
-    compatibility
-
-    strfind now returns an empty array when the pattern itself is empty.
-    In previous versions of Octave, strfind matched at every character
-    location when the pattern was empty.
-
-      NEW
-      strfind ("abc", "") => []
-      OLD
-      strfind ("abc", "") => [1, 2, 3, 4]
-
- ** Integer formats used in the printf family of functions now work for
-    64-bit integers and are more compatible with Matlab when printing
-    non-integer values.  Now instead of truncating, Octave will switch
-    the effective format to '%g' in the following circumstances:
-
-      * the value of an integer type (int8, uint32, etc.) value exceeds
-        the maximum for the format specifier.  For '%d', the limit is
-        intmax ('int64') and for '%u' it is intmax ('uint64').
-
-      * round(x) != x or the value is outside the range allowed by the
-        integer format specifier.
-
-    There is still one difference: Matlab switches to '%e' and Octave
-    switches to '%g'.
-
- ** The functions intersect, setdiff, setxor, and union now return a
-    column vector as output unless the input was a row vector.  This
-    change was made for Matlab compatibility.
+      Object               | Property                | Value
+      ---------------------|-------------------------|-------------------
+      text                 | fontangle               | "oblique"
+      uibuttongroup        | fontangle               | "oblique"
+      uicontrol            | fontangle               | "oblique"
+      uipanel              | fontangle               | "oblique"
+      uitable              | fontangle               | "oblique"
 
- ** The inpolygon function now returns true for points that are within
-    the polygon OR on it's edge.  This change was made for Matlab
-    compatibility.
-
- ** The archive family of functions (bzip2, gzip, zip, tar) and their
-    unpacking routines (bunzip2, gunzip, unzip, untar, unpack) have been
-    recoded.  Excepting unpack, the default is now to place files in the
-    same directory as the archive (on unpack) or as the original files
-    (on archiving).
-
- ** Qt and FLTK graphics toolkits now support offscreen rendering on
-    Linux.  In other words, print will work even when the figure
-    visibility is "off".
-
- ** Z-order stacking issues with patches, grid lines, and line object
-    plot markers for on screen display and printing have all been
-    resolved.  For 2-D plots the axis grid lines can be placed on top of
-    the plot with set (gca, "layer", "top").
-
- ** The patch graphic object has been overhauled.  It now produces
-    visual results equivalent to Matlab even for esoteric combinations
-    of faces/vertices/cdata.
-
- ** The polar() plot function now draws a circular theta axis and radial
-    rho axis rather than using a rectangular x/y axis.
-
- ** linkprop has been completely re-coded for performance and Matlab
-    compatibility.  It now returns a linkprop object which must be
-    stored in a variable for as long as the graphic objects should
-    remain linked.  To unlink properties use 'clear hlink' where hlink
-    is the variable containing the linkprop object.
-
- ** isprime has been extended to operate on negative and complex inputs.
-
- ** xor has been extended to accept more than two arguments in which
-    case it performs cumulative XOR reduction.
-
- ** The following functions now support N-dimensional arrays:
-
-      fliplr   flipud   rot90   rectint
-
- ** The new warning ID "Octave:data-file-in-path" replaces the three
-    previous separate warning IDs "Octave:fopen-file-in-path",
-    "Octave:load-file-in-path", and "Octave:md5sum-file-in-path".
-
- ** The warning ID Octave:singular-matrix-div has been replaced by
-    Octave:nearly-singular-matrix and Octave:singular-matrix.
-
- ** The warning ID Octave:matlab-incompatible has been replaced by
-    Octave:language-extension to better reflect its meaning.
-
- ** The warning ID Octave:broadcast has been removed.  Instead automatic
-    broadcasting will throw an Octave:language-extension warning.  This
-    warning ID is used for broadcasting as well as other features not
-    available in Matlab.
-
- ** Other new functions added in 4.0:
-
-      annotation
-      bandwidth
-      cubehelix
-      dir_in_loadpath
-      flip
-      frame2im
-      get_home_directory
-      hgload
-      hgsave
-      ichol
-      ilu
-      im2frame
-      isbanded
-      isdiag
-      isstudent
-      istril
-      istriu
-      javachk
-      jit_failcnt
-      linkaxes
-      lscov
-      metaclass
-      numfields
-      open
-      ordschur
-      pan
-      qmr
-      rotate
-      rotate3d
-      sylvester
-      unsetenv
-      validateattributes
-      zoom
-
- ** inline() scheduled for eventual deprecation by Matlab
+ ** The following properties or allowed corresponding values were
+    deprecated in Octave 4.2 and have been removed from Octave 5.0:
 
-    Functions created through the use of inline are scheduled for
-    deprecation by Matlab.  When this occurs Octave will continue to
-    support inline functions for an indeterminate amount of time before
-    also removing support.  All new code should use anonymous functions
-    in place of inline functions.
-
- ** Deprecated functions.
-
-    The following functions have been deprecated in Octave 4.0 and will
-    be removed from Octave 4.4 (or whatever version is the second major
-    release after 4.0):
-
-      Function             | Replacement
-      ---------------------|------------------
-      bicubic              | interp2
-      delaunay3            | delaunay
-      dump_prefs           | individual preference get/set routines
-      find_dir_in_path     | dir_in_loadpath
-      finite               | isfinite
-      fmod                 | rem
-      fnmatch              | glob or regexp
-      gmap40               | ----
-      loadaudio            | audioread
-      luinc                | ilu or ichol
-      mouse_wheel_zoom     | mousewheelzoom axes property
-      nfields              | numfields
-      octave_tmp_file_name | tempname
-      playaudio            | audioplayer
-      saveaudio            | audiowrite
-      syl                  | sylvester
-      usage                | print_usage
-
-      allow_noninteger_range_as_index
-      do_braindead_shortcircuit_evaluation
-      setaudio
-
- ** The following functions were deprecated in Octave 3.8 and will be
-    removed from Octave 4.2 (or whatever version is the second major
-    release after 3.8):
+      Object               | Property                | Value
+      ---------------------|-------------------------|-------------------
+      axes                 | xaxislocation           | "zero"
+                           | yaxislocation           | "zero"
+      hggroup              | erasemode               |
+      image                | erasemode               |
+      line                 | erasemode               |
+      patch                | erasemode               |
+      patch                | normalmode              |
+      surface              | erasemode               |
+      surface              | normalmode              |
+      text                 | erasemode               |
 
-      default_save_options    java_new
-      gen_doc_cache           java_unsigned_conversion
-      interp1q                javafields
-      isequalwithequalnans    javamethods
-      java_convert_matrix     re_read_readline_init_file
-      java_debug              read_readline_init_file
-      java_invoke             saving_history
-
- ** The following functions were deprecated in Octave 3.6 and have been
-    removed from Octave 4.0.
-
-      cut                polyderiv
-      cor                shell_cmd
-      corrcoef           studentize
-      __error_text__     sylvester_matrix
-      error_text
-
- ** The following keywords were deprecated in Octave 3.8 and have been
-    removed from Octave 4.0
-
-      static
-
- ** The following configuration variables were deprecated in Octave 3.8
-    and have been removed from Octave 4.0
-
-      CC_VERSION  (now GCC_VERSION)
-      CXX_VERSION (now GXX_VERSION)
-
- ** The internal function atan2 of the sparse matrix class has been
-    deprecated in Octave 4.0 and will be removed from Octave 4.4 (or
-    whatever version is the second major release after 4.0).  Use the
-    Fatan2 function with sparse inputs as a replacement.
-
- ** The internal class Octave_map was deprecated in Octave 3.8 and has
-    been removed from Octave 4.0.  Replacement classes are octave_map
-    (struct array) or octave_scalar_map for a single structure.
-
- ** Octave now has OpenMP enabled by default if the system provides a
-    working OpenMP implementation.  This allows oct-file modules to take
-    advantage of OpenMP if desired.  This can be disabled when building
-    Octave with the configure option --disable-openmp.
-
- ** Octave now automatically truncates intermediate calculations done
-    with floating point values to 64 bits.  Some hardware math
-    co-processors, such as the x87, maintain extra precision, but this
-    leads to disagreements in calculations when compared to reference
-    implementations in software using the IEEE standard for double
-    precision.  There was no measurable performance impact to this
-    change, but it may be disabled with the configure option
-    --disable-float-truncate.  MinGW and Cygwin platforms, as well as
-    GCC compilers >= 5.0 require this feature.  Non-x87 hardware, or
-    hardware using SSE options exclusively, can disable float truncation
-    if desired.
+ ** The C++ function is_keyword has been deprecated in favor of
+    iskeyword.  The old function will be removed two versions after 5.0.
 
 ---------------------------------------------------------
 
-See NEWS.3 for old news.
+See NEWS.4 for old news.