Eduardo Gómez d0cec7ae2e Fix inconsistent display width for emoji outside East Asian Wide ranges (#4896) ... * Widen display_width_of() to cover Emoji_Presentation code points fmt::detail::display_width_of() only treated East Asian Wide/Fullwidth code points and two hand-picked emoji ranges as two columns wide, so emoji outside those ranges (e.g. the Dingbats block: cross mark U+274C, white heavy check mark U+2705) were measured as one column even though most terminals render them double-width. This produced visibly inconsistent padding under {:^N} compared to CJK text (fixes #4851). Replaced the ad hoc boolean expression with a sorted table of ranges (East Asian Wide/Fullwidth plus the full Emoji_Presentation set from Unicode's emoji-data.txt) looked up via binary search, and added regression tests covering the original report plus edge cases: multiple emoji, mixed emoji/CJK/ASCII content, precision truncation, alignment/fill variants, newly covered emoji ranges, and regional indicator (flag) pairs. * Make wide_cp_ranges C++11-compatible; apply clang-format * Move wide_cp_range struct into display_width_of() * Derive wide_cp_ranges from East_Asian_Width data, restore constexpr * Move wide_cp_ranges to display_width_of function body * Update format.h * Update wide_cp_ranges array to include comments * Add inline to display_width_of and add 1F300-1F5FF and 1F900-1F9FF ranges to match [format.string.std] * Update display_width_of lo hi varible declaration --------- Co-authored-by: Eduardo Gomez Saldias <50159560+edugomez102@users.noreply.github.com>		2026-08-30 08:05:50 -07:00
..
fmt	Fix inconsistent display width for emoji outside East Asian Wide ranges (#4896)	2026-08-30 08:05:50 -07:00