-How do I upgrade my existing LyX system to version 1.1.5?
+How do I upgrade my existing LyX system to version 1.4.x?
---------------------------------------------------------
-If you upgrade from version 0.12.0 or 1.0.x, you shouldn't have
-any problems. However, in the source we have begun a transition
-to use ANSI C++ more and this can make it hard or impossible to
-compile LyX on old or non-conformant compilers. If the compile is
-successfull everything should be just like in 1.0.4. Just run
-"make install", and it will automatically update the necessary
-files, provided that you install LyX the same place as
-an existing version.
+The format of the preferences file has changed slightly. LyX 1.4.x is
+able to read old preferences files, but it will save them in the new
+format, so it is not possible to run LyX 1.3.x and 1.4.x with the same
+personal configuration directory.
+
+The format of the layout files has also changed, but LyX 1.4.x uses a
+converter layout2layout.py written in python that will convert old layout
+files on the fly. You can also call it manually on your layout files if
+you want to convert them to 1.4.x format permanently.
+
+The format of the external template file has changed substantially.
+Automatic conversion is not available, so you need to convert your
+external templates manually. The new format of the external template
+configuration file is described in chapter 6.5 of the Customization Guide.
+
+And of course, if you upgrade from LyX 1.2.x, remember that since
+1.3.0, you have to do the following changes:
+
+One of the perennial bug bears of LyX users in the past has been that
+they have had to run Edit->Reconfigure when starting their new version
+of the code for the first time. Strange and wonderful things would
+often result if they forgot to do this, so LyX 1.3.0 now runs
+Edit->Reconfigure automatically the first time the program is run.
+
+If you have your own layout files, you may need to update them a little:
+
+- floats are now defined in the layout file, using the "Float"..."End"
+ construct. In most cases, adding "Input stdfloats.inc" to your layout
+ file is enough.
+
+- counters are also defined in the layout files, using the
+ "Counter"..."End" construct. As for floats, adding "Input
+ stdfloats.inc" is probably a good idea.
+
+And of course, if you upgrade from LyX 1.1.x, remember that since
+1.2.0, you have to do the following changes:
+
+- all layout files should have a "DefaultStyle" entry
+
+- the "Latex" font style does not exist anymore. If you really need
+ its functionality, consider using the "PassThru" keyword instead.
+
+The new layout format keywords are described in the Customization
+manual.
+
+If you have your own binding files (especially math.bind), you will
+have to update them
+
+- math-insert now takes a latex macro name as argument, so that
+ "math-insert sqrt" should now be "\math-insert \sqrt"
+
+- math-greek-toggle is now gone, and should be replaced by explicit
+ bindings like
+
+ \bind "M-m g a" "math-insert \alpha"
+
+
+Build requirements
+------------------
+
+LyX's graphics handling system has changed substantially. If you
+do not have the JPEG library installed, you may need to install
+it before you can use the graphics capabilities of LyX. If you
+do not have the ImageMagick command-line tools installed, you
+will need to modify the default set up of LyX, or install them,
+in order to get previews of your document's graphics.
Document transfer
-----------------
-In general, you don't need to convert any documents saved with LyX
-v0.10, v0.12.0 or v1.0.x to use them with LyX v1.1.5.
+LyX 1.4.x uses an external python script, lyx2lyx, to import documents
+written using previous versions of LyX. All versions of LyX as far back as
+0.12 are supported, so any klyx users still holding out for an alternative
+to xforms will finally be able to put their dinosaur to rest ;-)
+
+Of course, this means that you must have python (at least version 1.5.2)
+installed in order to use LyX 1.4.x with your old documents.
-LyX v1.1.5 can read all documents saved with lyx-0.12.0 and later correctly.
-Documents saved with lyx-0.10.x are read correctly up to the old math
-mode, which is not supported anymore. If you have documents with such
-math formulas, you convert it using the program COLD, written by Preben
-Rhandol. COLD can be found at:
+lyx2lyx also has the framework in place to be able to convert documents
+to an earlier format. However, these converters have only been written
+for the conversion from 1.4.x to 1.3.x, so versions of LyX older than
+1.3.0 will NOT be able to read documents saved with LyX 1.4.x.
+The conversion from 1.4.x to 1.3.x is lossless as long as no new features
+are used. lyx2lyx tries hard to find something equivalent for new
+features such as boxes, but this is known to fail sometimes.
+LyX 1.3.7 contains an updated lyx2lyx that can read documents in 1.4.x
+format. LyX 1.4.x can also export to 1.3.x format for document transfer to
+older 1.3.x releases.
- http://www.pvv.org/~randhol/lyx/COLD/
- ftp://ftp.lyx.org/pub/lyx/contrib/
+If you were previously (in LyX 1.1.x) using the floatflt paragraph
+option to wrap text around a figure, it was necessary to modify this
+for LyX 1.2.0 manually, as described in the manuals. The feature has
+been re-implemented as "Floting figure" inset in 1.3.0. Old files will
+be converted automatically, but you may want to convert the
+1.2.x-style ERT constructs with the native solution (see section 3.8
+of the Extended Features manual).
-or at one of LyX archive mirror sites listed in README.
+Since LyX 1.2.0, the babel package is loaded after the user-defined
+preamble (because some packages really need to be loaded before
+babel). If you relied, on babel being loaded before your own
+definitions, you can add an extra "\usepackage{babel}" statement at
+the beginning of your preamble.
-Documents saved with LyX version 1.1.5 can be read correctly by
-LyX v0.12.0 and v1.0.x, except for new and a couple of changed features.
+http://bugzilla.lyx.org/show_bug.cgi?id=315
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