There are at least two plugins, generating EPS output in slightly wrong way.
- gnuplot — uses ‘set term postscript eps’. Better use epscairo, which has no
problem with unicode. Fortunally it’s easy to workaround, since ‘set term’
command is part of gnuplot language.
Graphviz case is harder, because there’s no other way to set output driver,
than in command line option. Default -Teps uses internal gd driver, which is
also better be switched to cairo (eps:gd clearly prints warning if detects
non-ascii characters in input).
Also need check for -Tsvg:cairo too, because at least in emacs
graphviz-dot-mode using simple -Tsvg (with default gd driver) produces svg
output, where text ‘#000000’ or ‘black’ are removed, leaving it invisible
(default text color) — requires to use something like ‘#010101’. I checked svg
standard — and could not find a word about default unspecified color value.
Which probably means, it’s implementation-dependent if not should be
transparent.
--
Nikita Zlobin
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