Font error with 2.5 and Adobe Acrobat

[Skulli]

Since 2.5 i get an error with documents including the €-character and using a custom font.

Ruby-Code is

pdf.font_families.update(
  name.capitalize => {
      normal: Rails.root.join("vendor/assets/fonts", name, "#{name.capitalize}-Regular.ttf"),
      bold: Rails.root.join("vendor/assets/fonts", name, "#{name.capitalize}-Bold.ttf"),
      italic: Rails.root.join("vendor/assets/fonts", name, "#{name.capitalize}-Italic.ttf"),
      bold_italic: Rails.root.join("vendor/assets/fonts", name, "#{name.capitalize}-BoldItalic.ttf")
  }
)
pdf.font name.capitalize

with name = 'arimo'

With < 2.5 it looks like that

and with 2.5

error means that the font could not be obtained and sone characters may not be visible.

ssets/218423/02024c30-0456-4c37-8e8d-28b2d87d1f59)

In Adobe Acrobat the € is missing. Chrome/Safari/Mac OS Viewer dont show any errors.

Surely related to #1322

Any ideas?

[spovich]

We are seeing the same issue with prawn 2.5 PDF's when viewed in Acrobat (2024.001.20643). Some characters randomly disappear. PDF looks fine in Mac OS PDF preview.

[tonymarklove]

For cross reference, I added some comments to this old issue a few weeks back, about the same problem: #1206 (comment)

It has a small, reproducible example.

[hoshy]

We have the same problem since updating to prawn 2.5.0 and ttfunk 1.8.0.
Rolling back to prawn 2.4.0 and ttfunk 1.7.0 solved it for us.

[ashkulz]

The issue is the upgrade to ttfunk 1.8.0, see prawnpdf/ttfunk#102

Also a duplicate of #1346 but might be worth it to keep open...

[lm-itou]

Using Japanese font, I could see the same error on Acrobat Reader. (No problem with any other PDF viewers)

Cannot extract the embedded font '9279db+IPAexMincho'. Some characters may not display or print correctly.

The code to generate the PDF which can not be shown on Acrobat Reader:

#!/usr/bin/env ruby

require "prawn"

pdf = Prawn::Document.new

# the font file can be downloaded from https://moji.or.jp/ipafont/ipafontdownload/
ipamp_spec  = { file: "ipaexm.ttf", font: 'IPAPMincho'}
pdf.font_families.update("ipamp" => {normal: ipamp_spec,
                                    bold: ipamp_spec,
                                    italic: ipamp_spec,
                                    bold_italic: ipamp_spec})
pdf.font("ipamp")

pdf.text_box("日本語でOK?")

File.open("test.pdf", "w") do |file|
  pdf.render(file)
end

puts "Generated test.pdf with prawn #{Prawn::VERSION}"

I have tested with prawn 2.5.0 and 2.4.0. The results are same.
Same as above comments, prawn 2.4.0 and ttfunk 1.7.0 don't have the problem.

[bary822]

prawnpdf/ttfunk#106 was merged. I confirmed the problem is fixed now in my app.