Correctly embed fonts in generated pdf

[albertored]

With this change the eps generated as a middle step to have pdf files as output are generated with the -teps:text flag on plantuml. See https://plantuml.com/eps for reference.

In this way text is not rendered as outlines in eps file but it keeps the font indication allowing epstopdf to correctly embed font in the final pdf

[yuja]

Thanks!

[yuja]

Instead of adding separate fileformat, plantuml_type parameters, maybe eps:text can be mapped to <filename>.text.eps (i.e. 'text.eps': ['-teps:text'])?

Suppose -teps and -teps:text generate different contents, the output filenames should be unique.

[yuja]

Oh, but it might break batch rendering where the output file names are controlled by plantuml.

If -teps:text doesn't break existing users, maybe it's okay to always use -teps:text.

[albertored]

Should this be an option available on config? Like plantuml_latex_output_format = "eps:text"

[albertored]

If -teps:text doesn't break existing users, maybe it's okay to always use -teps:text.

Depends on the definition of "breaking". For sure it can lead to a different output

[yuja]

Yeah, that seems good if we need to support both eps formats.

If eps:text is strictly better in latex rendering, I think it's good to use it by default. eps format wouldn't be used for the other purposes.

[albertored]

In alternative I can add a new option, something like plantuml_latex_pdf_embed_fonts = True (default to False as today) that if given uses -teps:text instead of -teps

[yuja]

I have no preference over adding option vs changing the default. If we add an option, it will be something like plantuml_eps_embed_fonts so that all <hash>.eps files of the same name are rendered with the same configuration.