fix: use exact Emoji_Presentation=Yes code points from Unicode 16.0

Replace blanket ranges (U+2300-23FF, U+25A0-25FF, U+2600-27BF, U+2B00-2BFF)
with precise Emoji_Presentation=Yes code points from emoji-data.txt.

Text-presentation characters (☀♻✈▶◀▪▫ etc.) are now correctly width 1
as single runes, becoming width 2 only with VS16 as multi-codepoint clusters.

Added missing: U+25FD-25FE (◽◾), U+270A-270B (✊✋).
Removed false positives: U+23ED-23EF, U+23F1-23F2, U+23F8-23FA.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: StevenTCramer

kanban/in-progress/016-fix-emoji-alignment-issue-in-table-borders.md

@@ -26,12 +26,21 @@ Added `UnicodeWidth` utility class that calculates terminal display width accoun
 
 ### Wide character ranges covered (width 2)
 
-**Emoji and symbols:**
-- U+2300-U+23FF — Miscellaneous Technical (⌚⌛⏰⏳)
-- U+25A0-U+25FF — Geometric Shapes (▶◀▪▫)
-- U+2600-U+26FF — Miscellaneous Symbols (☀☁⚡♻)
-- U+2700-U+27BF — Dingbats (✅❌✂✈)
-- U+2B00-U+2BFF — Miscellaneous Symbols and Arrows (⬛⬜⭐⭕)
+**Emoji_Presentation=Yes (BMP, from Unicode 16.0 emoji-data.txt):**
+- U+231A-231B ⌚⌛, U+23E9-23EC ⏩⏪⏫⏬, U+23F0 ⏰, U+23F3 ⏳
+- U+25FD-25FE ◽◾
+- U+2614-2615 ☔☕, U+2648-2653 ♈-♓, U+267F ♿, U+2693 ⚓, U+26A1 ⚡
+- U+26AA-26AB ⚪⚫, U+26BD-26BE ⚽⚾, U+26C4-26C5 ⛄⛅, U+26CE ⛎
+- U+26D4 ⛔, U+26EA ⛪, U+26F2-26F3 ⛲⛳, U+26F5 ⛵, U+26FA ⛺, U+26FD ⛽
+- U+2705 ✅, U+270A-270B ✊✋, U+2728 ✨, U+274C ❌, U+274E ❎
+- U+2753-2755 ❓❔❕, U+2757 ❗, U+2795-2797 ➕➖➗, U+27B0 ➰, U+27BF ➿
+- U+2B1B-2B1C ⬛⬜, U+2B50 ⭐, U+2B55 ⭕
+
+**Text-presentation characters (☀♻✈▶◀▪▫ etc.)** are width 1 as single
+runes. They become width 2 when combined with VS16 (U+FE0F) as
+multi-codepoint grapheme clusters, handled automatically by GetTextWidth.
+
+**Emoji blocks (SMP):**
 - U+1F000-U+1FAFF, U+1FC00-U+1FFFF — Emoji blocks
 - U+1F1E0-U+1F1FF — Regional indicator symbols (flags)
 

samples/emoji-table-widget.cs

@@ -18,58 +18,37 @@
     .Border(BorderStyle.Rounded))
   .WriteLine();
 
-// ── Miscellaneous Symbols U+2600-U+26FF and Dingbats U+2700-U+27BF ──
+// ── Emoji_Presentation=Yes (width 2 without VS16) ──
 terminal
-  .WriteRule("Misc Symbols + Dingbats")
+  .WriteRule("Default Emoji Presentation")
   .WriteTable(t => t
     .AddColumn("Symbol")
     .AddColumn("Name")
     .AddColumn("Range")
-    .AddRow("☀ Sun", "U+2600", "Misc Symbols")
     .AddRow("⚡ Zap", "U+26A1", "Misc Symbols")
-    .AddRow("♻ Recycle", "U+267B", "Misc Symbols")
     .AddRow("✅ Check", "U+2705", "Dingbats")
     .AddRow("❌ Cross", "U+274C", "Dingbats")
-    .AddRow("✈ Plane", "U+2708", "Dingbats")
+    .AddRow("⭐ Star", "U+2B50", "Misc Sym+Arrows")
+    .AddRow("⬛ Black", "U+2B1B", "Misc Sym+Arrows")
+    .AddRow("☔ Rain", "U+2614", "Misc Symbols")
+    .AddRow("⌚ Watch", "U+231A", "Misc Technical")
+    .AddRow("⏰ Alarm", "U+23F0", "Misc Technical")
+    .AddRow("➕ Plus", "U+2795", "Dingbats")
+    .AddRow("❗ Exclaim", "U+2757", "Dingbats")
     .Border(BorderStyle.Rounded))
   .WriteLine();
 
-// ── Miscellaneous Technical U+2300-U+23FF ──
+// ── Text presentation + VS16 (width 2 only with ️) ──
 terminal
-  .WriteRule("Misc Technical")
+  .WriteRule("Text Presentation + VS16")
   .WriteTable(t => t
-    .AddColumn("Symbol")
-    .AddColumn("Name")
-    .AddRow("⌚ Watch", "U+231A")
-    .AddRow("⌛ Hourglass", "U+231B")
-    .AddRow("⏰ Alarm", "U+23F0")
-    .AddRow("⏳ Timer", "U+23F3")
-    .Border(BorderStyle.Rounded))
-  .WriteLine();
-
-// ── Geometric Shapes U+25A0-U+25FF ──
-terminal
-  .WriteRule("Geometric Shapes")
-  .WriteTable(t => t
-    .AddColumn("Symbol")
-    .AddColumn("Name")
-    .AddRow("▶ Play", "U+25B6")
-    .AddRow("◀ Reverse", "U+25C0")
-    .AddRow("▪ Small Square", "U+25AA")
-    .AddRow("▫ White Square", "U+25AB")
-    .Border(BorderStyle.Rounded))
-  .WriteLine();
-
-// ── Misc Symbols and Arrows U+2B00-U+2BFF ──
-terminal
-  .WriteRule("Misc Symbols and Arrows")
-  .WriteTable(t => t
-    .AddColumn("Symbol")
+    .AddColumn("With VS16")
     .AddColumn("Name")
-    .AddRow("⬛ Black Square", "U+2B1B")
-    .AddRow("⬜ White Square", "U+2B1C")
-    .AddRow("⭐ Star", "U+2B50")
-    .AddRow("⭕ Circle", "U+2B55")
+    .AddRow("☀️ Sun", "U+2600 + U+FE0F")
+    .AddRow("♻️ Recycle", "U+267B + U+FE0F")
+    .AddRow("✈️ Plane", "U+2708 + U+FE0F")
+    .AddRow("▶️ Play", "U+25B6 + U+FE0F")
+    .AddRow("☁️ Cloud", "U+2601 + U+FE0F")
     .Border(BorderStyle.Rounded))
   .WriteLine();
 

source/timewarp-terminal/widgets/unicode-width.cs

@@ -41,23 +41,34 @@ or UnicodeCategory.EnclosingMark
     if (value is >= 0xE0100 and <= 0xE01EF) // Variation selectors supplement
       return 0;
 
-    // ── Emoji and symbol ranges (width 2 in modern terminals) ──
-
-    // Miscellaneous Technical (⌚⌛⏰⏳⏩ etc.)
-    if (value is >= 0x2300 and <= 0x23FF)
-      return 2;
-    // Geometric Shapes (▶◀▪▫ etc.)
-    if (value is >= 0x25A0 and <= 0x25FF)
-      return 2;
-    // Miscellaneous Symbols (☀☁⚡♻ etc.)
-    if (value is >= 0x2600 and <= 0x26FF)
-      return 2;
-    // Dingbats (✅❌✂✈ etc.)
-    if (value is >= 0x2700 and <= 0x27BF)
-      return 2;
-    // Miscellaneous Symbols and Arrows (⬛⬜⭐⭕⬆⬇ etc.)
-    if (value is >= 0x2B00 and <= 0x2BFF)
+    // ── Emoji_Presentation=Yes code points (U+2000-U+2BFF) ──
+    // Source: Unicode 16.0 emoji-data.txt — only code points that render
+    // as width 2 without VS16. Text-presentation characters become width 2
+    // when combined with VS16 as multi-codepoint clusters (handled by GetTextWidth).
+    if (value is 0x231A or 0x231B                       // ⌚⌛
+        or (>= 0x23E9 and <= 0x23EC)                    // ⏩⏪⏫⏬
+        or 0x23F0 or 0x23F3                              // ⏰⏳
+        or 0x25FD or 0x25FE                              // ◽◾
+        or 0x2614 or 0x2615                              // ☔☕
+        or (>= 0x2648 and <= 0x2653)                     // ♈♉♊♋♌♍♎♏♐♑♒♓
+        or 0x267F or 0x2693 or 0x26A1                    // ♿⚓⚡
+        or 0x26AA or 0x26AB                              // ⚪⚫
+        or 0x26BD or 0x26BE                              // ⚽⚾
+        or 0x26C4 or 0x26C5 or 0x26CE                   // ⛄⛅⛎
+        or 0x26D4 or 0x26EA                              // ⛔⛪
+        or 0x26F2 or 0x26F3 or 0x26F5                    // ⛲⛳⛵
+        or 0x26FA or 0x26FD                              // ⛺⛽
+        or 0x2705                                        // ✅
+        or 0x270A or 0x270B                              // ✊✋
+        or 0x2728                                        // ✨
+        or 0x274C or 0x274E                              // ❌❎
+        or (>= 0x2753 and <= 0x2755) or 0x2757           // ❓❔❕❗
+        or (>= 0x2795 and <= 0x2797)                     // ➕➖➗
+        or 0x27B0 or 0x27BF                              // ➰➿
+        or 0x2B1B or 0x2B1C                              // ⬛⬜
+        or 0x2B50 or 0x2B55)                             // ⭐⭕
       return 2;
+
     // Wide angle brackets
     if (value is >= 0x2329 and <= 0x232A)
       return 2;