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https://issues.apache.org/jira/browse/FOP-1969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14085182#comment-14085182
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Gaja Sutra commented on FOP-1969:
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(In reply to comment #3)
> > request to fix this to support surrogate pairs characters.
I'm interested too, by this feature.
> thanks for your request; could you provide additional information:
> 1. what specific non-BMP characters you would like to use?
Alchemical Symbols, by example: 1F701 -> 1F704
> 2. what specific fonts will you use for these characters?
Symbola font by example.
http://users.teilar.gr/~g1951d/
Thanks,
Gaja.
> Surrogate pairs not treated as single unicode codepoint for display purposes
> ----------------------------------------------------------------------------
>
> Key: FOP-1969
> URL: https://issues.apache.org/jira/browse/FOP-1969
> Project: Fop
> Issue Type: Improvement
> Components: unqualified
> Affects Versions: trunk
> Environment: Operating System: All
> Platform: All
> Reporter: Glenn Adams
> Assignee: Glenn Adams
> Attachments: testing.fo, testing.fo, testing.pdf, testing.pdf,
> testing.xml, testing.xsl
>
>
> unicode codepoints outside of the BMP (base multilingual plane), i.e., whose
> scalar value is greater than 0xFFFF (65535), are coded as UTF-16 surrogate
> pairs in Java strings, which pair should be treated as a single codepoint for
> the purpose of mapping to a glyph in a font (that supports extra-BMP
> mappings);
> at present, FOP does not correctly handle this case in simple (non complex
> script) rendering paths;
> furthermore, though some support has been added to handle this in the complex
> script rendering path, it has not yet been tested, so is not necessarily
> working there either;
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