/x or /xq command line options not working when comparing folders?

[sdottaka]

Discussed in #640

^{Originally posted by CarlColijn February 20, 2021}
When I try to use the /x or /xq command line switch when comparing individual files this works wonderfully. However, when I tell WinMerge to compare two identical folders these switches don't seem to work. This is with and without a /r switch present.

Looking at the source I think I found the answer; the file MergeDoc.cpp has the following on line 2935:

// Exit if files are identical should only work for the first
// comparison and must be disabled afterward.
theApp.m_bExitIfNoDiff = MergeCmdLineInfo::Disabled;

So I guess it's by design. The bigger question however is: "Why", and my follow-up question would be: "Wouldn't it be nice if it worked though?"