text-autospace treats <rt> text as main text flow
Live repro
These samples force text-autospace: normal. Ruby annotation text
in <rt> should not participate in main-line autospace boundary
detection. Compare the live rendered row with the expected reference row.
Bug 1 unwanted spacing
Live rendered<rt> is Latin
漢字
Expectedcaptured from patched content_shell
Expected main-line comparison: 漢 vs 字.
Bug 2 missing spacing
Live rendered<rt> is kana
漢abc
Expectedcaptured from patched content_shell
Expected main-line comparison: 漢 vs a.
Repro source
<style>
.case { text-autospace: normal; font-size: 56px; }
</style>
<div class="case"><ruby>漢<rt>kan</rt></ruby>字</div>
<div class="case"><ruby>漢<rt>かん</rt></ruby>abc</div>Expected behavior
Ruby annotations are out of the main text flow
Autospace should use adjacent main-line characters only. It should ignore
<rt> annotation text when deciding ideograph-alpha spacing.
In the first case no spacing should be inserted between two ideographs. In the second case spacing should be inserted between the ideograph and the following Latin text.