Contact emailsko...@chromium.org, lin...@chromium.org ExplainerNone
Specificationhttps://drafts.csswg.org/css-text-4/#text-spacing-trim-property Design docs https://docs.google.com/document/d/146Bupkg3nrNALL3bm8UElRd0vsLVH5807xubsnrthDw/edit?usp=sharing Summary Applies the kerning to CJK punctuation characters to produce the visually pleasing typography as defined by JLREQ (Requirements for Japanese Text Layout) and CLREQ (Requirements for Chinese Text Layout). Many CJK punctuation characters include glyph-internal spacing. For example, the CJK full stop and the CJK close parenthesis usually have glyph-internal spacings on the right half of their glyph spaces, to give them a constant advance as other ideographic characters. But when they appear in a row, the glyph-internal spacings become excessive. This feature adjusts such excessive spacing. This feature adjusts the glyph-internal spacing for 1) adjacent characters (pair kerning), 2) at the line start, and 3) at the line end, by using the font data. Blink componentBlink>Layout>Inline <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ELayout%3EInline> TAG reviewhttps://github.com/w3ctag/design-reviews/issues/907 TAG review statusNot applicable Risks Interoperability and Compatibility None *Gecko*: Positive (https://github.com/mozilla/standards-positions/issues/903 ) *WebKit*: Positive (https://github.com/w3c/csswg-drafts/issues/4246) A flag is available in Safari Technology Preview. *Web developers*: Positive ( https://twitter.com/fontplus/status/1405020633600233479) This tweet about a web font provider in Japan providing this feature in fonts got 485 likes as of Aug 2023. *Other signals*: Parts of the feature is shipping in Android 13, ChromeOS 90, iOS 17, MS Word 6.0, and LibreOffice. WebView application risks Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications? None Debuggability None Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?Yes Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ?Yes https://wpt.fyi/results/css/css-text?label=experimental&label=master&aligned&q=text-spacing-trim Flag name on chrome://flagsNone Finch feature nameNone Non-finch justificationNone Requires code in //chrome?False Tracking bughttps://bugs.chromium.org/p/chromium/issues/detail?id=1463891 Sample links https://output.jsbin.com/figixaq Estimated milestones Shipping on desktop 123 Shipping on Android 123 Shipping on WebView 123 Anticipated spec changes Open questions about a feature may be a source of future web compat or interop issues. Please list open issues (e.g. links to known github issues in the project for the feature specification) whose resolution may introduce web compat/interop risk (e.g., changing to naming or structure of the API in a non-backward-compatible way). None Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5170044014690304 Links to previous Intent discussionsIntent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAHe_1dKP6u%2BXJ5Vi9aH_AVHJiFPoUM7BhSTYX-oRTPxz87c5XQ%40mail.gmail.com This intent message was generated by Chrome Platform Status <https://chromestatus.com/>. -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAHe_1dLUB%3D%3Dt8Qp102HDPUQiuM1qAG_da3bb44mG22FAVP%3Dk6A%40mail.gmail.com.
