From 96fcb0c59d6c3a0e4013c2daee952b761e994f3a Mon Sep 17 00:00:00 2001
From: alexzzzs <alex3x192837465@gmail.com>
Date: Wed, 31 Dec 2025 00:47:13 +1100
Subject: [PATCH 1/3] Optimize FromUnderscoreDashSeparatedWords to reduce
 allocations

---
 src/Humanizer/StringHumanizeExtensions.cs | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/Humanizer/StringHumanizeExtensions.cs b/src/Humanizer/StringHumanizeExtensions.cs
index cf4f24ead..a0fe74889 100644
--- a/src/Humanizer/StringHumanizeExtensions.cs
+++ b/src/Humanizer/StringHumanizeExtensions.cs
@@ -32,8 +32,24 @@ public static partial class StringHumanizeExtensions
     private static Regex FreestandingSpacingCharRegex() => FreestandingSpacingCharRegexField;
 #endif
 
-    static string FromUnderscoreDashSeparatedWords(string input) =>
-        string.Join(" ", input.Split(['_', '-']));
+    static string FromUnderscoreDashSeparatedWords(string input)
+    {
+        #if NET7_0_OR_GREATER
+            return string.Create(input.Length, input, (span, state) =>
+            {
+                state.AsSpan().CopyTo(span);
+                for (var i = 0; i < span.Length; i++)
+                {
+                    if (span[i] == '_' || span[i] == '-')
+                    {
+                        span[i] = ' ';
+                    }
+                }
+            });
+        #else
+            return input.Replace('_', ' ').Replace('-', ' ');
+        #endif
+    }
 
     static string FromPascalCase(string input)
     {
@@ -160,4 +176,4 @@ internal static unsafe string Concat(char left, CharSpan right) =>
     internal static unsafe string Concat(CharSpan left, char right) =>
         Concat(left, new CharSpan(&right, 1));
 #endif
-}
\ No newline at end of file
+}

From 8403780a16ccfd02f0c1a483f84c8eaf455d661b Mon Sep 17 00:00:00 2001
From: Alex <alex3x192837465@gmail.com>
Date: Wed, 7 Jan 2026 22:39:13 +1100
Subject: [PATCH 2/3] Use MemoryExtensions.Replace instead of manual for loop

---
 src/Humanizer/StringHumanizeExtensions.cs | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/src/Humanizer/StringHumanizeExtensions.cs b/src/Humanizer/StringHumanizeExtensions.cs
index a0fe74889..64b1da4f0 100644
--- a/src/Humanizer/StringHumanizeExtensions.cs
+++ b/src/Humanizer/StringHumanizeExtensions.cs
@@ -32,25 +32,19 @@ public static partial class StringHumanizeExtensions
     private static Regex FreestandingSpacingCharRegex() => FreestandingSpacingCharRegexField;
 #endif
 
-    static string FromUnderscoreDashSeparatedWords(string input)
+   static string FromUnderscoreDashSeparatedWords(string input)
     {
         #if NET7_0_OR_GREATER
             return string.Create(input.Length, input, (span, state) =>
             {
                 state.AsSpan().CopyTo(span);
-                for (var i = 0; i < span.Length; i++)
-                {
-                    if (span[i] == '_' || span[i] == '-')
-                    {
-                        span[i] = ' ';
-                    }
-                }
+                span.Replace('_', ' ');
+                span.Replace('-', ' ');
             });
         #else
             return input.Replace('_', ' ').Replace('-', ' ');
         #endif
     }
-
     static string FromPascalCase(string input)
     {
         var result = string.Join(" ", PascalCaseWordPartsRegex()

From f3a7a456c15c4ccb0c2ebf805d6aa8ef98ce303e Mon Sep 17 00:00:00 2001
From: Alex <alex3x192837465@gmail.com>
Date: Fri, 9 Jan 2026 00:16:16 +1100
Subject: [PATCH 3/3] fix indentation/whitespace

---
 src/Humanizer/StringHumanizeExtensions.cs | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/Humanizer/StringHumanizeExtensions.cs b/src/Humanizer/StringHumanizeExtensions.cs
index 64b1da4f0..6142cbcba 100644
--- a/src/Humanizer/StringHumanizeExtensions.cs
+++ b/src/Humanizer/StringHumanizeExtensions.cs
@@ -32,19 +32,20 @@ public static partial class StringHumanizeExtensions
     private static Regex FreestandingSpacingCharRegex() => FreestandingSpacingCharRegexField;
 #endif
 
-   static string FromUnderscoreDashSeparatedWords(string input)
+    static string FromUnderscoreDashSeparatedWords(string input)
     {
-        #if NET7_0_OR_GREATER
-            return string.Create(input.Length, input, (span, state) =>
-            {
-                state.AsSpan().CopyTo(span);
-                span.Replace('_', ' ');
-                span.Replace('-', ' ');
-            });
-        #else
-            return input.Replace('_', ' ').Replace('-', ' ');
-        #endif
+#if NET7_0_OR_GREATER
+        return string.Create(input.Length, input, (span, state) =>
+        {
+            state.AsSpan().CopyTo(span);
+            span.Replace('_', ' ');
+            span.Replace('-', ' ');
+        });
+#else
+        return input.Replace('_', ' ').Replace('-', ' ');
+#endif
     }
+
     static string FromPascalCase(string input)
     {
         var result = string.Join(" ", PascalCaseWordPartsRegex()