diff --git a/src/fsharp/fsc.fs b/src/fsharp/fsc.fs
index 839d7b4d631..e140b3351f5 100644
--- a/src/fsharp/fsc.fs
+++ b/src/fsharp/fsc.fs
@@ -102,7 +102,7 @@ let ConsoleErrorLoggerUpToMaxErrors (tcConfigB: TcConfigBuilder, exiter : Exiter
             member __.HandleIssue(tcConfigB, err, isError) =
                 DoWithErrorColor isError (fun () -> 
                     let diag = OutputDiagnostic (tcConfigB.implicitIncludeDir, tcConfigB.showFullPaths, tcConfigB.flatErrors, tcConfigB.errorStyle, isError)
-                    writeViaBufferWithEnvironmentNewLines stderr diag err
+                    writeViaBuffer stderr diag err
                     stderr.WriteLine())
     } :> ErrorLogger
 
@@ -316,7 +316,7 @@ module InterfaceFileWriter =
 
         for (TImplFile (_, _, mexpr, _, _, _)) in declaredImpls do
             let denv = BuildInitialDisplayEnvForSigFileGeneration tcGlobals
-            writeViaBufferWithEnvironmentNewLines os (fun os s -> Printf.bprintf os "%s\n\n" s)
+            writeViaBuffer os (fun os s -> Printf.bprintf os "%s\n\n" s)
               (NicePrint.layoutInferredSigOfModuleExpr true denv infoReader AccessibleFromSomewhere range0 mexpr |> Layout.squashTo 80 |> Layout.showL)
        
         if tcConfig.printSignatureFile <> "" then os.Dispose()
diff --git a/src/fsharp/fsi/fsi.fs b/src/fsharp/fsi/fsi.fs
index cd43753ab50..9f6df3f16a9 100644
--- a/src/fsharp/fsi/fsi.fs
+++ b/src/fsharp/fsi/fsi.fs
@@ -502,8 +502,8 @@ type internal FsiStdinSyphon(errorWriter: TextWriter) =
             let isError = true
             DoWithErrorColor isError (fun () ->
                 errorWriter.WriteLine();
-                writeViaBufferWithEnvironmentNewLines errorWriter (OutputDiagnosticContext "  " syphon.GetLine) err; 
-                writeViaBufferWithEnvironmentNewLines errorWriter (OutputDiagnostic (tcConfig.implicitIncludeDir,tcConfig.showFullPaths,tcConfig.flatErrors,tcConfig.errorStyle,isError))  err;
+                writeViaBuffer errorWriter (OutputDiagnosticContext "  " syphon.GetLine) err; 
+                writeViaBuffer errorWriter (OutputDiagnostic (tcConfig.implicitIncludeDir,tcConfig.showFullPaths,tcConfig.flatErrors,tcConfig.errorStyle,isError))  err;
                 errorWriter.WriteLine()
                 errorWriter.WriteLine()
                 errorWriter.Flush()))
@@ -548,8 +548,8 @@ type internal ErrorLoggerThatStopsOnFirstError(tcConfigB:TcConfigBuilder, fsiStd
           DoWithErrorColor isError (fun () -> 
             if ReportWarning tcConfigB.errorSeverityOptions err then 
                 fsiConsoleOutput.Error.WriteLine()
-                writeViaBufferWithEnvironmentNewLines fsiConsoleOutput.Error (OutputDiagnosticContext "  " fsiStdinSyphon.GetLine) err
-                writeViaBufferWithEnvironmentNewLines fsiConsoleOutput.Error (OutputDiagnostic (tcConfigB.implicitIncludeDir,tcConfigB.showFullPaths,tcConfigB.flatErrors,tcConfigB.errorStyle,isError)) err
+                writeViaBuffer fsiConsoleOutput.Error (OutputDiagnosticContext "  " fsiStdinSyphon.GetLine) err
+                writeViaBuffer fsiConsoleOutput.Error (OutputDiagnostic (tcConfigB.implicitIncludeDir,tcConfigB.showFullPaths,tcConfigB.flatErrors,tcConfigB.errorStyle,isError)) err
                 fsiConsoleOutput.Error.WriteLine()
                 fsiConsoleOutput.Error.WriteLine()
                 fsiConsoleOutput.Error.Flush())
diff --git a/src/fsharp/lib.fs b/src/fsharp/lib.fs
index b9653f35c7d..2b9d584bdc4 100755
--- a/src/fsharp/lib.fs
+++ b/src/fsharp/lib.fs
@@ -313,19 +313,12 @@ let bufs f =
     f buf 
     buf.ToString()
 
-let buff (os: TextWriter) f x = 
+// writing to output stream via a string buffer.
+let writeViaBuffer (os: TextWriter) f x = 
     let buf = System.Text.StringBuilder 100 
     f buf x 
     os.Write(buf.ToString())
 
-// Converts "\n" into System.Environment.NewLine before writing to os. See lib.fs:buff
-let writeViaBufferWithEnvironmentNewLines (os: TextWriter) f x = 
-    let buf = System.Text.StringBuilder 100 
-    f buf x
-    let text = buf.ToString()
-    let text = text.Replace("\n", System.Environment.NewLine)
-    os.Write text
-        
 //---------------------------------------------------------------------------
 // Imperative Graphs 
 //---------------------------------------------------------------------------
diff --git a/tests/fsharp/core/load-script/out.stderr.bsl b/tests/fsharp/core/load-script/out.stderr.bsl
index 0c48e3a9444..3090d5e2f89 100644
--- a/tests/fsharp/core/load-script/out.stderr.bsl
+++ b/tests/fsharp/core/load-script/out.stderr.bsl
@@ -1,4 +1,3 @@
 
 usesfsi.fsx(2,1): error FS0039: The value, namespace, type or module 'fsi' is not defined. Maybe you want one of the following:
-
    fst
diff --git a/tests/fsharp/typecheck/sigs/neg04.bsl b/tests/fsharp/typecheck/sigs/neg04.bsl
index 058e3226a02..77df1028d21 100644
--- a/tests/fsharp/typecheck/sigs/neg04.bsl
+++ b/tests/fsharp/typecheck/sigs/neg04.bsl
@@ -12,7 +12,6 @@ neg04.fs(22,8,22,17): typecheck error FS0912: This declaration element is not pe
 neg04.fs(26,8,26,17): typecheck error FS0912: This declaration element is not permitted in an augmentation
 
 neg04.fs(32,8,32,11): typecheck error FS0039: The field, constructor or member 'Nan' is not defined. Maybe you want one of the following:
-
    IsNaN
 
 neg04.fs(46,69,46,94): typecheck error FS0001: Type mismatch. Expecting a
diff --git a/tests/fsharp/typecheck/sigs/neg06.bsl b/tests/fsharp/typecheck/sigs/neg06.bsl
index bd3a528947b..f7fe3615e41 100644
--- a/tests/fsharp/typecheck/sigs/neg06.bsl
+++ b/tests/fsharp/typecheck/sigs/neg06.bsl
@@ -1,6 +1,5 @@
 
 neg06.fs(3,40,3,45): typecheck error FS0039: The field, constructor or member 'Ascii' is not defined. Maybe you want one of the following:
-
    ASCII
 
 neg06.fs(12,6,12,31): typecheck error FS0942: Struct types are always sealed
diff --git a/tests/fsharp/typecheck/sigs/neg07.bsl b/tests/fsharp/typecheck/sigs/neg07.bsl
index af0466dd3f0..614d9b222a6 100644
--- a/tests/fsharp/typecheck/sigs/neg07.bsl
+++ b/tests/fsharp/typecheck/sigs/neg07.bsl
@@ -4,7 +4,6 @@ neg07.fs(7,10,7,29): typecheck error FS0049: Uppercase variable identifiers shou
 neg07.fs(7,10,7,29): typecheck error FS0049: Uppercase variable identifiers should not generally be used in patterns, and may indicate a misspelt pattern name.
 
 neg07.fs(24,13,24,23): typecheck error FS0039: The value or constructor 'UnionCase1' is not defined. Maybe you want one of the following:
-
    X.UnionCase1
 
 neg07.fs(27,11,27,21): typecheck error FS0049: Uppercase variable identifiers should not generally be used in patterns, and may indicate a misspelt pattern name.
@@ -14,7 +13,6 @@ neg07.fs(28,11,28,21): typecheck error FS0049: Uppercase variable identifiers sh
 neg07.fs(28,11,28,21): typecheck error FS0026: This rule will never be matched
 
 neg07.fs(31,18,31,28): typecheck error FS0039: The value or constructor 'UnionCase1' is not defined. Maybe you want one of the following:
-
    X.UnionCase1
 
 neg07.fs(35,11,35,21): typecheck error FS0049: Uppercase variable identifiers should not generally be used in patterns, and may indicate a misspelt pattern name.
@@ -24,11 +22,9 @@ neg07.fs(36,11,36,21): typecheck error FS0049: Uppercase variable identifiers sh
 neg07.fs(36,11,36,21): typecheck error FS0026: This rule will never be matched
 
 neg07.fs(46,15,46,27): typecheck error FS0039: The record label 'RecordLabel1' is not defined. Maybe you want one of the following:
-
    R.RecordLabel1
 
 neg07.fs(47,19,47,31): typecheck error FS0039: The record label 'RecordLabel1' is not defined. Maybe you want one of the following:
-
    R.RecordLabel1
 
 neg07.fs(57,10,57,17): typecheck error FS1196: The 'UseNullAsTrueValue' attribute flag may only be used with union types that have one nullary case and at least one non-nullary case
diff --git a/tests/fsharp/typecheck/sigs/neg10.bsl b/tests/fsharp/typecheck/sigs/neg10.bsl
index c31220273da..2e94ef5bd9b 100644
--- a/tests/fsharp/typecheck/sigs/neg10.bsl
+++ b/tests/fsharp/typecheck/sigs/neg10.bsl
@@ -63,9 +63,7 @@ neg10.fs(169,32,169,35): typecheck error FS0035: This construct is deprecated: T
 
 neg10.fs(169,32,169,33): typecheck error FS3213: The member 'X : unit -> 'a' matches multiple overloads of the same method.
 Please restrict it to one of the following:
-
    X : unit -> 'a
-
    X : unit -> 'a.
 
 neg10.fs(169,19,169,26): typecheck error FS0783: At least one override did not correctly implement its corresponding abstract member
diff --git a/tests/fsharp/typecheck/sigs/neg111.bsl b/tests/fsharp/typecheck/sigs/neg111.bsl
index afe770b8fdc..c5048f7c299 100644
--- a/tests/fsharp/typecheck/sigs/neg111.bsl
+++ b/tests/fsharp/typecheck/sigs/neg111.bsl
@@ -4,11 +4,8 @@ neg111.fs(2,552,2,557): typecheck error FS0039: The type 'fail1' is not defined.
 neg111.fs(2,552,2,557): typecheck error FS0039: The type 'fail1' is not defined.
 
 neg111.fs(3,624,3,629): typecheck error FS0039: The value or constructor 'fail2' is not defined. Maybe you want one of the following:
-
    Failure
-
    failwith
-
    failwithf
 
 neg111.fs(5,538,5,540): typecheck error FS0003: This value is not a function and cannot be applied.
diff --git a/tests/fsharp/typecheck/sigs/neg15.bsl b/tests/fsharp/typecheck/sigs/neg15.bsl
index c8c59c1dc29..92d49dd44a1 100644
--- a/tests/fsharp/typecheck/sigs/neg15.bsl
+++ b/tests/fsharp/typecheck/sigs/neg15.bsl
@@ -30,21 +30,15 @@ neg15.fs(115,19,115,48): typecheck error FS0072: Lookup on object of indetermina
 neg15.fs(116,20,116,73): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
 
 neg15.fs(122,32,122,57): typecheck error FS0039: The value, constructor, namespace or type 'InternalTagOfInternalType' is not defined. Maybe you want one of the following:
-
    InternalUnionType
-
    InternalRecordType
-
    DefaultTagOfInternalType
 
 neg15.fs(128,31,128,61): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
 
 neg15.fs(135,31,135,56): typecheck error FS0039: The value, constructor, namespace or type 'InternalTagOfInternalType' is not defined. Maybe you want one of the following:
-
    InternalUnionType
-
    InternalRecordType
-
    DefaultTagOfInternalType
 
 neg15.fs(141,30,141,60): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
diff --git a/tests/fsharp/typecheck/sigs/neg17.bsl b/tests/fsharp/typecheck/sigs/neg17.bsl
index 499430cdaa7..4fa0cd39c5c 100644
--- a/tests/fsharp/typecheck/sigs/neg17.bsl
+++ b/tests/fsharp/typecheck/sigs/neg17.bsl
@@ -8,13 +8,11 @@ neg17b.fs(8,18,8,43): typecheck error FS1092: The type 'PrivateUnionType' is not
 neg17b.fs(11,26,11,41): typecheck error FS0039: The field, constructor or member 'PrivateProperty' is not defined.
 
 neg17b.fs(12,24,12,45): typecheck error FS0039: The field, constructor or member 'PrivateStaticProperty' is not defined. Maybe you want one of the following:
-
    InternalStaticProperty
 
 neg17b.fs(13,26,13,39): typecheck error FS0039: The field, constructor or member 'PrivateMethod' is not defined.
 
 neg17b.fs(14,24,14,43): typecheck error FS0039: The field, constructor or member 'PrivateStaticMethod' is not defined. Maybe you want one of the following:
-
    InternalStaticMethod
 
 neg17b.fs(15,17,15,52): typecheck error FS1092: The type 'PrivateRecordType' is not accessible from this code location
@@ -26,9 +24,7 @@ neg17b.fs(16,19,16,48): typecheck error FS0072: Lookup on object of indeterminat
 neg17b.fs(17,19,17,47): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
 
 neg17b.fs(21,31,21,77): typecheck error FS0039: The value, constructor, namespace or type 'DefaultTagOfUnionTypeWithPrivateRepresentation' is not defined. Maybe you want one of the following:
-
    DefaultTagOfInternalType
-
    UnionTypeWithPrivateRepresentation
 
 neg17b.fs(29,31,29,61): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
@@ -36,13 +32,11 @@ neg17b.fs(29,31,29,61): typecheck error FS0072: Lookup on object of indeterminat
 neg17b.fs(30,31,30,84): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
 
 neg17b.fs(32,24,32,50): typecheck error FS0039: The type 'RecordTypeWithPrivateField' is not defined in 'Neg17.M'. Maybe you want one of the following:
-
    RecordTypeWithPrivateRepresentation
 
 neg17b.fs(43,30,43,60): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
 
 neg17b.fs(45,23,45,49): typecheck error FS0039: The type 'RecordTypeWithPrivateField' is not defined in 'Neg17.M'. Maybe you want one of the following:
-
    RecordTypeWithPrivateRepresentation
 
 neg17b.fs(54,20,54,50): typecheck error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved.
diff --git a/tests/fsharp/typecheck/sigs/neg25.bsl b/tests/fsharp/typecheck/sigs/neg25.bsl
index 6a9653c42dc..ebbf45ae77b 100644
--- a/tests/fsharp/typecheck/sigs/neg25.bsl
+++ b/tests/fsharp/typecheck/sigs/neg25.bsl
@@ -10,11 +10,8 @@ neg25.fs(87,19,87,25): typecheck error FS0366: No implementation was given for '
 neg25.fs(104,19,104,27): typecheck error FS0366: No implementation was given for 'abstract member AnotherNegativeTest.ITestSub.Meth1 : int -> int'. Note that all interface members must be implemented and listed under an appropriate 'interface' declaration, e.g. 'interface ... with member ...'.
 
 neg25.fs(126,27,126,35): typecheck error FS0366: No implementation was given for those members: 
-
 	'abstract member MissingInterfaceMemberTests.Test0.ITestSub.Meth2 : int -> int'
-
 	'abstract member MissingInterfaceMemberTests.Test0.ITest.Meth1 : string -> string'
-
 Note that all interface members must be implemented and listed under an appropriate 'interface' declaration, e.g. 'interface ... with member ...'.
 
 neg25.fs(147,27,147,35): typecheck error FS0366: No implementation was given for 'abstract member MissingInterfaceMemberTests.Test1.ITest.Meth1 : string -> string'. Note that all interface members must be implemented and listed under an appropriate 'interface' declaration, e.g. 'interface ... with member ...'.
diff --git a/tests/fsharp/typecheck/sigs/neg26.bsl b/tests/fsharp/typecheck/sigs/neg26.bsl
index d17ba9ed7ee..74a0337d928 100644
--- a/tests/fsharp/typecheck/sigs/neg26.bsl
+++ b/tests/fsharp/typecheck/sigs/neg26.bsl
@@ -7,9 +7,7 @@ neg26.fs(40,27,40,32): typecheck error FS0361: The override 'Meth1 : int -> int'
 
 neg26.fs(53,27,53,32): typecheck error FS3213: The member 'Meth1 : 'a -> 'a' matches multiple overloads of the same method.
 Please restrict it to one of the following:
-
    Meth1 : int -> int
-
    Meth1 : int -> int.
 
 neg26.fs(52,15,52,23): typecheck error FS0783: At least one override did not correctly implement its corresponding abstract member
diff --git a/tests/fsharp/typecheck/sigs/neg99.bsl b/tests/fsharp/typecheck/sigs/neg99.bsl
index 6482281b893..9f6010f249d 100644
--- a/tests/fsharp/typecheck/sigs/neg99.bsl
+++ b/tests/fsharp/typecheck/sigs/neg99.bsl
@@ -3,4 +3,4 @@ neg99.fs(19,16,19,64): typecheck error FS0077: Member constraints with the name
 
 neg99.fs(22,18,22,64): typecheck error FS0077: Member constraints with the name 'op_Explicit' are given special status by the F# compiler as certain .NET types are implicitly augmented with this member. This may result in runtime failures if you attempt to invoke the member constraint from your own code.
 
-neg99.fs(25,39,25,43): typecheck error FS0043: The type 'CrashFSC.OhOh.MyByte' does not support a conversion to the type 'CrashFSC.OhOh.MyByte'
\ No newline at end of file
+neg99.fs(25,39,25,43): typecheck error FS0043: The type 'CrashFSC.OhOh.MyByte' does not support a conversion to the type 'CrashFSC.OhOh.MyByte'
diff --git a/tests/fsharp/typecheck/sigs/version46/neg24.bsl b/tests/fsharp/typecheck/sigs/version46/neg24.bsl
index 96a64e8c88f..b782269bb54 100644
--- a/tests/fsharp/typecheck/sigs/version46/neg24.bsl
+++ b/tests/fsharp/typecheck/sigs/version46/neg24.bsl
@@ -27,4 +27,4 @@ neg24.fs(62,31,62,41): typecheck error FS0816: One or more of the overloads of t
 
 neg24.fs(64,44,64,48): typecheck error FS0816: One or more of the overloads of this method has curried arguments. Consider redesigning these members to take arguments in tupled form.
 
-neg24.fs(70,15,70,18): typecheck error FS0495: The member or object constructor 'M' has no argument or settable return property 'qez'. The required signature is member C.M : abc:int * def:string -> int.
\ No newline at end of file
+neg24.fs(70,15,70,18): typecheck error FS0495: The member or object constructor 'M' has no argument or settable return property 'qez'. The required signature is member C.M : abc:int * def:string -> int.