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<p>Hello Darren,<br>
<br>
This is a common problem. It is caused by incomplete (not
well-formed) fonts, and the only good solution is, unfortunately,
to choose another font or edit the existing one.</p>
<p>Please take a look at this post at StackOverflow for the deeper
insight on what's going on. <a class="moz-txt-link-freetext" href="https://stackoverflow.com/a/45469424/">https://stackoverflow.com/a/45469424/</a></p>
<p>If the font does contain necessary glyphs in PUA (Private Use
Area), RenderX XEP is able to find the "1st floor" substitutes for
canonical glyphs.<br>
If not, XEP falls back to using canonical glyphs which end up
drawn on the "2nd floor", overlap, and visually appear too high
above the consonant.<br>
In this case, you have no other choice but to find another font or
to finalize the development of the existing one by adding the
missing glyphs.<br>
</p>
<p>From the practical experience, we find Arial Unicode and
AngsanaUPC (both distributed with Windows) as well as FreeSerif
incomplete.<br>
</p>
<p>On the other hand, Laksaman, Norasi, Loma, and AngsanaUPC found
elsewhere on the Web are proven to work well.<br>
However, keep in mind to check the licenses when you download it
from the Web sites around the Internet and use it in your
projects.<br>
</p>
<pre class="moz-signature" cols="72">Best regards,
Vladyslav Sivyakov, RenderX.</pre>
<div class="moz-cite-prefix">On 21.02.2024 03:48, Darren Munt wrote:<br>
</div>
<blockquote type="cite"
cite="mid:SYZPR01MB74651B6DA39331C42461FE1B86572@SYZPR01MB7465.ausprd01.prod.outlook.com">
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<p class="MsoNormal">We’ve had an issue reported by a Thai
customer. Apparently the diacritics above some of the
characters are superimposed when there are multiple marks. I
don’t pretend to understand the language at all but I guess
the sample they sent doesn’t look right. So is this something
I am doing wrong, or a limitation we’re not aware of? See
example below where you can see in the top selection of text
there is a second diacritic above some of the characters, and
in the PDF screenshot, those second marks are overlayed.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img style="width:7.1458in;height:5.3125in"
id="Picture_x0020_1"
src="cid:part1.NRRh74Hn.GnWk8D71@renderx.com" class=""
width="686" height="510"><o:p></o:p></p>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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