With the approach implemented by Simon what gets written to the IF file is the original sequence, not the mapped sequence. Then when generating PDF from IF the same code that would generate the synthesized mappings when generating PDF straight from FO is called to recreate the mappings. So I don't think we can say there is information about the mappings in the text nodes.

On 4/23/13 5:50 AM, Glenn Adams wrote:
Ah, I reread your earlier (private) message. I see the problem has to do with the use of synthesized PUA mappings. Here, the problem really is that the font should always have a CMAP entry that maps to every glyph that can be produced by the GSUB process. However, not all fonts do this, so in the case in point, we have to synthesize some mapping, from which we have to turn to PUA assignments. This works when we generate PDF since we generate a subset font that contains the synthesized mappings. However, I can see that if this is going to IF instead of PDF/PS, then we need to find a way to recreate those synthesized mappings.

I think this information is really font-specific, and should not be tied to specific text nodes though. So if Simon's fix uses text nodes, then that is probably not the best approach.

On Mon, Apr 22, 2013 at 10:45 PM, Glenn Adams <gl...@skynav.com <mailto:gl...@skynav.com>> wrote:

    I'm presently at W3C WG meetings this week, but I'll try to get on
    my schedule. I'm not sure what the IF->PS/PDF problem is, since
    the IF->PDF path is clearly working from my tests.

    On Mon, Apr 22, 2013 at 4:27 PM, Luis Bernardo
    <lmpmberna...@gmail.com <mailto:lmpmberna...@gmail.com>> wrote:


        Can you give your opinion about the approach used by Simon? As
        I mentioned before (in a private message), the IF -> PS/PDF
        route does not work in your original CS patch (for the
        languages that CS targets) due to the mapped sequences.
        Simon's approach works but requires keeping the original
        sequences alongside the mapped ones. I think it is a good
        approach but I would like to know if you have a better
        suggestion before we apply the patch.


        On 4/22/13 3:23 PM, Chris Bowditch (JIRA) wrote:


            Chris Bowditch reassigned FOP-2210:

                 Assignee: Chris Bowditch

                [PATCH] Complex script IF to output missing glyphs

                                 Key: FOP-2210
                             Project: Fop
                          Issue Type: Bug
                            Reporter: simon steiner
                            Assignee: Chris Bowditch
                         Attachments: csspeedtrunk.patch, fop.xconf,
                test.fo <http://test.fo>

                fop test.fo <http://test.fo> -c fop.xconf -if
                application/pdf expected.if.xml
                fop -c fop.xconf -ifin expected.if.xml out.pdf

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