Check a .udc section multiplier against the list the file names

MultWindowType names the list N1MM validates a received section against,
and every exchange that was not all digits counted as a multiplier here.
Four of N1MM's lists are held now -- the ARRL sections, the US states,
the Canadian provinces and the 165 OK/OM districts, which came out of
N1MM's own exe -- and a file naming one of them counts only the values
on it. A file naming any of the hundred-odd others keeps the old rule.

The 2023 OK/OM DX log now scores contact for contact as N1MM did. Two
contacts in the 2026 log still differ: the district code is stored with
a trailing space, which N1MM matches against its list untrimmed, so it
counts no multiplier where this counts one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RoGtneMQaz4M9w7Kk49AVD

docs/unfinished.md

@@ -110,10 +110,15 @@ with the CW and SSB running of the contest.
 
 `.udc` settings that are still passed over. `CallHist` as a multiplier source,
 which takes the value from the call history file. `BonusPoints2`, which reads
-the bonus callsigns from a file. `MultiplierBands`, `MultWindowType` and
-`QsoErrorString`, which are about the windows rather than the score.
-`GenericPrintString`, which is the layout of a printed log rather than a
-Cabrillo one.
+the bonus callsigns from a file. `MultiplierBands` and `QsoErrorString`, which
+are about the windows rather than the score. `GenericPrintString`, which is the
+layout of a printed log rather than a Cabrillo one.
+
+`MultWindowType` is read as far as the score goes: it names the list a section
+multiplier is checked against. Four of N1MM's lists are held here — the ARRL
+sections, the US states, the Canadian provinces and the OK/OM districts — and a
+file naming any of the hundred-odd others falls back to counting any exchange
+that is not all digits.
 
 `CabrilloString` and `CabrilloVersion` are read: a contest whose sponsor asks
 for its own columns gets them, in N1MM's shape — the operator's callsign in the
@@ -140,8 +145,8 @@ a county from OK and OM stations and a serial number from everyone else — and
 of REF, ARRL 10M, the Ukrainian DX contest and the Russian DX contest, which
 are not written yet.
 
-Every contest in the station's own logs can now be opened, and all but five of
-its 78 contest instances score contact for contact as N1MM did.
+Every contest in the station's own logs can now be opened, and its 78 contest
+instances score contact for contact as N1MM did apart from the cases below.
 
 What still differs, and why:
 
@@ -158,11 +163,10 @@ What still differs, and why:
   folder the station's logs score to the contact. N1MM's OK/OM DX class is the CW running only and says so; the SSB
   running has different rules and its own pair of files, one for each side of
   the contest.
-- **A `.udc` section multiplier** is counted for any exchange that is not all
-  digits. N1MM checks it against the section list given in the file's
-  `MultWindowType` setting, and those lists are not held here, so a US state
-  sent into an OK/OM DX log counts as a multiplier here and not in N1MM. Three
-  contacts across the two logs.
+- **Two OK/OM DX contacts** whose district code was stored with a trailing
+  space. N1MM checks the code against its list without trimming it, finds
+  nothing and counts no multiplier; the code is trimmed here and counts. Both
+  contacts are the same station in the 2026 log.
 
 ## Known rough edges