UTF8 (by Anton Ivanov)

[glejeune]

I seem to have a problem with utf-8 labels. The following renders fine: a [label="ε"]; however when I pass {:label=>'ε'} to add_node, the output has
[label="\316\265"] which renders as a decimal value.

[Gromina]

same issue for me
add_node encodes utf8 labels to a mess

if I use add_edge with utf8 node names without any labels and without creating nodes all works great

[glejeune]

I made a correction (see sample38.rb).

Thanks for testing.

[vanboom]

See my issue #115 and PR #151. Encoding issues occur when labels include UTF8 text and Graphviz is producing a text file (SVG). Open3.capture3 when run in binmode=true returns ASCII-8BIT result. Binmode needs to be disabled when requesting a text based output format.