void Command_Diff_Diff_VCSNormalFiles()
{
var files = GetSelectionStrings();
if (files.Any(file => !File.Exists(file)))
{
throw new Exception("Selections must be files.");
}
var original = files.Select(file => Versioner.GetUnmodifiedFile(file)).ToList();
var invalidIndexes = original.Indexes(file => file == null);
if (invalidIndexes.Any())
{
throw new Exception($"Unable to get unmodified files:\n{string.Join("\n", invalidIndexes.Select(index => files[index]))}");
}
var tabs = new Tabs();
for (var ctr = 0; ctr < files.Count; ctr++)
{
tabs.AddDiff(displayName1: Path.GetFileName(files[ctr]), modified1: false, bytes1: original[ctr], fileName2: files[ctr]);
}
}