Change Details

**Steps to replicate the issue** (include links if applicable): * Feeding decomposed text into the Scribunto functions mw.ustring.upper or mw.ustring.lower now results in a composed (i.e. form NFC) output. For instance, decomposed `a` + acute fed into `mw.ustring.upper` now returns the atomic character `Á` instead of `A` + acute **What happens?**: * This causes major breakage on English Wiktionary for modules relying on these functions for text manipulation - e.g. Ancient Greek transliteraton now fails 60/62 tests (https://en.wiktionary.org/wiki/Module:grc-translit). **What should have happened instead?**: * They should revert back to the old behaviour ASAP. **Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):

**Steps to replicate the issue** (include links if applicable): * Feeding decomposed text into the Scribunto functions mw.ustring.upper or mw.ustring.lower now results in a composed (i.e. form NFC) output. For instance, decomposed `a` + acute fed into `mw.ustring.upper` now returns the atomic character `Á` instead of `A` + acute **What happens?**: * This causes major breakage on English Wiktionary for modules relying on these functions for text manipulation - e.g. Ancient Greek transliteraton now fails 60/62 tests (https://en.wiktionary.org/wiki/Module:grc-translit). **What should have happened instead?**: * Module:grc-translit should return properly transliterated text. **Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):

**Steps to replicate the issue** (include links if applicable): * Feeding decomposed text into the Scribunto functions mw.ustring.upper or mw.ustring.lower now results in a composed (i.e. form NFC) output. For instance, decomposed `a` + acute fed into `mw.ustring.upper` now returns the atomic character `Á` instead of `A` + acute **What happens?**: * This causes major breakage on English Wiktionary for modules relying on these functions for text manipulation - e.g. Ancient Greek transliteraton now fails 60/62 tests (https://en.wiktionary.org/wiki/Module:grc-translit). **What should have happened instead?**: * They* Module:grc-translit should revert back to the old behaviour ASAPturn properly transliterated text. **Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):