Save the range of the text of the corresponding cluster in a glyph

[LaurenzV]

Okay, so I've brought this up before in #100, but at that point I didn't really know myself what exactly I need, but now I do, so I wanted to bring it up again as a feature request. 😄 When writing text in PDF, I need to provide a cmap for each glyph, which maps each glyph to a (or multiple) corresponding codepoints.

So my question is: Is it feasible to extend the 'Glyph' definition so that it stores a range which points to the byte indices of the original string that correspond to the original cluster the glyph stems from?

[DJMcNab]

I think this was discussed in #110. Should this issue be closed?

[LaurenzV]

Oh yeah, I’ve managed to get something to work, it’s not ideal but it works.