Fixes hang when switching branch / making large text changes

Don't concat action list for each changed character

Fixes #233

XSVim.Tests/MiscTests.fs

@@ -64,6 +64,12 @@ module ``Miscellaneous tests`` =
                 System.Collections$
                 """
 
+    [<Test>]
+    let ``Large text addition is not too slow!``() =
+        let _, state, editor =
+            test " $" ""
+        editor.InsertText(0, new System.String('x', 200000))
+
     [<Test>]
     let ``backspace is repeated``() =
         assertText "d$" "iabc<bs> <esc>." "abab $ d"

XSVim/Addin.fs

@@ -22,11 +22,14 @@ module Subscriptions =
 
                 let newState = { state with lastAction = actions }
                 Vim.editorStates.[editor.FileName] <- newState
+
             if change.Offset + change.InsertionLength = editor.CaretOffset then
+                let state = Vim.editorStates.[editor.FileName]
+                let typedChars =
+                    [ for c in change.InsertedText.Text do
+                        yield typeChar (Key c) ]
                 let vimState = 
-                    change.InsertedText.Text
-                    |> Seq.fold(fun state c ->
-                                   { state with lastAction = state.lastAction @ [ typeChar (Key c) ]}) (Vim.editorStates.[editor.FileName])
+                   { state with lastAction = state.lastAction @ typedChars }
                 Vim.editorStates.[editor.FileName] <- vimState
 
 type XSVim() as this =

XSVim/Properties/AssemblyInfo.fs

@@ -5,7 +5,7 @@ open System.Runtime.CompilerServices
 [<AutoOpen>]
 module AddinVersion =
     [<Literal>]
-    let version = "0.64.4.76"
+    let version = "0.64.5.76"
 
 [<assembly: AssemblyTitle("XSVim")>]
 // The assembly version has the format {Major}.{Minor}.{Build}.{Revision}

test.sh

@@ -1 +1 @@
-mono "/Applications/Visual Studio.app/Contents/Resources/lib/monodevelop/bin/vstool.exe" run-md-tests XSVim.Tests/bin/Debug/XSVim.Tests.dll
+mono "/Applications/Visual Studio.app/Contents/Resources/lib/monodevelop/bin/vstool.exe" run-md-tests XSVim.Tests/bin/Debug/XSVim.Tests.dll -labels