<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body> Hi everybody! Because of a programming error in the new cairo backend for lilypond we occasionally generated insane hyperlink rect definitions. One example is: <blockquote> cairo_tag_begin (context, CAIRO_TAG_LINK, attr.c_str ()); cairo_tag_end (context, CAIRO_TAG_LINK); </blockquote> with attr set to <blockquote> rect=[ inf -inf 0.000000 -0.000000 ] uri='<a href="textedit:/home/knut/sources/lilybuilt/cairotests/teil3.ly:136:10:10">textedit:///foo/bar.ly:136:10:10'</a> </blockquote> Obviously using infinity and 0.0000 here is nonsense. But it is interesting to note differences in cairo error detection between builds for different platforms: A build for linux x86-64 accepted attribute strings with "inf" and "-inf" without problems and without ever generating a context or surface error. A mingw crossbuild tested on a Windows 10 system also never produced a context or surface error immediately after cairo_tag_begin() or cairo_tag_end(). But after cairo_surface_finish() a context error 'invalid tag name, attributes, or nesting' was detected. I really don't know if cairo should silently ignore such a request to generate a link or if it should produce an error status != success. But at least I would have expected that such a condition is handled identically on different platforms. I used cairo git 6872490e77fb2d0cc7d7bb for both builds. Knut </body> </html>