From 723b6f87adadbe4e2cd6e96219e82219fc3df619 Mon Sep 17 00:00:00 2001
From: Kevin Day <thekevinday@gmail.com>
Date: Mon, 29 Jun 2020 19:59:12 -0500
Subject: [PATCH] Progress: more UTF-8 work

Complete more encodings.
From the look of things, most emojis are part of symbols, so no need to check for emojis when already checking for symbols.

Add phonetic.

Progress on emojis will be slow and piecemeal.
Symbols will likely be as bad as emoji.
---
 level_0/f_utf/c/private-utf.c | 887 ++++++++++++++++++++++++------------------
 level_0/f_utf/c/private-utf.h |  22 ++
 level_0/f_utf/c/utf.c         |  48 +++
 level_0/f_utf/c/utf.h         |  55 ++-
 4 files changed, 614 insertions(+), 398 deletions(-)

diff --git a/level_0/f_utf/c/private-utf.c b/level_0/f_utf/c/private-utf.c
index 7267fa1..0173309 100644
--- a/level_0/f_utf/c/private-utf.c
+++ b/level_0/f_utf/c/private-utf.c
@@ -44,7 +44,7 @@ extern "C" {
       return F_false;
     }
 
-    if (private_f_utf_character_is_emoji(character, width)) {
+    if (private_f_utf_character_is_phonetic(character, width)) {
       return F_false;
     }
 
@@ -87,7 +87,7 @@ extern "C" {
       return F_false;
     }
 
-    if (private_f_utf_character_is_emoji(character, width)) {
+    if (private_f_utf_character_is_phonetic(character, width)) {
       return F_false;
     }
 
@@ -146,6 +146,7 @@ extern "C" {
   f_return_status private_f_utf_character_is_control(const f_utf_character character, const uint8_t width) {
 
     if (width == 2) {
+
       // Latin-1 Supplement: U+0080 to U+009F.
       if (character >= 0xc2800000 && character <= 0xc29f0000) {
         return F_true;
@@ -155,6 +156,17 @@ extern "C" {
     }
 
     if (width == 3) {
+
+      // General Punctuation: U+200E and U+200F.
+      if (character == 0xe2808e00 || character == 0xe2808f00) {
+        return F_true;
+      }
+
+      // General Punctuation: U+2066 to U+2069.
+      if (character >= 0xe281a600 && character <= 0xe281a900) {
+        return F_true;
+      }
+
       // Special: U+FFF9 to U+FFFB.
       if (character >= 0xefbfb900 && character <= 0xefbfbb00) {
         return F_true;
@@ -164,6 +176,7 @@ extern "C" {
     }
 
     if (width == 4) {
+
       // Tags: U+E0001 and U+E007F.
       if (character == 0xf3a08081 || character == 0xf3a081bf) {
         return F_true;
@@ -196,471 +209,487 @@ extern "C" {
 #if !defined(_di_f_utf_character_is_emoji_) || !defined(_di_f_utf_is_emoji_)
   f_return_status private_f_utf_character_is_emoji(const f_utf_character character, const uint8_t width) {
 
-    // @todo ugh..emojis are all over the place, I only got as far as creating a list of Unicodes, convert these Unicodes to UTF-8 codes. (be sure too use width == comparisons.)
-/*
     // reduce the number of checks by grouping checks by first byte.
     uint8_t byte_first = f_macro_utf_character_to_char_1(character);
 
-    // U+00A9, U+00AE, U+203C, U+2049.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+    if (width == 2) {
+      // Latin-1 Supplement: U+00A9, U+00AE.
+      if (character == 0xc2a90000 || character == 0xc2ae0000) {
+        return F_true;
+      }
 
-    // U+2042, U+2122, U+2139.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
+      return F_false;
     }
 
-    // U+2194 to U+2199.
-    if (character >= 0xe2908000 && character <= 0xe290a600) {
-      return F_true;
-    }
+    if (width == 3) {
+      // General Punctuation: U+203C, U+2049.
+      if (character == 0xe280bc00 || character == 0xe2818900) {
+        return F_true;
+      }
 
-    // U+21A9, U+21AA, U+231A, U+231B.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // Letterlike Symbols: U+2122, U+2139
+      if (character == 0xe2818900 || character == 0xe284b900) {
+        return F_true;
+      }
 
-    // U+2328, U+23CF.
-    if (character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // Arrows: U+2194 to U+2199.
+      if (character >= 0xe2869400 && character <= 0xe2869900) {
+        return F_true;
+      }
 
-    // U+23E9 to U+23F3.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // Arrows: U+21A9, U+21AA.
+      if (character == 0xe286a900 || character == 0xe286aa00) {
+        return F_true;
+      }
 
-    // U+23F8 to U+23FA.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // Miscellaneous Technical: U+231A, U+231B.
+      if (character == 0xe28c9a00 || character == 0xe28c9b00) {
+        return F_true;
+      }
 
-    // U+24C2, U+25AA, U+25AB, U+25B6.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+  /*
+      // U+2328, U+23CF.
+      if (character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+25C0.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+23E9 to U+23F3.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+25FB to U+25FE.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+23F8 to U+23FA.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+2600 to U+2604.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+24C2, U+25AA, U+25AB, U+25B6.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+260E, U+2611, U+2614, U+2615.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+25C0.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2618, U+261D, U+2620, U+2622.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+25FB to U+25FE.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+2623, U+2626, U+262A, U+262E.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2600 to U+2604.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+262F.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+260E, U+2611, U+2614, U+2615.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2638 to U+263A.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+2618, U+261D, U+2620, U+2622.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2640, U+2642.
-    if (character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2623, U+2626, U+262A, U+262E.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2648 to U+2653.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+262F.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+265F, U+2660, U+2663, U+2665.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2638 to U+263A.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+2666, U+2668, U+267B, U+267E.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2640, U+2642.
+      if (character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+267F.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+2648 to U+2653.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+2692 to U+2697.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+265F, U+2660, U+2663, U+2665.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2699, U+269B, U+269C, U+26A0.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2666, U+2668, U+267B, U+267E.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+26A1, U+26A7, U+26AA, U+26AB.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+267F.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+26B0, U+26B1, U+26BD, U+26BE.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2692 to U+2697.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+26C4, U+26C5, U+26C8, U+26CE.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2699, U+269B, U+269C, U+26A0.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+26CF, U+26D1, U+26D3, U+26D4.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+26A1, U+26A7, U+26AA, U+26AB.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+26E9, U+26EA.
-    if (character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+26B0, U+26B1, U+26BD, U+26BE.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+26F0 to U+26F5.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+26C4, U+26C5, U+26C8, U+26CE.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+26F7 to U+26FA.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+26CF, U+26D1, U+26D3, U+26D4.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+26FD, U+2702, U+2705.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+26E9, U+26EA.
+      if (character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2708 to U+270D.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+26F0 to U+26F5.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+270F, U+2712, U+2714, U+2716.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+26F7 to U+26FA.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+271D, U+2721, U+2728, U+2733.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+26FD, U+2702, U+2705.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2734, U+2744, U+2747, U+274C.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2708 to U+270D.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+274E.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+270F, U+2712, U+2714, U+2716.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2753 to U+2755.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+271D, U+2721, U+2728, U+2733.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2757, U+2763, U+2764.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2734, U+2744, U+2747, U+274C.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2795 to U+2797.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+274E.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+27A1, U+27B0, U+27BF, U+2934.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2753 to U+2755.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+2935.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+2757, U+2763, U+2764.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+2B05 to U+2B07.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+2795 to U+2797.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+2B1B, U+2B1C, U+2B50, U+2B55.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+27A1, U+27B0, U+27BF, U+2934.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+3030, U+303D, U+303D, U+3297.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2935.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+3299, U+1F004.
-    if (character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+2B05 to U+2B07.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F0CF to U+1F171.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+2B1B, U+2B1C, U+2B50, U+2B55.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F17E, U+1F17F, U+1F18E.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+3030, U+303D, U+303D, U+3297.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F191 to U+1F19A.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+3299, U+1F004.
+      if (character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F201, U+1F202, U+1F21A, U+1F22F.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F0CF to U+1F171.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F232 to U+1F23A.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F17E, U+1F17F, U+1F18E.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F250, U+1F251.
-    if (character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F191 to U+1F19A.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F300 to U+1F321.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F201, U+1F202, U+1F21A, U+1F22F.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F324 to U+1F393.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F232 to U+1F23A.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F396, U+1F397.
-    if (character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F250, U+1F251.
+      if (character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F399 to U+1F39B.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F300 to U+1F321.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F39E to U+1F3F0.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F324 to U+1F393.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F3F3 to U+1F3F5.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F396, U+1F397.
+      if (character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F3F7 to U+1F4FD.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F399 to U+1F39B.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F4FF to U+1F53D.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F39E to U+1F3F0.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F549 to U+1F54E.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F3F3 to U+1F3F5.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F550 to U+1F567.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F3F7 to U+1F4FD.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F56F, U+1F570.
-    if (character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F4FF to U+1F53D.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F573 to U+1F57A.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F549 to U+1F54E.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F587.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F550 to U+1F567.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F58A to U+1F58D.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F56F, U+1F570.
+      if (character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F590, U+1F595, U+1F596, U+1F5A4.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F573 to U+1F57A.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5A5, U+1F5A8, U+1F5B1, U+1F5B2.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F587.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5BC.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F58A to U+1F58D.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5C2 to U+1F5C4.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F590, U+1F595, U+1F596, U+1F5A4.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5D1 to U+1F5D3.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F5A5, U+1F5A8, U+1F5B1, U+1F5B2.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5DC to U+1F5DE.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F5BC.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5E1, U+1F5E3, U+1F5E8, U+1F5EF.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F5C2 to U+1F5C4.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5F3.
-    if (character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F5D1 to U+1F5D3.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F5FA to U+1F6C5.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F5DC to U+1F5DE.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F6CB to U+1F6D2.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F5E1, U+1F5E3, U+1F5E8, U+1F5EF.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F6D5 to U+1F6D7.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F5F3.
+      if (character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F6E0 to U+1F6E5.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F5FA to U+1F6C5.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F6E9, U+1F6EB, U+1F6EC, U+1F6F0.
-    if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
-      return F_true;
-    }
+      // U+1F6CB to U+1F6D2.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F6F3 to U+1F6FC.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F6D5 to U+1F6D7.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F7E0 to U+1F7EB.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F6E0 to U+1F6E5.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F90C to U+1F93A.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F6E9, U+1F6EB, U+1F6EC, U+1F6F0.
+      if (character == 0x00000000 || character == 0x00000000 || character == 0x00000000 || character == 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F93C to U+1F945.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F6F3 to U+1F6FC.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F947 to U+1F978.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F7E0 to U+1F7EB.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F97A to U+1F9CB.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F90C to U+1F93A.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1F9CD to U+1FA74.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F93C to U+1F945.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1FA70 to U+1FA74.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F947 to U+1F978.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1FA78 to U+1FA7A.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F97A to U+1F9CB.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1FA80 to U+1FA86.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1F9CD to U+1FA74.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1FA90 to U+1FAA8.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1FA70 to U+1FA74.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1FAB0 to U+1FAB6.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1FA78 to U+1FA7A.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1FAC0 to U+1FAC2.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
-    }
+      // U+1FA80 to U+1FA86.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
 
-    // U+1FAD0 to U+1FAD6.
-    if (character >= 0x00000000 && character <= 0x00000000) {
-      return F_true;
+      // U+1FA90 to U+1FAA8.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
+
+      // U+1FAB0 to U+1FAB6.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
+
+      // U+1FAC0 to U+1FAC2.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
+
+      // U+1FAD0 to U+1FAD6.
+      if (character >= 0x00000000 && character <= 0x00000000) {
+        return F_true;
+      }
+  */
     }
-*/
+
     return F_false;
   }
 #endif // !defined(_di_f_utf_character_is_emoji_) || !defined(_di_f_utf_is_emoji_)
@@ -670,7 +699,7 @@ extern "C" {
 
     if (width == 3) {
 
-      // U+2150 to U+218b.
+      // Number Forms: U+2150 to U+218B.
       if (character >= 0xe2859000 && character <= 0xe2868b00) {
         return F_true;
       }
@@ -680,7 +709,7 @@ extern "C" {
 
     if (width == 4) {
 
-      // U+102E1 to U+102FB.
+      // Coptic Epact Numbers: U+102E1 to U+102FB.
       if (character >= 0xf0908ba1 && character <= 0xf0908bbb) {
         return F_true;
       }
@@ -690,10 +719,46 @@ extern "C" {
   }
 #endif // !defined(_di_f_utf_character_is_numeric_) || !defined(_di_f_utf_is_numeric_)
 
+#if !defined(_di_f_utf_character_is_phonetic_) || !defined(_di_f_utf_is_phonetic_)
+  f_return_status private_f_utf_character_is_phonetic(const f_utf_character character, const uint8_t width) {
+
+    if (width == 3) {
+
+      // Phonetic Extensions: U+1D00 to U+1D7F.
+      if (character >= 0xe1b48000 && character <= 0xe1b5bf00) {
+        return F_true;
+      }
+
+      // Phonetic Extensions Supplement: U+1D80 to U+1DBF.
+      if (character >= 0xe1b6bf00 && character <= 0xe1b6bf00) {
+        return F_true;
+      }
+    }
+
+    return F_false;
+  }
+#endif // !defined(_di_f_utf_character_is_phonetic_) || !defined(_di_f_utf_is_phonetic_)
+
 #if !defined(_di_f_utf_character_is_punctuation_) || !defined(_di_f_utf_is_punctuation_)
   f_return_status private_f_utf_character_is_punctuation(const f_utf_character character, const uint8_t width) {
 
-    // @todo UTF-8 punctuation.
+    if (width == 3) {
+
+      // General Punctuation: U+2010 to U+2027.
+      if (character >= 0xe2809000 && character <= 0xe280a700) {
+        return F_true;
+      }
+
+      // General Punctuation: U+2030 to U+205E.
+      if (character >= 0xe280b000 && character <= 0xe2819e00) {
+        return F_true;
+      }
+
+      // Supplemental Punctuation: U+2E00 to U+2E52.
+      if (character == 0xe2b88000 || character == 0xe2b99200) {
+        return F_true;
+      }
+    }
 
     return F_false;
   }
@@ -722,12 +787,14 @@ extern "C" {
       }
 
       if (byte_first == 0xcd) {
+
         // Greek and Coptic: U+0378, U+0379.
         if (byte == 0xb8 || byte == 0xb9) {
           return F_false;
         }
       }
       else if (byte_first == 0xce) {
+
         // Greek and Coptic: U+0380 to U+0383.
         if (byte >= 0x80 && byte <= 0x83) {
           return F_false;
@@ -739,18 +806,21 @@ extern "C" {
         }
       }
       else if (byte_first == 0xd4) {
+
         // Armenian: U+0530.
         if (byte == 0xb0) {
           return F_false;
         }
       }
       else if (byte_first == 0xd5) {
+
         // Armenian: U+0557, U+0558, U+0560, U+0588.
         if (byte == 0x97 || byte == 0x98 || byte == 0xa0 || byte == 0x88) {
           return F_false;
         }
       }
       else if (byte_first == 0xd6) {
+
         // Armenian: U+058B, U+058C.
         if (byte == 0x8b || byte == 0x8c) {
           return F_false;
@@ -762,6 +832,7 @@ extern "C" {
         }
       }
       else if (byte_first == 0xd7) {
+
         // Hebrew: U+05C8 to U+05CF.
         if (byte >= 0x88 && byte <= 0x8F) {
           return F_false;
@@ -778,30 +849,35 @@ extern "C" {
         }
       }
       else if (byte_first == 0xd8) {
+
         // Arabic: U+061D.
         if (byte == 0x9d) {
           return F_false;
         }
       }
       else if (byte_first == 0xdc) {
+
         // Syriac: U+070E.
         if (byte == 0x8e) {
           return F_false;
         }
       }
       else if (byte_first == 0xdd) {
+
         // Syriac: U+074B, U+074C.
         if (byte == 0x8b || byte == 0x8c) {
           return F_false;
         }
       }
       else if (byte_first == 0xde) {
+
         // Thaana: U+07B2 to U+07BF.
         if (byte >= 0xb2 && byte <= 0xbf) {
           return F_false;
         }
       }
       else if (byte_first == 0xdf) {
+
         // NKo: U+07FB to U+07FF.
         if (byte >= 0xbb && byte <= 0xbf) {
           return F_false;
@@ -1292,6 +1368,7 @@ extern "C" {
         }
       }
       else if (byte_first == 0xe1) {
+
         // Batak: U+1BF4 to U+1BFB.
         if (bytes >= 0xafb4 && bytes <= 0xafbb) {
           return F_false;
@@ -1548,6 +1625,7 @@ extern "C" {
         }
       }
       else if (byte_first == 0xe2) {
+
         // CJK Radicals Supplement: U+2E9A, U+2EF4 to U+2EFF.
         if (bytes == 0xba9a || bytes >= 0xbbb4 && bytes <= 0xbbbf) {
           return F_false;
@@ -1684,6 +1762,7 @@ extern "C" {
         }
       }
       else if (byte_first == 0xe3) {
+
         // Bopomofo: U+3100 to U+3104.
         if (bytes >= 0x8480 && bytes <= 0x8484) {
           return F_false;
@@ -1720,18 +1799,21 @@ extern "C" {
         }
       }
       else if (byte_first == 0xe4) {
+
         // CJK Unified Ideographs Extension A: U+4DB6, U+4DBF.
         if (bytes >= 0xb6b6 && bytes <= 0xb6bf) {
           return F_false;
         }
       }
       else if (byte_first == 0xe9) {
+
         // CJK Unified Ideographs: U+9FD6, U+9FFF.
         if (bytes >= 0xbf96 && bytes <= 0xbfbf) {
           return F_false;
         }
       }
       else if (byte_first == 0xea) {
+
         // Balinese: U+1B4C to U+1B4F.
         if (bytes >= 0xad8c && bytes <= 0xad8f) {
           return F_false;
@@ -1903,6 +1985,7 @@ extern "C" {
         }
       }
       else if (byte_first == 0xee) {
+
         // @todo update this range to only 0xee.
         // consider all private use codes as valid, U+E000 to U+F8FF.
         if (character >= 0xee808000 && character <= 0xefa3bf00) {
@@ -1910,6 +1993,7 @@ extern "C" {
         }
       }
       else if (byte_first == 0xef) {
+
         // @todo update this range to only 0xef
         // consider all private use codes as valid, U+E000 to U+F8FF.
         if (character >= 0xee808000 && character <= 0xefa3bf00) {
@@ -2023,6 +2107,7 @@ extern "C" {
 
       if (byte_first == 0xf0) {
         if (byte_second == 0x90) {
+
           // Aegean Numbers: U+10103 to U+10106.
           if (bytes >= 0x8483 && bytes <= 0x8486) {
             return F_false;
@@ -2374,6 +2459,7 @@ extern "C" {
           }
         }
         else if (byte_second == 0x91) {
+
           // Ahom: U+1172C to U+1172F.
           if (bytes >= 0x9cac && bytes <= 0x9caf) {
             return F_false;
@@ -2600,6 +2686,7 @@ extern "C" {
           }
         }
         else if (byte_second == 0x92) {
+
           // Cuneiform: U+1239A to U+123FF.
           if (bytes >= 0x8e9a && bytes <= 0x8fbf) {
             return F_false;
@@ -2616,18 +2703,21 @@ extern "C" {
           }
         }
         else if (byte_second == 0x93) {
+
           // Egyptian Hieroglyphs: U+1342F.
           if (bytes == 0x90af) {
             return F_false;
           }
         }
         else if (byte_second == 0x94) {
+
           // Anatolian Hieroglyphs: U+14647 to U+1467F.
           if (bytes >= 0x9987 && bytes <= 0x99bf) {
             return F_false;
           }
         }
         else if (byte_second == 0x96) {
+
           // Bamum Supplement: U+16A39 to U+16A3F.
           if (bytes >= 0xa8b9 && bytes <= 0xa8bf) {
             return F_false;
@@ -2684,6 +2774,7 @@ extern "C" {
           }
         }
         else if (byte_second == 0x9b) {
+
           // Duployan: U+1BC6B to U+1BC6F.
           if (bytes >= 0xb1ab && bytes <= 0xb1af) {
             return F_false;
@@ -2715,6 +2806,7 @@ extern "C" {
           }
         }
         else if (byte_second == 0x9d) {
+
           // Ancient Greek Musical Notation: U+1D246 to U+1D24F.
           if (bytes >= 0x8986 && bytes <= 0x898f) {
             return F_false;
@@ -2786,6 +2878,7 @@ extern "C" {
           }
         }
         else if (byte_second == 0x9e) {
+
           // Adlam: U+1E94B to U+1E94F.
           if (bytes >= 0xa58b && bytes <= 0xa58f) {
             return F_false;
@@ -2822,6 +2915,7 @@ extern "C" {
           }
         }
         else if (byte_second == 0x9f) {
+
           // Alchemical Symbols: U+1F774 to U+1F77F.
           if (bytes >= 0x9db4 && bytes <= 0x9dbf) {
             return F_false;
@@ -2968,6 +3062,7 @@ extern "C" {
           }
         }
         else if (byte_second == 0x98) {
+
           // Tangut: U+187ED to U+187FF.
           if (bytes >= 0x9fad && bytes <= 0x9fbf) {
             return F_false;
@@ -2979,12 +3074,14 @@ extern "C" {
           }
         }
         else if (byte_second == 0xaa) {
+
           // CJK Unified Ideographs Extension B: U+2A6D7 to U+2A6DF.
           if (bytes >= 0x9b97 && bytes <= 0x9b9f) {
             return F_false;
           }
         }
         else if (byte_second == 0xab) {
+
           // CJK Unified Ideographs Extension C: U+2B735 to U+2B73F.
           if (bytes >= 0x9cb5 && bytes <= 0x9cbf) {
             return F_false;
@@ -2996,12 +3093,14 @@ extern "C" {
           }
         }
         else if (byte_second == 0xac) {
+
           // CJK Unified Ideographs Extension E: U+2CF92 to U+2CF9F.
           if (bytes >= 0xbe92 && bytes <= 0xbe9f) {
             return F_false;
           }
         }
         else if (byte_second == 0xaf) {
+
           // CJK Compatibility Ideographs Supplement: U+2FA1E to U+2FA1F.
           if (bytes >= 0xa89e && bytes <= 0xa89f) {
             return F_false;
@@ -3009,6 +3108,7 @@ extern "C" {
         }
       }
       else if (byte_first == 0xf3) {
+
         // Consider all private use codes as valid, U+F0000 to U+FFFFF.
         if (bytes >= 0x8080 && bytes <= 0xbfbf) {
           return F_true;
@@ -3020,12 +3120,14 @@ extern "C" {
         }
       }
       else if (byte_first == 0xf4) {
+
         // Consider all private use codes as valid, U+100000 to U+10FFFF.
         if (bytes >= 0x8080 && bytes <= 0xbfbf) {
           return F_true;
         }
       }
       else {
+
         // Unicode (and therefore UTF-8) does not support representing any character greater than this (U+10FFFF).
         if (character > 0xf48fbfbf) {
           return F_false;
@@ -3044,12 +3146,14 @@ extern "C" {
     uint8_t byte_first = f_macro_utf_character_to_char_1(character);
 
     if (byte_first == 0xc2) {
+
       // Latin-1 Supplement: U+00A0, U+0085.
       if (character == 0xc2a00000 || 0xc2850000) {
         return F_true;
       }
     }
     else if (byte_first == 0xe2) {
+
       // General Punctuation: U+2000, U+2001, U+2002, U+2003.
       if (character == 0xe2808000 || character == 0xe2808100 || character == 0xe2808200 || character == 0xe2808300) {
         return F_true;
@@ -3071,6 +3175,7 @@ extern "C" {
       }
     }
     else if (byte_first == 0xe3) {
+
       // CJK Symbols and Punctuation: U+3000.
       if (character == 0xe3808000) {
         return F_true;
@@ -3084,8 +3189,9 @@ extern "C" {
 #if !defined(_di_f_utf_character_is_whitespace_modifier_) || !defined(_di_f_utf_is_whitespace_modifier_)
   f_return_status private_f_utf_character_is_whitespace_modifier(const f_utf_character character, const uint8_t width) {
 
-    // U+02B0 to U+02FF.
     if (width == 2) {
+
+      // Spacing Modifier Letters: U+02B0 to U+02FF.
       if (character >= 0xcab00000 && character <= 0xcbbf0000) {
         return F_true;
       }
@@ -3102,7 +3208,23 @@ extern "C" {
       return F_true;
     }
 
-    // @todo UTF-8 underscores?
+    if (width == 3) {
+
+      // General Punctuation: U+203F (‿), U+2017 (‗), U+203E (‾), U+2040 (⁀).
+      if (character == 0xe280bf00 || character == 0xe2809700 || character == 0xe280be00 || character == 0xe2818000) {
+        return F_true;
+      }
+
+      // General Punctuation: U+2054 (⁔), U+FE4D (﹍), U+FE4E (﹎), U+FE4F (﹏).
+      if (character == 0xe2819400 || character == 0xefb98d00 || character == 0xefb98e00 || character == 0xefb98f00) {
+        return F_true;
+      }
+
+      // General Punctuation: U+FF3F (＿).
+      if (character == 0xefbcbf00) {
+        return F_true;
+      }
+    }
 
     return F_false;
   }
@@ -3115,7 +3237,13 @@ extern "C" {
       return F_true;
     }
 
-    // @todo UTF-8 dashes?
+    if (width == 3) {
+
+      // General Punctuation: U+2010 to U+2015.
+      if (character >= 0xe2809000 && character <= 0xe2809500) {
+        return F_true;
+      }
+    }
 
     return F_false;
   }
@@ -3128,8 +3256,6 @@ extern "C" {
       return F_true;
     }
 
-    // @todo UTF-8 pluses?
-
     return F_false;
   }
 #endif // !defined(_di_f_utf_character_is_word_dash_plus_) || !defined(_di_f_utf_is_word_dash_plus_)
@@ -3140,18 +3266,21 @@ extern "C" {
     uint8_t byte_first = f_macro_utf_character_to_char_1(character);
 
     if (byte_first == 0xe1) {
+
       // Mongolian: U+180E.
       if (character == 0xe1a08e00) {
         return F_true;
       }
     }
     else if (byte_first == 0xe2) {
+
       // General Punctuation: U+200B, U+200C, U+200D, U+2060.
       if (character == 0xe2808b00 || character == 0xe2808c00 || character == 0xe2808d00 || character == 0xe281a000) {
         return F_true;
       }
     }
     else if (byte_first == 0xef) {
+
       // Arabic Presentation Forms-B: U+FEFF.
       if (character == 0xefbbbf00) {
         return F_true;
diff --git a/level_0/f_utf/c/private-utf.h b/level_0/f_utf/c/private-utf.h
index d09dba9..b4ff964 100644
--- a/level_0/f_utf/c/private-utf.h
+++ b/level_0/f_utf/c/private-utf.h
@@ -172,6 +172,28 @@ extern "C" {
 #endif // !defined(_di_f_utf_character_is_numeric_) || !defined(_di_f_utf_is_numeric_)
 
 /**
+ * Private implementation of f_utf_character_is_phonetic().
+ *
+ * Intended to be shared to each of the different implementation variations.
+ *
+ * @param character
+ *   The character to validate.
+ * @param width
+ *   The number of bytes repesenting the character width.
+ *
+ * @return
+ *   F_true if a UTF-8 control character.
+ *   F_false if not a UTF-8 control character.
+ *   F_utf (with error bit) if character is an invalid UTF-8 character.
+ *
+ * @see f_utf_character_is_phonetic()
+ * @see f_utf_is_phonetic()
+ */
+#if !defined(_di_f_utf_character_is_phonetic_) || !defined(_di_f_utf_is_phonetic_)
+  extern f_return_status private_f_utf_character_is_phonetic(const f_utf_character character, const uint8_t width) f_gcc_attribute_visibility_internal;
+#endif // !defined(_di_f_utf_character_is_phonetic_) || !defined(_di_f_utf_is_phonetic_)
+
+/**
  * Private implementation of f_utf_character_is_punctuation().
  *
  * Intended to be shared to each of the different implementation variations.
diff --git a/level_0/f_utf/c/utf.c b/level_0/f_utf/c/utf.c
index bda828d..9c5126d 100644
--- a/level_0/f_utf/c/utf.c
+++ b/level_0/f_utf/c/utf.c
@@ -278,6 +278,23 @@ extern "C" {
   }
 #endif // _di_f_utf_character_is_numeric_
 
+#ifndef _di_f_utf_character_is_phonetic_
+  f_return_status f_utf_character_is_phonetic(const f_utf_character character) {
+    unsigned short width = f_macro_utf_character_width_is(character);
+
+    if (width == 0) {
+      // There are no ASCII phonetic characters.
+      return F_false;
+    }
+
+    if (width == 1) {
+      return F_status_is_error(F_utf);
+    }
+
+    return private_f_utf_character_is_phonetic(character, width);
+  }
+#endif // _di_f_utf_character_is_phonetic_
+
 #ifndef _di_f_utf_character_is_punctuation_
   f_return_status f_utf_character_is_punctuation(const f_utf_character character) {
     unsigned short width = f_macro_utf_character_width_is(character);
@@ -880,6 +897,37 @@ extern "C" {
   }
 #endif // _di_f_utf_is_numeric_
 
+#ifndef _di_f_utf_is_phonetic_
+  f_return_status f_utf_is_phonetic(const f_string character, const f_string_length width_max) {
+    #ifndef _di_level_0_parameter_checking_
+      if (width_max < 1) return F_status_set_error(F_parameter);
+    #endif // _di_level_0_parameter_checking_
+
+    uint8_t width = f_macro_utf_byte_width_is(*character);
+
+    if (width == 0) {
+      // There are no ASCII phonetic characters.
+      return F_false;
+    }
+
+    if (width == 1) {
+      return F_status_is_error(F_incomplete_utf);
+    }
+
+    f_utf_character character_utf = 0;
+
+    {
+      f_status status = 0;
+
+      status = f_utf_char_to_character(character, width_max, &character_utf);
+
+      if (status != F_none) return status;
+    }
+
+    return private_f_utf_character_is_phonetic(character_utf, width);
+  }
+#endif // _di_f_utf_is_phonetic_
+
 #ifndef _di_f_utf_is_punctuation_
   f_return_status f_utf_is_punctuation(const f_string character, const f_string_length width_max) {
     #ifndef _di_level_0_parameter_checking_
diff --git a/level_0/f_utf/c/utf.h b/level_0/f_utf/c/utf.h
index 443eef9..dd9dbd4 100644
--- a/level_0/f_utf/c/utf.h
+++ b/level_0/f_utf/c/utf.h
@@ -277,7 +277,6 @@ extern "C" {
  *   F_utf (with error bit) if character is an invalid UTF-8 character.
  *
  * @see isgraph()
- * @see f_utf_is_graph()
  */
 #ifndef _di_f_utf_character_is_graph_
   extern f_return_status f_utf_character_is_graph(const f_utf_character character);
@@ -295,13 +294,27 @@ extern "C" {
  *   F_utf (with error bit) if character is an invalid UTF-8 character.
  *
  * @see isdigit()
- * @see f_utf_is_numeric()
  */
 #ifndef _di_f_utf_character_is_numeric_
   extern f_return_status f_utf_character_is_numeric(const f_utf_character character);
 #endif // _di_f_utf_character_is_numeric_
 
 /**
+ * Check to see if the entire byte block of the character is an ASCII or UTF-8 phonetic character.
+ *
+ * @param character
+ *   The character to validate.
+ *
+ * @return
+ *   F_true if a UTF-8 phonetic character.
+ *   F_false if not a UTF-8 phonetic character.
+ *   F_utf (with error bit) if character is an invalid UTF-8 character.
+ */
+#ifndef _di_f_utf_character_is_phonetic_
+  extern f_return_status f_utf_character_is_phonetic(const f_utf_character character);
+#endif // _di_f_utf_character_is_phonetic_
+
+/**
  * Check to see if the entire byte block of the character is an ASCII or UTF-8 punctuation character.
  *
  * @todo Incomplete, UTF-8 codes not yet checked!
@@ -313,8 +326,6 @@ extern "C" {
  *   F_true if a UTF-8 punctuation character.
  *   F_false if not a UTF-8 punctuation character.
  *   F_utf (with error bit) if character is an invalid UTF-8 character.
- *
- * @see f_utf_is_punctuation()
  */
 #ifndef _di_f_utf_character_is_punctuation_
   extern f_return_status f_utf_character_is_punctuation(const f_utf_character character);
@@ -332,8 +343,6 @@ extern "C" {
  *   F_true if a UTF-8 symbol character.
  *   F_false if not a UTF-8 symbol character.
  *   F_utf (with error bit) if character is an invalid UTF-8 character.
- *
- * @see f_utf_is_symbol()
  */
 #ifndef _di_f_utf_character_is_symbol_
   extern f_return_status f_utf_character_is_symbol(const f_utf_character character);
@@ -413,8 +422,6 @@ extern "C" {
  *
  * A word character is alpha-numeric or an underscore '_'.
  *
- * @todo Incomplete, UTF-8 codes not yet checked!
- *
  * @param character
  *   The character to validate.
  *
@@ -424,7 +431,6 @@ extern "C" {
  *   F_utf (with error bit) if character is an invalid UTF-8 character.
  *
  * @see isalnum()
- * @see f_utf_is_word()
  */
 #ifndef _di_f_utf_character_is_word_
   extern f_return_status f_utf_character_is_word(const f_utf_character character);
@@ -435,8 +441,6 @@ extern "C" {
  *
  * A word dash character is alpha-numeric, an underscore '_' or a dash '-'.
  *
- * @todo Incomplete, UTF-8 codes not yet checked!
- *
  * @param character
  *   The character to validate.
  *
@@ -446,7 +450,6 @@ extern "C" {
  *   F_utf (with error bit) if character is an invalid UTF-8 character.
  *
  * @see isalnum()
- * @see f_utf_is_word_dash()
  */
 #ifndef _di_f_utf_character_is_word_dash_
   extern f_return_status f_utf_character_is_word_dash(const f_utf_character character);
@@ -457,7 +460,7 @@ extern "C" {
  *
  * A word dash character is alpha-numeric, an underscore '_', a dash '-', or a plus '+'.
  *
- * @todo Incomplete, UTF-8 codes not yet checked!
+ * This does not include "invisible plus".
  *
  * @param character
  *   The character to validate.
@@ -468,7 +471,6 @@ extern "C" {
  *   F_utf (with error bit) if character is an invalid UTF-8 character.
  *
  * @see isalnum()
- * @see f_utf_is_word_dash()
  */
 #ifndef _di_f_utf_character_is_word_dash_plus_
   extern f_return_status f_utf_character_is_word_dash_plus(const f_utf_character character);
@@ -757,6 +759,25 @@ extern "C" {
 #endif // _di_f_utf_is_numeric_
 
 /**
+ * Check to see if the entire byte block of the character is an ASCII or UTF-8 phonetic character.
+ *
+ * @param character
+ *   The character to validate.
+ *   There must be enough space allocated to compare against, as limited by width_max.
+ * @param width_max
+ *   The maximum width available for checking.
+ *   Can be anything greater than 0.
+ *
+ * @return
+ *   F_true if a UTF-8 phonetic character.
+ *   F_false if not a UTF-8 phonetic character.
+ *   F_incomplete_utf (with error bit) if character is an incomplete UTF-8 fragment.
+ */
+#ifndef _di_f_utf_is_phonetic_
+  extern f_return_status f_utf_is_phonetic(const f_string character, const f_string_length width_max);
+#endif // _di_f_utf_is_phonetic_
+
+/**
  * Check to see if the entire byte block of the character is an ASCII or UTF-8 punctuation character.
  *
  * @todo Incomplete, UTF-8 codes not yet checked!
@@ -885,8 +906,6 @@ extern "C" {
  *
  * A word character is alpha-numeric or an underscore '_'.
  *
- * @todo Incomplete, UTF-8 codes not yet checked!
- *
  * @param character
  *   The character to validate.
  *   There must be enough space allocated to compare against, as limited by width_max.
@@ -910,8 +929,6 @@ extern "C" {
  *
  * A word dash character is alpha-numeric, an underscore '_' or a dash '-'.
  *
- * @todo Incomplete, UTF-8 codes not yet checked!
- *
  * @param character
  *   The character to validate.
  *   There must be enough space allocated to compare against, as limited by width_max.
@@ -935,7 +952,7 @@ extern "C" {
  *
  * A word dash character is alpha-numeric, an underscore '_', a dash '-', or a plus '+'.
  *
- * @todo Incomplete, UTF-8 codes not yet checked!
+ * This does not include "invisible plus".
  *
  * @param character
  *   The character to validate.
-- 
1.8.3.1