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Copy caveats from RELEASE-NOTES to UPGRADING
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UPGRADING
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UPGRADING
@ -3,18 +3,24 @@ How do I upgrade my existing LyX system to version 2.3.x?
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* Upgrading from LyX 2.2.x:
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* Upgrading from LyX 2.2.x:
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The format of preference and session files has changed. LyX 2.3.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 external_templates file has been split into one file per template,
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The external_templates file has been split into one file per template,
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which are now located in lib/xtemplates/*.xtemplate. This makes it easier
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which are now located in lib/xtemplates/*.xtemplate. This makes it easier
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to add new templates or modify existing ones. If you have modified
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to add new templates or modify existing ones. If you have modified
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the external_templates file, you will have to move the modifications to
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the external_templates file, you will have to move the modifications to
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the respective *.xtemplate file manually.
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the respective *.xtemplate file manually.
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By default, LyX 2.3 forces output of all en and em dashes as -- and ---
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when exporting to LaTeX. This can lead to incorrect line breaks, wrong
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characters in typewriter fonts, and problems with some LaTeX packages.
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Unselect "Document->Settings->Fonts->Output em- and en-dash as ligatures"
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to keep the LyX 2.2 behaviour and avoid these problems. See chapter 3.9.1.1
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"Dashes and line breaks" of the User Guide for details.
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ZWSP characters (u200b) following literal em- and en-dashes are deleted by
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lyx2lyx when converting to 2.3 format. If you used them as optional line
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breaks after dashes, convert them to space insets before opening your
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document with LyX 2.3 or the optional line breaks will be lost!
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If using TeX fonts and en- and em-dashes are output as font ligatures,
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If using TeX fonts and en- and em-dashes are output as font ligatures,
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when exporting documents containing en- and em-dashes to the format of
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when exporting documents containing en- and em-dashes to the format of
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LyX 2.0 or earlier, the following line has to be manually added to the
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LyX 2.0 or earlier, the following line has to be manually added to the
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@ -31,6 +37,13 @@ option in the LyX preferences;
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2) provides explicit consent to the use of the converter on the first
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2) provides explicit consent to the use of the converter on the first
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compilation of the R-enhanced document.
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compilation of the R-enhanced document.
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LyX now gives a warning if a document mixes title and non-title layouts.
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In some cases, this warning is harmless, but in other cases the document has
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a serious problem even though the LaTeX command does not exit with error. For
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example, create a document with a title layout, then a standard layout, and
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then an author layout, and you will see in the PDF that the author is not
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typeset as an author.
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* Upgrading from LyX 2.1.x:
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* Upgrading from LyX 2.1.x:
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The format of preference and session files has changed. LyX 2.2.x is able to
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The format of preference and session files has changed. LyX 2.2.x is able to
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