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[~suv <1306846@xxxxxxxxxxxxxxxxxx>]

@Adrian - the commit broke the quartz backend (and based on comments on
irc the gl backend too):

  CC       cairo-quartz-surface.lo
cairo-quartz-surface.c:2265:12: error: too few arguments to function call, expected 5, have 4
                         content);
                                ^
./cairoint.h:1335:1: note: '_cairo_surface_init' declared here
cairo_private void
^
./cairo-compiler-private.h:133:27: note: expanded from macro 'cairo_private'
#define cairo_private       cairo_private_no_warn cairo_warn
                            ^
./cairo-compiler-private.h:120:31: note: expanded from macro 'cairo_private_no_warn'
#define cairo_private_no_warn   __attribute__((__visibility__("hidden")))
                                ^
1 error generated.
make[3]: *** [cairo-quartz-surface.lo] Error 1

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https://bugs.launchpad.net/bugs/1306846

Title:
  Inkscape (using cairo) fails to print thin lines to PDF

Status in libcairo:
  Fix Released
Status in cairo package in Ubuntu:
  Triaged

Bug description:
  Since 1.12.3, cairo cannot render fine lines to pdf. 1.12.2 was the
  last version that worked.

  http://cgit.freedesktop.org/cair/diff/?id=bdf83008f4b2c723fd8e65e2a92bc47a2e7bc442

  introduced code to avoid lines that would be invisible when
  rasterized. While this is a valid logic for raster backends, it is a
  bad idea for PDF output. There we want to see all fine lines.

  My specific use case is generating a lasercutter drawing for an Epilog
  Zing laser with inkscape. There the hardware would raster anything
  thicker than 0.02mm, and cut 0.01mm or below. 1.12.3 skips lines below
  0.036mm, 1.13.1 skips lines below 0.018mm -- which is still not enough
  to safely drive my lasercutter.

  Previously reported against inkscape:
  https://bugs.launchpad.net/inkscape/+bug/1174909

  Also reported agains cairo upstream with a suggested fix: https://bugs.freedesktop.org/show_bug.cgi?id=77298
  Check out the attached reproducer and fix.

  I'd suggest to circulate patched ubuntu packages, until upstream
  releases an official fix.

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