From c43d2080e7cbc8ba011d2082a4c63bb3742d436e Mon Sep 17 00:00:00 2001
From: Bela VanderVoort <bela.vandervoort@optimizely.com>
Date: Sun, 8 Sep 2024 11:29:23 -0500
Subject: [PATCH] fixing issue when formatting with tabs that would convert
 tabs in comments into spaces.

closes #1343
---
 .../TestFiles/cs/Comments_Tabs.expected.test  | 29 +++++++++++++++++++
 .../TestFiles/cs/Comments_Tabs.test           | 16 ++++++++++
 Src/CSharpier/DocPrinter/DocPrinter.cs        |  6 ++++
 3 files changed, 51 insertions(+)
 create mode 100644 Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.expected.test

diff --git a/Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.expected.test b/Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.expected.test
new file mode 100644
index 000000000..e7d9db26a
--- /dev/null
+++ b/Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.expected.test
@@ -0,0 +1,29 @@
+public class Foo
+{
+	/**
+	 * comment
+	 */
+	public class Bar
+	{
+		/**
+		 * comment
+		 */
+		var x = 0;
+	}
+
+	public void SomeFunction()
+	{
+		/*
+		The following line is an example with an indent:
+			This line is indented by one tab.
+		*/
+		/*
+		The following line is an example with an indent:
+			This line is indented by 4 spaces but will be converted to 1 tab
+		*/
+		/*
+		The following line is an example with an indent:
+		   This line is indented by 3 spaces but will be left as 3 spaces
+		*/
+	}
+}
diff --git a/Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.test b/Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.test
index 34eeb769c..4da2abccc 100644
--- a/Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.test
+++ b/Src/CSharpier.Tests/FormattingTests/TestFiles/cs/Comments_Tabs.test
@@ -10,4 +10,20 @@ public class Foo
 		 */
 		var x = 0;
 	}
+
+	public void SomeFunction()
+	{
+		/*
+		The following line is an example with an indent:
+			This line is indented by one tab.
+		*/
+		/*
+		The following line is an example with an indent:
+		    This line is indented by 4 spaces but will be converted to 1 tab
+		*/
+		/*
+		The following line is an example with an indent:
+		   This line is indented by 3 spaces but will be left as 3 spaces
+		*/
+	}
 }
diff --git a/Src/CSharpier/DocPrinter/DocPrinter.cs b/Src/CSharpier/DocPrinter/DocPrinter.cs
index 0bdc3895c..8354fd47d 100644
--- a/Src/CSharpier/DocPrinter/DocPrinter.cs
+++ b/Src/CSharpier/DocPrinter/DocPrinter.cs
@@ -221,6 +221,12 @@ int CalculateIndentLength(string line) =>
                         this.Output.Append(indent.Value);
                         spacesToAppend -= indentLength;
                     }
+
+                    while (spacesToAppend > 0 && spacesToAppend >= this.PrinterOptions.IndentSize)
+                    {
+                        this.Output.Append('\t');
+                        spacesToAppend -= this.PrinterOptions.IndentSize;
+                    }
                 }
                 if (spacesToAppend > 0)
                 {