Reimplement AbstractFileReference>>#gtSaveContents: to no longer leav…

…e behind .backup files but to instead write first to a .new file, then delete the old one and rename the new one to the old one [feenkcom/gtoolkit#4153]

src/GToolkit-Inspector/AbstractFileReference.extension.st

@@ -419,11 +419,13 @@ AbstractFileReference >> gtPharoScriptFor: aView [
 
 { #category : #'*GToolkit-Inspector' }
 AbstractFileReference >> gtSaveContents: newContents [
-	(self fullName , '.backup') asFileReference ensureDelete.
-	self copyTo: (self fullName , '.backup') asFileReference.
-	^ self
-		ensureDelete;
-		writeStreamDo: [ :s | s nextPutAll: newContents ]
+	| newFile |
+	newFile := self , 'new'.
+	newFile ensureDelete.
+	newFile writeStreamDo: [ :stream | stream nextPutAll: newContents ].
+	self ensureDelete.
+	newFile renameTo: self basename.
+	^ newFile
 ]
 
 { #category : #'*GToolkit-Inspector' }