hether the composition has no text decoration inside it</h3>
<p>In <a href="https://drafts.csswg.org/css-writing-modes/#text-combine-layout">Section 9.1.2 Layout Rules</a> it says:
<blockquote>
When combining text as for text-combine-upright: all, the glyphs of the combined text are composed horizontally (<mark>ignoring letter-spacing and any forced line breaks, but using the specified font settings</mark>), similar to the contents of an inline-box with a horizontal writing mode and a line-height of 1em.
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