Non-printing characters support

[mrunderline]

we are using weasyprint(53.0) to generate persian pdf and have problem with thin-space (or half-space).
here is some examples:
this one taken in webview mode:

and this one is after generating a pdf with weasyprint:

as you can see, the pdf result has some some problem with thin-space. I also try to change my font to solve this problem, but nothing happen. would you please help me to solve this problem?

[liZe]

would you please help me to solve this problem?

I think that the problem is caused by alignment, not by the thin-space character. Could you please share an HTML+CSS sample that causes the problem?

[mrunderline]

css:

h2 {
  border: 1px solid #ccc;
  padding: 3mm;
}

html:

<h2>کارشناسی ارشد ناپیوسته</h2>
<h2>کارشناسی‌ارشد ناپیوسته</h2>

result:

[liZe]

Oh, you’re right, there’s a problem because of this space. Let’s find what!

[liZe]

The culprit character is not a thin space, it’s a zero-width non-joiner. This character is a non-printing character, and there’s a bug with these characters in WeasyPrint.

[liZe]

Thanks a lot for this bug report! It’s now fixed and tested.

[mrunderline]

thanks a lot, i'm so eager for new version! 🤘🏻