Change check scripts so they work exactly the same. Change normaliseA…

…llFiles.ps1 to strip all trailing spaces (even on blank lines).

build/tools/check-trailing-space-linux

@@ -3,7 +3,7 @@
 # Check that all files have trailing spaces stripped
 OutTrailingSpaceListFile='output/knockout-files-to-clean.txt'
 cd ..
-grep -nrI '[^ ][ ]\+$' * | grep -rv "^build/output/" > build/$OutTrailingSpaceListFile
+grep -nrI '[^ ][ ]\+$' `find * |grep -E "\.(js|html|css|bat|ps1)$"` | grep -v "^build/output/" > build/$OutTrailingSpaceListFile
 cd build
 if [ -s $OutTrailingSpaceListFile ]
 then

build/tools/check-trailing-space-windows.bat

@@ -3,17 +3,17 @@
 @rem Check that all files have trailing spaces stripped
 set OutTrailingSpaceListFile=output\knockout-files-to-clean.txt
 cd ..
-
-@rem Totally outlandish way to detect trailing whitespace on non-whitespace-only lines, because the DOS "findstr" command can't handle spaces in regexes.
-@rem We should consider changing the whole Windows build script to PowerShell, where this would be trivial and clean.
-set foundTrailingWhitespace=0
-findstr -rsen -c:" " *.js *.html *.css *.bat *.ps1 > build\%OutTrailingSpaceListFile%
-cscript build\tools\searchReplace.js " {2,}" "" build\%OutTrailingSpaceListFile% >nul
-for /f "tokens=1,2,* delims=:" %%i in (build\%OutTrailingSpaceListFile%) do @if "%%k" NEQ "" (
-    echo Error: Trailing whitespace on %%i line %%j
-    set foundTrailingWhitespace=1
-)
+findstr -nrs -c:"[^ ][ ][ ]*$" *.js *.html *.css *.bat *.ps1 |findstr -rv "^build\\output" > build\%OutTrailingSpaceListFile%
 cd build
+for %%R in (%OutTrailingSpaceListFile%) do if %%~zR gtr 0 goto :NeedFixTrailingSpace
+del %OutTrailingSpaceListFile%
+goto :TrailingSpaceOkay
+
+:NeedFixTrailingSpace
+echo The following files have trailing spaces that need to be cleaned up:
+echo.
+type %OutTrailingSpaceListFile%
 del %OutTrailingSpaceListFile%
+exit /b 1
 
-if %foundTrailingWhitespace% EQU 1 exit /b 1
+:TrailingSpaceOkay

build/tools/normaliseAllFiles.ps1

@@ -6,6 +6,6 @@ $allFiles | %{
     # Read file, remove trailing spaces/tabs, output back to file in CP1252 format (default for Git on Windows)
     # This will also ensure the file has a trailing linebreak
     Write-Host "Processing $_..."
-    $fileContent = (Get-Content $_) -replace "^(.*[^ \t])[ \t]+$", '$1'
+    $fileContent = (Get-Content $_) -replace "[ \t]+$", ""
     [System.IO.File]::WriteAllLines($_, $fileContent, [System.Text.Encoding]::GetEncoding(1252))
 }