`replace_text` fails every time with `Could not parse ToUnicodeCMap: Error!`

[axoking]

The replace_text function of the Document struct is not working.

Example code:

use lopdf::Document;

fn main() {
    let mut doc = Document::load("document.pdf").unwrap();

    if let Err(error) = doc.replace_text(1, "Hello World", "Goodbye world") {
        println!("{error}");
    }

    doc.save("modified.pdf").unwrap();
}

Gives the following output:

ToUnicode CMap error: Could not parse ToUnicodeCMap: Error!

Happens even with a simple PDF document created by libre office (see below): document.pdf document.odt

[cuviper]

This is not directly using indexmap -- perhaps you meant to file an issue on lopdf? https://github.com/J-F-Liu/lopdf