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From Jan Tošovský (JIRA) <j...@apache.org>
Subject [jira] [Commented] (FOP-2371) Kerning is applied only to certain combinations
Date Sun, 11 May 2014 18:11:14 GMT

    [ https://issues.apache.org/jira/browse/FOP-2371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13994631#comment-13994631
] 

Jan Tošovský commented on FOP-2371:
-----------------------------------

I use default fop settings (with <auto-detect/> tag) so complex script features should
be enabled. Kern pairs are present in the font and it works fine in e.g. XEP or ConTeXt (luaTeX).
This led me to the conclusion it is just FOP issue.

The peculiarity of this font is the lack of glyph names. Various font libraries builds these
missing names using a different logic which can be demonstrated on dotlessi glyph used for
small caped variant of 'i' character. While some engines renders it corectly as dotless i,
others incorrectly as dotted i. 

If missing glyph names is the issue, I am curious why the kerning is not disabled completely.
Now it works at least for the AV pair.

> Kerning is applied only to certain combinations
> -----------------------------------------------
>
>                 Key: FOP-2371
>                 URL: https://issues.apache.org/jira/browse/FOP-2371
>             Project: Fop
>          Issue Type: Bug
>          Components: fonts
>    Affects Versions: 1.1
>         Environment: Win 64-bit, JRE 1.7.0_40
>            Reporter: Jan Tošovský
>            Priority: Minor
>              Labels: kerning
>         Attachments: kern.fo, kern.pdf
>
>
> When VLTAVA is typed with Palatino Linotype font, the kerning is applied to AV combination
only. The rest, i.e. LT, TA and VA, is typeset without kerning.



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