[Dev-luatex] And now for something completely different...

David Kastrup dak at gnu.org
Tue Aug 23 16:42:33 CEST 2016

root at ntg.nl (Cron Daemon) writes:

> ------------------------------------------------------------------------
> r6103 | luigi | 2016-08-23 12:39:29 +0200 (Tue, 23 Aug 2016) | 1 line
> Changed paths:
>    A /tags/0.98.3/source/libs/cairo
>    A /tags/0.98.3/source/libs/cairo/ChangeLog
>    A /tags/0.98.3/source/libs/cairo/Makefile.am
>    A /tags/0.98.3/source/libs/cairo/Makefile.in
>    A /tags/0.98.3/source/libs/cairo/README
>    A /tags/0.98.3/source/libs/cairo/ac
>    A /tags/0.98.3/source/libs/cairo/ac/cairo.ac
>    A /tags/0.98.3/source/libs/cairo/ac/withenable.ac
>    A /tags/0.98.3/source/libs/cairo/aclocal.m4
>    A /tags/0.98.3/source/libs/cairo/cairo
>    A /tags/0.98.3/source/libs/cairo/cairo/Makefile.am
>    A /tags/0.98.3/source/libs/cairo/cairo/Makefile.in
>    A /tags/0.98.3/source/libs/cairo/cairo-PATCHES
>    A /tags/0.98.3/source/libs/cairo/cairo-PATCHES/ChangeLog
>    A /tags/0.98.3/source/libs/cairo/cairo-PATCHES/TL-Changes
>    A /tags/0.98.3/source/libs/cairo/cairo-features.h.in
>    A /tags/0.98.3/source/libs/cairo/cairo-src

Does LuaTeX use Cairo for PDF generation in any manner?  Or is that just
included for separate use from Lua?

The reason I ask is that Cairo does not particularly suited to
generating actual PDF _Documents_ (replete with Metadata, TOC,
crossreferences and other stuff) rather than just graphics to be
embedded elsewhere.

If you _do_ generate whole PDF _documents_ with it, the manner in which
you do could be interesting for LilyPond as well which currently runs
almost all of its output through Ghostscript for processing (including
generating PDF and PNG) at considerable impact on performance and
various problems with font inclusion/subsetting.

Thanks for any insight you can provide here!

David Kastrup

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