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Copy caveats from RELEASE-NOTES to UPGRADING
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UPGRADING
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UPGRADING
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How do I upgrade my existing LyX system to version 2.1.x?
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How do I upgrade my existing LyX system to version 2.2.x?
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---------------------------------------------------------
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---------------------------------------------------------
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* Upgrading from LyX 2.1.x:
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With LuaTeX, LyX now uses polyglossia instead of babel if the language
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package option "Automatic" is selected. In order to use babel, select
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"Always babel" instead.
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The format of preference and session files has changed. LyX 2.2.x is able to
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read old files but will save them in the new format.
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The format of layout files has changed but, as before, layout2layout.py will
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convert older versions to the new format automatically.
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The prefix for subsections in labels and references has been changed from
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"sub:" to "subsec:" in order to avoid a clash with subfloats (conflicting
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\subref command, see bug #7550). Files are automatically converted to the new
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scheme. Please assure that you adapt external refstyle or prettyref definitions
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and your own layout files.
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BibTeX errors are now processed and cause LyX to show the errors dialog.
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Before, these errors were ignored, which means that it may happen that
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documents that compiled without error with a previous version now
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compile with error. However, because now in 2.2.x users can click on
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the "Show Output Anyway" button, the document can still be viewed.
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Missing characters in the output are now reported as errors. This leads
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to error reports for documents that compiled without error before.
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However, the error was always present but went undetected!
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Documents using Times fonts and containing Greek characters may now fail
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to compile under pdflatex for users of MikTeX due to an automatically
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half-installed "grtimes" package. A workaround in LyX was removed as it
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stands in the way of alternative approaches (see bug #6469).
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With LuaTeX, LyX now uses polyglossia instead of babel if the language
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package option "Automatic" is selected. In order to use babel, select
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"Always babel" instead. This may be needed if a document uses code that
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is specific to babel.
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* Upgrading from LyX 2.0.x:
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* Upgrading from LyX 2.0.x:
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Python version >=2.4 is now required.
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Python version >=2.4 is now required.
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