Re: Preliminary patch for preserving clip path lists - bug 686885

Raph,

Attaching a patch for writing high level paths to PDF.
It has 2 problems :

1. pdfwrite with 012-05.ps pdf_put_clip_path_list_elem recieves a path with
no segments. This causes a regression with this and many other files.

2. See the log message in the patch about an useful optimization.

An additional question :
Is the recursive pdf_put_clip_path_list_elem fine, or it should convert to
an iteration with a local modification of pointers ? I know that streams do
so, but I don't like. It should be const. Do you think to add

struct gx_cpath_path_list_s {
    ...
    gx_cpath_path_list *prev;
};

? Not sure that 'prev' is fine with local/global.

Igor.

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