diff --git a/LICENSE b/LICENSE
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+++ b/LICENSE
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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/README b/README
new file mode 100644
--- /dev/null
+++ b/README
@@ -0,0 +1,18 @@
+Umm is an extremely minimal command-line program to read a plain-text
+ledger file and report balance and other information. Although
+minimal, it aims to be able to handle multiple accounts, currencies,
+commodities, and securities. It doesn't abolutely force you to use
+double-entry bookkeeping, although it tries to make it easy to do so.
+
+Umm should have no dependencies other than a haskell compiler and
+standard libraries, although I've not tested it with anything except
+ghc. I've built it with both ghc 6.8.3 on an iMac G3 running OSX
+10.3.9 and ghc 6.10.3 on an x86 running Ubuntu. You should be able to
+build umm simply by running
+
+	cabal configure && cabal build
+
+For more information, build umm, then run "umm --help", and read the
+output of that. Arguably, that info should be in this file... later.
+Then look at the two files sample1.dat and sample2.dat; they are very
+simple examples of ledgers.
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,3 @@
+module Main where
+import Distribution.Simple
+main = defaultMain
diff --git a/UMM.cabal b/UMM.cabal
new file mode 100644
--- /dev/null
+++ b/UMM.cabal
@@ -0,0 +1,25 @@
+Name:             UMM
+Version:          0.1.0
+Homepage:         http://www.korgwal.com/umm/
+Author:           Uwe Hollerbach <uh@alumni.caltech.edu>
+Maintainer:       Uwe Hollerbach <uh@alumni.caltech.edu>
+Synopsis:         A small command-line accounting tool:
+                  hledger + bugs - features? maybe...
+Description:      This is a very minimal command-line program to read a
+                  plain-text ledger file and display balance information
+                  and other reports. I could have used hledger or ledger
+                  for this, but I had some things I wanted to do a little
+                  differently... so I did.
+License:          GPL
+License-File:     LICENSE
+Cabal-Version:    >= 1.2
+Build-Type:       Simple
+Category:         Finance
+
+Executable        umm
+  Build-Depends:  base >= 4 && < 5, haskell98, parsec, old-time
+  Main-is:        UMM.hs
+  Other-Modules:  UMMData
+                  UMMParser
+                  UMMEval
+                  UMMHelp
diff --git a/UMM.hs b/UMM.hs
new file mode 100644
--- /dev/null
+++ b/UMM.hs
@@ -0,0 +1,228 @@
+{- Copyright 2009 Uwe Hollerbach <uh@alumni.caltech.edu>
+
+This file is part of umm, Uwe's Money Manager.
+
+umm is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+umm is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+License for more details.
+
+You should have received a copy of the GNU General Public License
+along with umm; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+$Id: UMM.hs,v 1.38 2009/11/18 22:30:35 uwe Exp $ -}
+
+module Main where
+import Prelude
+import Control.Monad
+import Data.List
+import Data.Maybe
+import Data.Ratio
+import System
+import System.Exit
+import System.IO
+import System.Time
+
+import UMMHelp
+import UMMData
+import UMMParser
+import UMMEval
+
+processArgs =
+  do prog <- getProgName
+     args <- getArgs
+     now <- getClockTime >>= toCalendarTime
+     let argc = length args
+         fname = head args
+         nd = genDate now
+         cmd = if argc < 2
+                  then BalanceCmd (Name "") nd
+                  else parseUCommand nd (intercalate " " (tail args))
+     writeHdr
+     if argc < 1 || fname == "-h" || fname == "-help" || fname == "--help"
+        then putStr (usageMsg prog) >> exitWith ExitSuccess
+        else return (fname, cmd)
+
+-- A version of 'lines' which deals with all combinations of '\r' and '\n'.
+-- It drops blank lines, which is perfectly fine here, but which might be
+-- a problem elsewhere.
+
+mylines str = filter (/= "") (ml str)
+  where ml [] = []
+        ml s  = let (p, s1) = break (\c -> c == '\n' || c == '\r') s
+                in p : (if null s1 then [] else ml (tail s1))
+
+getLines fp =
+  (if fp == "-" then getContents else readFile fp) >>= (return . mylines)
+
+-- Merge explicit (ps) and implicit (qs) prices: the inputs are sorted
+-- by date, newest first, and the output is the same, preferring
+-- explicit over implicit prices in case of a date match.
+
+mergePrices [] qs = qs
+mergePrices ps [] = ps
+mergePrices pa@(p:ps) qa@(q:qs) =
+  if cmpRecDate p q == LT
+     then q : mergePrices pa qs
+     else p : mergePrices ps qa
+
+-- Find an equivalent price in the default units for a given CCS,
+-- if a suitable one can be found. If none can be found, or if the
+-- ccs is already in the default units, return Nothing.
+
+equivPrice (CCSAmount n (Amount a)) dc date ps =
+  if n == dc then Nothing else xlat ps
+  where xlat [] = Nothing
+        xlat ((PriceRec dr _ (CCSAmount nr1 (Amount ar1))
+                             (CCSAmount nr2 (Amount ar2))):ps) =
+          if compare date dr /= LT && n == nr1 && nr2 == dc
+             then Just ((CCSAmount dc (Amount (a*ar2/ar1))), dr)
+             else xlat ps
+        xlat (_:ps) = xlat ps		-- for non-PriceRec records
+
+-- Translate price if possible
+
+reprice ccs dc date prices =
+  let ep = equivPrice ccs dc date prices
+  in if isJust ep then fst (fromJust ep) else ccs
+
+-- Pretty-print accounts
+
+ppAccts es sp =
+  concat (map (ppe (sp + maximum (map (length . getN . fst) es))) es)
+  where getN (Name n) = n
+        ppe l (m,as) =
+          let isp = concat (repeat " ")
+          in zipWith gl ((take l (show m ++ isp)) : repeat (take l isp)) as
+        gl a b = concat [a, b]
+
+showPos dc da ps as = map f1 as
+  where f1 (n1,es) = (n1, if null es then ["[empty]"] else map f2 es)
+        f2 c2 =
+          let sv = show c2
+              ep = equivPrice c2 dc da ps
+              jep = fromJust ep
+              CCSAmount n (Amount a) = fst jep
+              jer = CCSAmount n (Amount (roundP 2 a))
+              sp = "\t~" ++ show jer ++ " (" ++ show (snd jep) ++ ")"
+              pad = " " ++ concat (take (18 - length sv) (repeat " "))
+          in if isJust ep then sv ++ pad ++ sp else sv
+
+selAccts names accs =
+  (if length names == 1 && head names == noName
+      then id
+      else filter (\a -> elem (fst a) names)) accs
+
+-- Round a rational number val to np decimal places
+-- This might not be ultimately exact, but it's for converted prices
+-- which might be a couple of days out of date anyway, so no big deal
+
+roundP np val =
+  if val < 0 then negate (rp np (negate val)) else rp np val
+  where rp np val =
+          let e1 = 10^(max 0 np)
+              e2 = 10*e1
+              vs = (fromInteger e2)*val
+              n = numerator vs
+              d = denominator vs
+              q1 = quot n d
+              q2 = quot (q1 + 4) 10
+          in q2 % e1
+
+-- Turn an account-group into a list of accounts. An account-group can
+-- contain (names of) other account-groups, including recursively, and
+-- loops aren't prohibited either... need to handle all those cases.
+
+expandGroup as gs ag =
+  if ag == noName || ag == todoName
+     then [ag]
+     else ff [ag] (map getRecName as) (map ggt gs) [] []
+  where ff [] _ _ am _ = am
+        ff (q:qs) as gs am ab
+          | elem q am || elem q ab  = ff qs as gs am ab
+          | elem q as               = ff qs as gs (q:am) ab
+          | isJust (lookup q gs)    = ff (qs ++ fromJust(lookup q gs))
+                                         as gs am (q:ab)
+          | otherwise               = error ("unknown account or group! "
+                                              ++ show q)
+        ggt (GroupRec n as) = (n,as)
+
+doList w dc ccs accts grps incs exps =
+  do when (chk w COLCCS)
+       (putStrLn "# Currencies, Commodities, Securities\n" >>
+        putStrLn ("# default ccs " ++ (show dc) ++ "\n") >> sh ccs)
+     when (chk w COLAccts) (putStrLn "\n# Accounts\n"    >> sh accts)
+     when (chk w COLGrps)  (putStrLn "\n# Groups\n"      >> sh grps)
+     when (chk w COLIncs)  (putStrLn "\n# Incomes\n"     >> sh incs)
+     when (chk w COLExps)  (putStrLn "\n# Expenses\n"    >> sh exps)
+  where chk w1 w2 = w1 == w2 || w1 == COLAll
+        sh = mapM_ (putStrLn . show)
+
+doBalance date names dc accts trans prices =
+  do final <- getBalances start_time date Nothing False accts trans
+     let fsel = selAccts names final
+         fp = map (\e -> reprice e dc date prices) (concat (map snd fsel))
+         gp = groupBy eqCCSAmountName (sortBy cmpCCSAmountName fp)
+         sp = filter (\e -> ccsA e /= 0) (map sumCCS gp)
+     if length names == 1 && head names == todoName
+        then putStr ""
+        else putStrLn ("Account balances as of " ++ show date) >>
+             mapM_ putStrLn (ppAccts (showPos dc date prices fsel) 8) >>
+             putStrLn ("Grand total: ~" ++ show sp)
+  where sumCCS cs =
+           CCSAmount (ccsN (head cs)) (Amount (roundP 2 (sum (map ccsA cs))))
+        ccsN (CCSAmount n _) = n
+        ccsA (CCSAmount _ (Amount a)) = a
+
+doRegister d1 d2 name dc accts trans prices dorec =
+  do final <- getBalances d1 d2 (Just name) dorec accts trans
+     putStrLn ((if dorec then "Reconciled" else "Account")
+               ++ " balance as of " ++ show d2)
+     mapM_ putStrLn (ppAccts (showPos dc d2 prices (selAccts [name] final)) 8)
+
+doChange verbose d1 d2 name dc accts trans =
+  do let aux = if notElem name (map getRecName accts)
+                  then [AccountRec name d1 ""]
+                  else []
+         trs = dropWhile (\t -> compare (getRecDate t) d1 /= GT) trans
+         mn = if verbose then Just name else Nothing
+     final <- getBalances d1 d2 mn False (aux ++ accts) trs
+     putStr "Change"
+     when (d1 /= start_time) (putStr (" from " ++ show d1))
+     putStrLn (" to " ++ show d2)
+     mapM_ putStrLn (ppAccts (showPos dc d2 [] (selAccts [name] final)) 8)
+
+main =
+  do (file, action) <- processArgs
+     recs <- getLines file >>= mapM (return . parseURecord) >>= validateRecs
+     let (dc, ccs, incs, exps, accts, grps, trans, p1) = classifyRecs recs
+     validateTransPrices ccs incs exps accts (trans ++ p1)
+     let p2 = generateImplicitPrices dc trans
+         prices = mergePrices (reverse p1) p2
+     case action of
+       ListDataCmd w ->
+         doList w dc ccs accts grps incs exps
+       BalanceCmd name date ->
+         doBalance date (expandGroup accts grps name) dc accts trans prices
+       BasisCmd name date ->
+         putStrLn "Sorry, basis command is not implemented yet!"
+       ToDoCmd date ->
+         doBalance date [todoName] dc accts trans prices
+       RegisterCmd name date1 date2 ->
+         doRegister date1 date2 name dc accts trans prices False
+       ReconcileCmd name date ->
+         doRegister start_time date name dc accts trans prices True
+       ChangeCmd verbose name date1 date2 ->
+         doChange verbose date1 date2 name dc accts trans
+       PriceCmd name date ->
+         if name == dc
+            then putStrLn ("Price of " ++ show name ++ " is always 1!")
+            else if notElem name (map getRecName ccs)
+                    then putStrLn ("Error! unknown CCS " ++ show name)
+                    else getPrices name dc date prices
diff --git a/UMMData.hs b/UMMData.hs
new file mode 100644
--- /dev/null
+++ b/UMMData.hs
@@ -0,0 +1,284 @@
+{- Copyright 2009 Uwe Hollerbach <uh@alumni.caltech.edu>
+
+This file is part of umm, Uwe's Money Manager.
+
+umm is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+umm is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+License for more details.
+
+You should have received a copy of the GNU General Public License
+along with umm; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+$Id: UMMData.hs,v 1.29 2009/11/18 22:30:36 uwe Exp $ -}
+
+module UMMData (Name(Name), Date(Date), Amount(Amount), start_time,
+                Command(BalanceCmd, RegisterCmd, ReconcileCmd, ListDataCmd,
+                ToDoCmd, PriceCmd, ChangeCmd, BasisCmd), CmdOpt(COLAll, COLCCS,
+                COLAccts, COLGrps, COLIncs, COLExps), Record(CCSRec, IncomeRec,
+                ExpenseRec, AccountRec, ToDoRec, PriceRec, XferRec, ExchRec,
+                SplitRec, GroupRec, CommentRec, ErrorRec), genDate,
+                getRecDate, cmpRecDate, getRecName, cmpRecName,
+                Ledger(Ledger), runLedger, getResult, getInfo, getErrs,
+                recordInfo, recordErr, recordNil, BSE(B,S,E),
+                CCSAmt(CCSAmount), cmpCCSAmountName, eqCCSAmountName,
+                noName, todoName, joinDrop, isLeap, validDate) where
+import Prelude
+import Data.Char
+import Data.List
+import Data.Ratio
+import System.Time
+
+-- UMM values: names, dates, amounts, records
+
+newtype Name = Name String deriving (Eq, Ord)
+instance Show Name where
+  show (Name name) = name
+
+noName = Name ""
+todoName = Name " todo "
+
+data Date = Date Int Int Int deriving (Eq)
+
+instance Show Date where
+  show (Date y m d) = show y ++ "-" ++ show2 m ++ "-" ++ show2 d
+    where show2 n = reverse (take 2 (reverse (show n) ++ "00"))
+
+instance Ord Date where
+  compare (Date y1 m1 d1) (Date y2 m2 d2) =
+    let dy = compare y1 y2
+        dm = compare m1 m2
+    in if dy /= EQ then dy else if dm /= EQ then dm else compare d1 d2
+
+genDate (CalendarTime {ctYear = y, ctMonth = m, ctDay = d}) =
+  let m2 = case m of
+             January   -> 1
+             February  -> 2
+             March     -> 3
+             April     -> 4
+             May       -> 5
+             June      -> 6
+             July      -> 7
+             August    -> 8
+             September -> 9
+             October   -> 10
+             November  -> 11
+             December  -> 12
+  in Date y m2 d
+
+start_time = Date (-4003) 10 23		-- 9 AM (GMT)
+
+newtype Amount = Amount Rational deriving (Eq, Ord)
+instance Show Amount where
+  show (Amount amt) = if amt < 0 then "-" ++ shRat (-amt) else shRat amt
+
+shRat val =
+  let n = numerator val
+      d = denominator val
+      (p2,r2) = divout d 2
+      (p5,r5) = divout r2 5
+      e10 = max p2 p5
+      vs1 = show (numerator (val * 10^e10))
+      l1 = max (length vs1) (1 + e10)
+      vs2 = take l1 (reverse vs1 ++ cycle "0")
+      vsf = reverse (take e10 vs2)
+      vsi = reverse (drop e10 vs2)
+  in if r5 == 1
+        then if e10 == 0 then show n else vsi ++ "." ++ vsf
+        else show n ++ "/" ++ show d
+
+divout n q = doit 0 n
+  where doit e v = if rem v q == 0 then doit (e + 1) (quot v q) else (e,v)
+
+data CCSAmt = CCSAmount Name Amount
+instance Show CCSAmt where
+  show (CCSAmount name amount) = joinDrop [show amount, show name]
+
+-- Compare two CCSAmounts by name
+
+cmpCCSAmountName (CCSAmount n1 _) (CCSAmount n2 _) = compare n1 n2
+eqCCSAmountName (CCSAmount n1 _) (CCSAmount n2 _) = n1 == n2
+
+data CmdOpt = COLAll
+            | COLCCS
+            | COLAccts
+            | COLGrps
+            | COLIncs
+            | COLExps
+  deriving (Eq)
+
+instance Show CmdOpt where
+  show COLAll = "all"
+  show COLCCS = "ccs"
+  show COLAccts = "accounts"
+  show COLGrps = "groups"
+  show COLIncs = "incomes"
+  show COLExps = "expenses"
+
+data Command = ListDataCmd CmdOpt
+             | ToDoCmd Date
+             | BalanceCmd Name Date
+             | BasisCmd Name Date
+             | RegisterCmd Name Date Date
+             | ReconcileCmd Name Date
+             | PriceCmd Name Date
+             | ChangeCmd Bool Name Date Date
+
+instance Show Command where
+  show (ListDataCmd opt) = joinDrop ["list", show opt]
+  show (ToDoCmd date) = joinDrop ["todo", show date]
+  show (PriceCmd name date) = joinDrop ["price", show name, show date]
+  show (BalanceCmd name date) = joinDrop ["balance", show name, show date]
+  show (BasisCmd name date) = joinDrop ["basis", show name, show date]
+  show (RegisterCmd name date1 date2) =
+    joinDrop ["register", show name, show date1, show date2]
+  show (ReconcileCmd name date) = joinDrop ["reconcile", show name, show date]
+  show (ChangeCmd verbose name date1 date2) =
+    joinDrop ["change", (if verbose then "verbose" else ""),
+              show name, show date1, show date2]
+
+-- No, not bovine spongiform encephalitis! Disambiguate buy, sell, and
+-- exch records: internally, they are all treated as exch, because
+-- that makes the code simple, but the user can enter "buy" or "sell",
+-- and it seems only polite to echo that back on output.
+
+data BSE = B | S | E deriving (Eq)
+
+instance Show BSE where
+  show B = "buy"
+  show S = "sell"
+  show E = "exch"
+
+data Record = CCSRec Name String
+            | IncomeRec Name String
+            | ExpenseRec Name String
+            | AccountRec Name Date String
+            | GroupRec Name [Name]
+            | PriceRec Date Bool CCSAmt CCSAmt
+            | XferRec Date Bool Name Name CCSAmt String Int
+            | ExchRec BSE Date Bool Name CCSAmt CCSAmt String
+            | SplitRec Date Name Amount Amount
+            | CommentRec String
+            | ToDoRec Date Bool String
+            | ErrorRec String
+
+instance Show Record where
+  show = showR
+
+-- We use "show str" here to add quotes and escape any escapables
+
+optStr str = if str == "" then "" else show str
+
+shRec rec = if rec then "*" else ""
+
+joinDrop ss = intercalate " " (filter (\s -> s /= "") ss)
+
+showR (CCSRec n d) = joinDrop ["ccs", show n, optStr d]
+showR (IncomeRec n d) = joinDrop ["income", show n, optStr d]
+showR (ExpenseRec n d) = joinDrop ["expense", show n, optStr d]
+showR (AccountRec n da de) = joinDrop ["account", show n, show da, optStr de]
+showR (GroupRec n as) = joinDrop (["group", show n] ++ map show as)
+showR (PriceRec d imp c1 c2) =
+  joinDrop ["price", shRec imp, show d, show c1, show c2]
+
+showR (XferRec d r a1 a2 c memo chknum) =
+  joinDrop ["xfer", shRec r, show d, show a1, show a2,
+            show c, optStr memo, (if chknum == 0 then "" else show chknum)]
+
+showR (ExchRec t d r a c1 c2 memo) =
+  let hs = if t == S then [show c2, show c1] else [show c1, show c2]
+  in joinDrop ([show t, shRec r, show d, show a] ++ hs ++ [optStr memo])
+
+showR (SplitRec d n a1 a2) =
+  joinDrop ["split", show d, show n, show a1, show a2]
+
+showR (CommentRec c) = if c == "" then "" else joinDrop ["#", c]
+
+showR (ToDoRec d r memo) =
+  joinDrop ["todo", shRec r, show d,
+            (if memo == "" then "something! but what?" else memo)]
+
+showR (ErrorRec str) = joinDrop ["#err", str]
+
+-- Get the date (or at any rate /some/ date) from a Record
+
+getRecDate (AccountRec _ d _) =      d
+getRecDate (PriceRec d _ _ _) =      d
+getRecDate (XferRec d _ _ _ _ _ _) = d
+getRecDate (ExchRec _ d _ _ _ _ _) = d
+getRecDate (SplitRec d _ _ _) =      d
+getRecDate (ToDoRec d _ _) =         d
+getRecDate _ = start_time	-- so it works for every Record
+
+-- Get the name (or at any rate /some/ name) from a Record
+
+getRecName (CCSRec n _) =       n
+getRecName (IncomeRec n _) =    n
+getRecName (ExpenseRec n _) =   n
+getRecName (AccountRec n _ _) = n
+getRecName (GroupRec n _) =     n
+getRecName _ = Name " nil "	-- so it works for every Record
+
+-- Compare two Records by date
+
+cmpRecDate v1 v2 = compare (getRecDate v1) (getRecDate v2)
+
+-- Compare two Records by name
+
+cmpRecName v1 v2 = compare (getRecName v1) (getRecName v2)
+
+-- Ledger monad: essentially a parametrized bi-level version of the Logger
+-- monad from RWH. The first component of the tuple is "the final result",
+-- whatever that may be, the second component is a list of ordinary bits
+-- of information, and the third component is a list of extraordinary bits
+-- of information, aka errors.
+
+newtype Ledger e i r = Ledger (r, [i], [e]) deriving (Show)
+
+runLedger (Ledger a) = a
+getResult (Ledger (r,_,_)) = r
+getInfo   (Ledger (_,i,_)) = i
+getErrs   (Ledger (_,_,e)) = e
+
+-- Record a message
+
+recordInfo i = Ledger ((), [i], [])
+
+-- Record an error
+
+recordErr e = Ledger ((), [], [e])
+
+-- Record nothing: a placeholder for conditionals:
+-- if someCond then recordErr "someErr" else recordNil
+
+recordNil = Ledger ((), [], [])
+
+-- Note that because we use append (++) for lists here, this is fairly
+-- low-performance: it's entirely ok for this application, where we
+-- toss around a few to a few thousand list entries, but for longer
+-- lists it might not be suitable. <shrug>
+
+instance Monad (Ledger e i) where
+  return a = Ledger (a, [], [])
+  (>>=) m k =
+    let (a,li1,le1) = runLedger m
+        n = k a
+        (b,li2,le2) = runLedger n
+    in Ledger (b, li1 ++ li2, le1 ++ le2)
+  (>>) a f = a >>= \_ -> f
+
+-- Some miscellany
+
+-- divisible by 4 except if divisible by 100 except if divisible by 400
+isLeap y = rem y 4 == 0 && (rem y 100 /= 0 || rem y 400 == 0)
+
+validDate (Date y m d) =
+  let lim = [ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ] !! m
+  in (m >= 1 && m <= 12 && d >= 1 &&
+       (d <= lim || m == 2 && isLeap y && d <= 29))
diff --git a/UMMEval.hs b/UMMEval.hs
new file mode 100644
--- /dev/null
+++ b/UMMEval.hs
@@ -0,0 +1,255 @@
+{- Copyright 2009 Uwe Hollerbach <uh@alumni.caltech.edu>
+
+This file is part of umm, Uwe's Money Manager.
+
+umm is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+umm is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+License for more details.
+
+You should have received a copy of the GNU General Public License
+along with umm; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+$Id: UMMEval.hs,v 1.23 2009/11/18 22:30:36 uwe Exp $ -}
+
+module UMMEval (validateRecs, classifyRecs, validateTransPrices,
+                generateImplicitPrices, getBalances, getPrices) where
+import Prelude
+import Data.List
+import Data.Maybe
+import System.IO
+import Control.Monad
+
+import UMMData
+
+-- Initial validation of records: filter out comments, highlight parse
+-- errors, and check that dates are valid. This is kind of a trivial
+-- use of runLedger, it could almost be accomplished by partition.
+
+validateRecs records =
+  do let (_,i,e) = runLedger (chk records)
+     if length e == 0
+        then return i
+        else hPutStrLn stderr "There were parse or date errors in the input:"
+             >> mapM_ (hPutStrLn stderr . show) e
+             >> error "quitting now"
+  where chk [] = return ()
+        chk (r@(ErrorRec _):rs) = recordErr r >> chk rs
+        chk ((CommentRec _):rs) = chk rs
+        chk (r:rs) =
+            (if validDate (getRecDate r) then recordInfo else recordErr) r
+            >> chk rs
+
+-- Classify records by type and sort accounts and
+-- transaction-type records by date or name as needed
+
+uErr v1 v2 =
+  error ("duplicate records\n  " ++ show v1 ++ "\n  " ++ show v2)
+
+uChk [] = []
+uChk s@(_:[]) = s
+uChk v@(v1:v2:[]) =
+  if getRecName v1 == getRecName v2 then uErr v1 v2 else v
+uChk (v1:v2:vs) =
+  if getRecName v1 == getRecName v2 then uErr v1 v2 else v1 : uChk (v2:vs)
+
+-- TODO: should really check that there are no duplications among
+-- account names and account group names together, rather than
+-- separately (or just account groups, right now)
+
+classifyRecs recs = cw recs [] [] [] [] [] [] []
+  where cw [] c i e a g t p =
+          let dc = if null c then Name "zorkmid" else getRecName (last c)
+          in (dc, vsN c, vsN i, vsN e, reverse a, vsN g, asD dc t, asD dc p)
+        cw (r:rs) c i e a g t p =
+          case r of
+            CommentRec _     -> cw rs c i e a g t p
+            CCSRec _ _       -> cw rs (r:c) i e a g t p
+            IncomeRec _ _    -> cw rs c (r:i) e a g t p
+            ExpenseRec _ _   -> cw rs c i (r:e) a g t p
+            AccountRec _ _ _ -> cw rs c i e (r:a) g t p
+            GroupRec _ _     -> cw rs c i e a (r:g) t p
+            PriceRec _ _ _ _ -> cw rs c i e a g t (r:p)
+            _                -> cw rs c i e a g (r:t) p
+        vsN rs = uChk (sortBy cmpRecName rs)
+        asD dc rs = sortBy cmpRecDate (reverse (map (addDC dc) rs))
+        addDC dc (PriceRec d imp ccsa1 ccsa2) =
+          PriceRec d imp ccsa1 (addDCCA dc ccsa2)
+        addDC dc (XferRec d f a1 a2 ccsa m c) =
+          XferRec d f a1 a2 (addDCCA dc ccsa) m c
+        addDC dc (ExchRec t d f acc ccsa1 ccsa2 m) =
+          ExchRec t d f acc (addDCCA dc ccsa1) (addDCCA dc ccsa2) m
+        addDC _ r = r
+        addDCCA dc c@(CCSAmount n a) =
+          if n == noName then CCSAmount dc a else c
+
+-- Second validation of transactions: check that all from & to accounts
+-- are valid, that splits aren't 1/0 or 0/1, etc
+
+-- TODO: if we want to give a reason for each failure, run this
+-- through runLedger as above? then we could generate multiple output
+-- records for (some of) each input record
+
+validateTransPrices ccs incs exps accts tps =
+  do let bads = filter chk tps
+     when (length bads > 0)
+          (hPutStrLn stderr "There were bad transactions in the input:"
+           >> mapM_ (hPutStrLn stderr . show) bads >> error "quitting now")
+  where chk (SplitRec _ c (Amount amt1) (Amount amt2)) =
+            amt1 == 0 || amt2 == 0 || notIn c ccs
+        chk (PriceRec _ _ (CCSAmount c1 amt1) (CCSAmount c2 _)) =
+            amt1 == Amount 0 || notIn c1 ccs || notIn c2 ccs
+        chk (XferRec _ _  af at (CCSAmount n _) _ _) =
+            (notIn af incs && notIn af accts) ||
+            (notIn at exps && notIn at accts) ||
+            notIn n ccs
+        chk (ExchRec _ _ _ a (CCSAmount c1 _) (CCSAmount c2 _) _) =
+            notIn a accts || notIn c1 ccs || notIn c2 ccs
+        chk (ToDoRec _ _ _) = False
+        chk _ = True
+        notIn _ [] = True
+        notIn s (r:rs) = s /= getRecName r && notIn s rs
+
+-- Generate implicit price/date information from buy and sell transactions;
+-- presumably, these will have taken place at market price, which is what we
+-- want. Only generate info for transactions involving the default currency,
+-- other stuff is too hard to untangle at least for now.
+
+generateImplicitPrices dc trs = gip [] trs
+  where gip acc [] = filter pr acc
+        gip acc (t@(ExchRec _ _ _ _ _ _ _):ts) = gip ((genp t) : acc) ts
+        gip acc (_:ts) = gip acc ts
+        genp (ExchRec _ date _ _ (CCSAmount n1 a1) (CCSAmount n2 a2) _)
+          | n1 == dc   = PriceRec date True (nC n2 a2 a2) (nC n1 a1 a2)
+          | n2 == dc   = PriceRec date True (nC n1 a1 a1) (nC n2 a2 a1)
+          | otherwise  = CommentRec "general exchange, no price generated"
+        pr (PriceRec _ _ _ _) = True
+        pr _ = False
+        nC n (Amount a1) (Amount a2) =
+          CCSAmount n (Amount (if a2 == 0 then a1 else a1/a2))
+
+getCN (CCSAmount n _) = n
+getCA (CCSAmount _ (Amount a)) = a
+
+addTo [] n = [n]
+addTo (q:qs) d =
+  let qn = getCN q
+      qq = getCA q
+      dn = getCN d
+      dq = getCA d
+      nq = qq + dq
+  in if qn == dn
+        then if nq == 0
+                then qs
+                else (CCSAmount qn (Amount nq)) : qs
+        else q : addTo qs d
+
+subFrom acc d = addTo acc (CCSAmount (getCN d) (Amount (-(getCA d))))
+
+scaleBy qs d = map (s1 (getCN d) (getCA d)) qs
+  where s1 dn dq q =
+          let qn = getCN q
+              qq = getCA q
+          in if qn == dn then (CCSAmount qn (Amount (qq * dq))) else q
+
+maybeRecord reg record newaccs tst =
+  let isJ = isJust reg
+      rn = fromJust reg
+      acc = filter (\a -> fst a == rn) newaccs
+      nb = if length acc > 0
+              then snd (head acc)
+              else [CCSAmount noName (Amount 0)]
+  in if isJ && (tst rn || rn == noName)
+        then recordInfo (record, nb)
+        else recordNil
+
+maybeDo reg dorec record isrec accs newaccs tst =
+  if dorec
+     then if isrec
+             then return newaccs
+             else maybeRecord reg record newaccs tst >> return accs
+     else maybeRecord reg record newaccs tst >> return newaccs
+
+exchTrans reg dorec record@(ExchRec _ _ isrec acc amtn amto _) accs =
+  maybeDo reg dorec record isrec accs
+          (doExch accs acc amtn amto) (\rn -> rn == acc)
+  where doExch [] _ _ _ = []
+        doExch ((an,ab):as) n en eo =
+          if an == n
+             then (an, subFrom (addTo ab en) eo) : as
+             else (an,ab) : doExch as n en eo
+
+xferTrans reg dorec record@(XferRec _ isrec from to amt _ _) accs =
+  maybeDo reg dorec record isrec accs
+          (doXfer accs from to amt) (\rn -> rn == from || rn == to)
+  where doXfer [] _ _ _ = []
+        doXfer (a@(an,ab):as) nf nt e
+          | an == nf    = (an, subFrom ab e) : doXfer as nf nt e
+          | an == nt    = (an, addTo ab e) : doXfer as nf nt e
+          | otherwise   = a : doXfer as nf nt e
+
+-- TODO: look into account and see if split is applicable? yeah... cleaner
+-- Also: does maybeDo apply here, too? I think probably it should...
+-- but is this a reconcilable transaction? It reaches across accounts,
+-- so maybe not
+
+splitTrans reg record@(SplitRec _ ccs (Amount an) (Amount ao)) acc =
+  let newaccs = map doST acc
+  in maybeRecord reg record newaccs (\_ -> True) >> return newaccs
+  where doST (a1,a2) = (a1, scaleBy a2 (CCSAmount ccs (Amount (an/ao))))
+
+mkInit as = return (map (\a -> (getRecName a, [])) as)
+
+appTr _ _ _ [] as = return as
+appTr d r f (t:ts) as =
+  if getRecDate t > d
+     then return as
+     else case t of
+            XferRec _ _ _ _ _ _ _ -> xferTrans r f t as >>= appTr d r f ts
+            ExchRec _ _ _ _ _ _ _ -> exchTrans r f t as >>= appTr d r f ts
+            SplitRec _ _ _ _  -> splitTrans r t as >>= appTr d r f ts
+            ToDoRec _ isrec _ ->
+              (if isrec then recordNil else recordInfo (t,[]))
+                >> appTr d r f ts as
+            _ -> recordErr t >> appTr d r f ts as
+
+showT (t,_) = putStrLn (show t)
+
+showTB e@(_,b) = showT e >> mapM_ sB b
+  where sB ccsa = putStrLn ("\t" ++ show ccsa)
+
+getBalances date1 date2 reg dorec accts trans =
+  do let (r,i1,e) = runLedger (mkInit accts >>= appTr date2 reg dorec trans)
+         i = dropWhile (\t -> compare (getRecDate (fst t)) date1 == LT) i1
+         ss = if dorec then showT else showTB
+     when (length e > 0)
+          (hPutStrLn stderr "There were parse or date errors in the input:"
+           >> mapM_ (hPutStrLn stderr . show) e >> error "quitting now")
+     when (length i > 0) (putStrLn "Notes:" >> mapM_ ss i >> putStrLn "")
+     return r
+
+-- For now, we don't generate "swap prices" internally, so unless the user
+-- enters some, we won't see any; see also generateImplicitPrices above.
+
+getPrices nm dc date prices =
+  do let p1 = dropWhile (\t -> compare date (getRecDate t) == LT) prices
+         (_,i,e) = runLedger (get p1)
+     when (length e > 0) (doShow "Swap \"Prices\"" e >> putStrLn "")
+     when (length i > 0) (doShow "Ordinary Prices" i)
+     when (length e == 0 && length i == 0)
+          (putStrLn ("No prices known for " ++ show nm))
+  where get [] = return ()
+        get (p@(PriceRec _ _ (CCSAmount nr1 _) (CCSAmount nr2 _)):ps) =
+          if (nr1 == nm && nr2 == dc) || (nr1 == dc && nr2 == nm)
+             then recordInfo p >> get ps
+             else if (nr1 == nm || nr2 == nm)
+                     then recordErr p >> get ps
+                     else get ps
+        get _ = recordNil
+        doShow t p = putStrLn t >> mapM_ (putStrLn . show) (reverse p)
diff --git a/UMMHelp.hs b/UMMHelp.hs
new file mode 100644
--- /dev/null
+++ b/UMMHelp.hs
@@ -0,0 +1,352 @@
+{- Copyright 2009 Uwe Hollerbach <uh@alumni.caltech.edu>
+
+This file is part of umm, Uwe's Money Manager.
+
+umm is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+umm is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+License for more details.
+
+You should have received a copy of the GNU General Public License
+along with umm; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+$Id: UMMHelp.hs,v 1.14 2009/11/18 19:58:47 uwe Exp $ -}
+
+module UMMHelp (writeHdr, usageMsg) where
+import Prelude
+
+version = "0.1.0"
+
+writeHdr =
+  putStrLn
+    ("Uwe's Money Manager -- umm " ++ version ++
+     "\nCopyright 2009 Uwe Hollerbach <uh@alumni.caltech.edu>\n" ++
+     "Available under GPL V3 or later. Share and enjoy!\n" ++
+     "http://www.korgwal.com/umm/\n")
+
+-- TODO: store these unadorned in some separate text files, and use
+-- a program (Template Haskell?) to turn them into proper source code
+
+usageMsg prog =
+  "usage is '" ++ prog ++ " <ledger-file> <command> <options>'\n" ++
+  "where <command> and <options> can be any of the following:\n" ++
+  "\n" ++
+  "    'balance' [account-or-group] [date]\n" ++
+  "    'change' acc-or-inc-or-exp [date] [date]\n" ++
+  "    'list' ['all' | 'accounts' | 'ccs' | 'expenses' | 'incomes' | 'groups']\n" ++
+  "    'price' ccs [date]\n" ++
+  "    'register' account [date] [date]\n" ++
+  "    'reconcile' [account] [date]\n" ++
+  "    'todo' [date]\n" ++
+  "    'basis' ccs [date]\n" ++
+  "\n" ++
+  "The commands may be shortened to the unique prefixes or anything\n" ++
+  "longer: 'b', 'ba', 'bala' etc, 'reg', 'regi' etc, but not 'r'.\n" ++
+  "If no command or options are specified, the default action is\n" ++
+  "to show the balances of all accounts as of the current date.\n" ++
+  "\n" ++
+  "'account' is the name of an account; see the description of 'name'\n" ++
+  "below for more details of formatting. Likewise, 'account-or-group'\n" ++
+  "is the name of an account or an account group, and 'acc-or-inc-or-exp'\n" ++
+  "is the name of an account or an income or expense pseudo-account.\n" ++
+  "\n" ++
+  "'ccs' is the name of a currency, commodity, or security; again, see\n" ++
+  "the description of 'name' below for more details of formatting.\n" ++
+  "\n" ++
+  "'date' defaults to the current date if not specified; again, see\n" ++
+  "below for details of formatting.\n" ++
+  "\n" ++
+  "--------\n" ++
+  "\n" ++
+  "* 'balance' shows the balance in the specified account or group,\n" ++
+  "  or in all accounts if none is specified, as of the given date.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'price' shows the price history of the specified currency, commodity,\n" ++
+  "  or security, up to the specified date.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'change' shows the change in the specified account or pseudo-account\n" ++
+  "  between the two given dates, or from the beginning of the ledger to\n" ++
+  "  the specified date.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'price' shows the price history of the specified currency,\n" ++
+  "  commodity, or security, up to the specified date.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'register' shows all transactions involving the specified\n" ++
+  "  account up to the given date, and shows the balance as of\n" ++
+  "  that date.\n" ++
+  "\n" ++
+  "  If 'register' is given two dates, it prints transactions from\n" ++
+  "  the earlier to the later date.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'reconcile' applies all reconciled transactions up to the\n" ++
+  "  given date, shows relevant unreconciled transactions up to\n" ++
+  "  that date, and shows the reconciled balance(s) as of that\n" ++
+  "  date.\n" ++
+  "\n" ++
+  "  If 'reconcile' is given an account, then only unreconciled\n" ++
+  "  transactions involving that account are shown, otherwise all\n" ++
+  "  unreconciled transactions are shown\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'todo' shows all the unreconciled 'todo' items in the ledger\n" ++
+  "  up to the date specified, defaulting to the current date\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'list' shows summaries of the various kinds of non-transaction\n" ++
+  "  entries in the ledger file: currencies/commodities/securities,\n" ++
+  "  income and expense categories, accounts, and groups\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'basis' will eventually show the cost basis for a given currency\n" ++
+  "  or commodity or security. It is not yet implemented.\n" ++
+  "\n" ++
+  "--------\n" ++
+  "\n" ++
+  "There are several kinds of records in a ledger file:\n" ++
+  "\n" ++
+  "    'ccs' name [desc]\n" ++
+  "    'income' name [desc]\n" ++
+  "    'expense' name [desc]\n" ++
+  "    'account' name date [desc]\n" ++
+  "    'group' name [name...]\n" ++
+  "    'price' date [amount1] name1 amount2 [name2]\n" ++
+  "    'split' date name amount1 amount2\n" ++
+  "    'todo' [rec] date text\n" ++
+  "    'xfer' [rec] date name1 name2 amount [name] [desc] [id]\n" ++
+  "    'exch' [rec] date name amount1 name1 amount2 [name2] [desc]\n" ++
+  "\n" ++
+  "There are also 'buy' and 'sell' records which are just\n" ++
+  "syntactic sugar for 'exch'; see more details below in the\n" ++
+  "section describing the meaning of each type of record. The\n" ++
+  "individual fields for each record are separated by whitespace.\n" ++
+  "\n" ++
+  "Blank lines or lines whose first non-blank character is '#'\n" ++
+  "are treated as comments and are ignored.\n" ++
+  "\n" ++
+  "Syntactically, all of these are optional: there are no\n" ++
+  "required records, and an empty ledger file is syntactically\n" ++
+  "legal. However, a minimally-useful ledger file will probably\n" ++
+  "contain at least some 'xfer' records, which in turn require\n" ++
+  "that there be at least a couple of 'account' or 'income' or\n" ++
+  "'expense' records.\n" ++
+  "\n" ++
+  "The order of records in the ledger file is not significant;\n" ++
+  "the program orders them by type and date, and applies\n" ++
+  "transactions in order by date.\n" ++
+  "\n" ++
+  "\n" ++
+  "The meaning of each record type is as follows:\n" ++
+  "\n" ++
+  "* 'ccs name [desc]' describes a currency or commodity or\n" ++
+  "  security: the things you want to keep track of. The first\n" ++
+  "  ccs record in the ledger file is the default unit; my ledger\n" ++
+  "  file has 'ccs US$' very near the top. However, you don't\n" ++
+  "  need one, in which case the program computes in Zorkmid\n" ++
+  "  ('zm'). If you don't enter any 'ccs' record, you can't\n" ++
+  "  specify any units in 'xfer' records, and you can't use any\n" ++
+  "  'price' or 'split' records. You can use 'exch' (and 'buy'\n" ++
+  "  and 'sell') records, but they probably won't be very useful,\n" ++
+  "  since all you can do is to trade one amount of Zorkmids for\n" ++
+  "  another. The 'desc' field in a ccs record is currently just\n" ++
+  "  for documentation, it's not used by the program.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'account name date [desc]' records specify accounts where you\n" ++
+  "  want to keep of the quantity of what's in the account as well\n" ++
+  "  as transactions which move stuff into or out of the account.\n" ++
+  "  An account can contain multiple types of ccs, for example a\n" ++
+  "  single account could be used to describe a brokerage account\n" ++
+  "  containing many securities as well as cash. The date and desc\n" ++
+  "  fields are currently just for documentation and are not used\n" ++
+  "  by the program.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'group name [name...]' groups multiple accounts together into one\n" ++
+  "  group, so that it's possible to query the balances for a group of\n" ++
+  "  accounts as a whole.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'income name [desc]' and 'expense name [desc]' records specify\n" ++
+  "  pseudo-accounts where you don't want to keep track of what's\n" ++
+  "  inside, just the transactions: think of these as categories.\n" ++
+  "  'income' specifies a source of ccs, and 'expense' specifies a\n" ++
+  "  destination or sink. The desc field is currently just for\n" ++
+  "  documentation. You can, to some extent, circumvent the source\n" ++
+  "  or sink nature by entering a transaction from a source to an\n" ++
+  "  account, but with a negative amount: this would actually take\n" ++
+  "  money out of the account. This is intended for VERY OCCASIONAL\n" ++
+  "  overrides, say you overpaid a utility bill and get a credit\n" ++
+  "  which you don't want to just apply to the next bill. Don't\n" ++
+  "  abuse this!\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'price date [amount1] name1 amount2 [name2]' records are\n" ++
+  "  used to specify the price of one ccs in terms of another;\n" ++
+  "  usually a currency. If the first amount is not specified,\n" ++
+  "  it defaults to 1, and if the second name is not specified,\n" ++
+  "  it defaults to the default ccs. For example, if you are\n" ++
+  "  tracking ounces of gold using the ccs name 'Au', you might\n" ++
+  "  have a price record\n" ++
+  "\n" ++
+  "        price 2009-10-21 Au 1063.70\n" ++
+  "\n" ++
+  "  and if you track ounces but for some reason have a price quote\n" ++
+  "  in grams, you might write\n" ++
+  "\n" ++
+  "        price 2009-10-21 0.03215075 Au 34.19875 US$\n" ++
+  "\n" ++
+  "  'name1' (and 'name2', if specified) must be specified in the\n" ++
+  "  ledger by 'ccs' records.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'split date name amount1 amount2' records are used to specify\n" ++
+  "  stock splits: 'name' is the name of the security being split,\n" ++
+  "  which must be specified in the ledger by a 'ccs' record, 'date'\n" ++
+  "  is the date of the split, and 'amount1' and 'amount2' are the\n" ++
+  "  new and old numbers of shares, respectively. In the markets,\n" ++
+  "  these are usually integers, but the program does not require\n" ++
+  "  this. For example, General Electric did a 3:1 stock split on\n" ++
+  "  May 8, 2000, which could be specified as\n" ++
+  "\n" ++
+  "        split 2000-5-8 GE 3 1\n" ++
+  "\n" ++
+  "  but if you're feeling perverse you could also write any of\n" ++
+  "\n" ++
+  "        split 2000-5-8 GE 1 1/3\n" ++
+  "        split 2000-5-8 GE 1.5 0.5\n" ++
+  "        split 2000-5-8 GE 15/7 5/7\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'xfer [rec] date name1 name2 amount [name] [desc] [id]'\n" ++
+  "  records are used to transfer 'amount' of 'name' from account\n" ++
+  "  'name1' to account 'name2'; 'name1' may be either an account\n" ++
+  "  specified by an 'account' record, or a source specified by\n" ++
+  "  an 'income' record. If you don't specify the name of what's\n" ++
+  "  being transferred, the program assumes it's the default ccs,\n" ++
+  "  US$ or Zorkmids or whatever. For example, this record from my\n" ++
+  "  ledger file\n" ++
+  "\n" ++
+  "        xfer* 2009/2/27 interest abc:savings 0.01\n" ++
+  "\n" ++
+  "  says that on February 27, 2009, one penny interest was credited\n" ++
+  "  to my ABC Bank savings account, and this record\n" ++
+  "\n" ++
+  "        xfer* 2009/9/26 checking utility:water 43.99 1216\n" ++
+  "\n" ++
+  "  is the payment of my water bill, in the amount of US$ 43.99,\n" ++
+  "  with check #1216.\n" ++
+  "\n" ++
+  "  Both of these are marked as reconciled; this affects only\n" ++
+  "  the 'reconcile' command: when that command is run, reconciled\n" ++
+  "  transactions are included in the reconciled balance and are\n" ++
+  "  not printed, whereas not-reconciled transactions are printed\n" ++
+  "  but not included in the reconciled balance.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'exch [rec] date name amount1 name1 amount2 [name2] [desc]'\n" ++
+  "  records and their aliases 'buy and 'sell' are used to trade\n" ++
+  "  some amount of one ccs for another. To some extent, these\n" ++
+  "  are syntactic sugar: the same could be accomplished with a\n" ++
+  "  pair of 'xfer' records, but this is a little clearer and\n" ++
+  "  less error-prone. In 'exch' and 'buy' records,\n" ++
+  "  (amount1,name1) is the new quantity coming into the account\n" ++
+  "  named 'name', and (amount2,name2) is the quantity leaving\n" ++
+  "  the account; for example\n" ++
+  "\n" ++
+  "        exch 2009-7-10 brokerage 300 MTLQQ.PK 300 GM \"rename GM\"\n" ++
+  "\n" ++
+  "  might be an entry describing the name change of GM shares\n" ++
+  "  when GM went through bankruptcy (I'm not sure of the date though,\n" ++
+  "  and in any case shareholders of \"old GM\" wouldn't simply\n" ++
+  "  get shares of \"new GM\"... but ignore that), and\n" ++
+  "\n" ++
+  "        buy 2009/10/2 brokerage 3.959 VTSMX 100\n" ++
+  "\n" ++
+  "  might be an entry describing a regular automatic purchase of\n" ++
+  "  VTSMX. For 'sell' records, the order is reversed: the first\n" ++
+  "  pair (amount1,name1) describes what's being sold, ie, going\n" ++
+  "  out of the account, and the second pair (amount2,name2) shows\n" ++
+  "  what's being acquired in exchange. Thus\n" ++
+  "\n" ++
+  "        sell 2009/10/2 brokerage 3.959 VTSMX 100\n" ++
+  "\n" ++
+  "  would undo the previous 'buy' transaction. These could both be\n" ++
+  "  written as 'exch' instead, as follows; I've added the explicit\n" ++
+  "  specifier of US$.\n" ++
+  "\n" ++
+  "        exch 2009/10/2 brokerage 3.959 VTSMX 100 US$\n" ++
+  "        exch 2009/10/2 brokerage 100 US$ 3.959 VTSMX\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'todo [rec] date text' is basically a sticky note in the\n" ++
+  "  ledger. If the record is not marked as reconciled, and the\n" ++
+  "  date falls within the range of the command being executed,\n" ++
+  "  the text is printed out. If the record is marked as\n" ++
+  "  reconciled, the text is not printed out; the record merely\n" ++
+  "  serves as a comment in the ledger. This is for leaving\n" ++
+  "  yourself reminders of stuff that needs to be done at some\n" ++
+  "  time: for example, my ledger file has entries\n" ++
+  "\n" ++
+  "        todo 2009/12/1 Start actively gathering tax info\n" ++
+  "        todo 2010/4/10 Taxes better be done!!!\n" ++
+  "\n" ++
+  "  yet I won't be bothered by seeing these until those dates\n" ++
+  "  have passed (or if I do a query for some time in the future).\n" ++
+  "\n" ++
+  "\n" ++
+  "In the above:\n" ++
+  "\n" ++
+  "* 'name' is a sequence of non-blank characters whose first\n" ++
+  "  character is a letter and whose remaining characters are\n" ++
+  "  letters or digits or symbols from the set !$%&*+-/:<=>?@^_~\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'date' is a date formatted as Y/M/D or Y-M-D, where no\n" ++
+  "  assumptions are made about implicit century years etc:\n" ++
+  "  what you enter is what's there, so 98-1-27, for example,\n" ++
+  "  is a date describing the death of the roman emperor Nerva\n" ++
+  "  and the beginning of the reign of his successor Trajan,\n" ++
+  "  not January 27, 1998. The program knows that there are\n" ++
+  "  12 months in a year, and how many days there are in each\n" ++
+  "  month (including leap years, for which it assumes the use\n" ++
+  "  of the proleptic Gregorian calendar), and it checks these\n" ++
+  "  for validity; it makes no assumptions about the validity\n" ++
+  "  of the year. Years BC cannot be entered... this is probably\n" ++
+  "  not a significant limitation.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'desc' is an arbitrary string enclosed in double quotes:\n" ++
+  "  \"a string\". It may contain embedded escaped characters\n" ++
+  "  and escaped quotes, using a back-slash for escaping:\n" ++
+  "  \"this is a\\\" string with \\n embedded quote and newline\".\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'amount' is a rational number formatted in one of several\n" ++
+  "  ways: one or more digits, possibly followed by a decimal\n" ++
+  "  point '.' and zero or more digits ('\\d+(\\.\\d*)?' in perl\n" ++
+  "  regexp-speak), or a decimal point '.' followed by one or\n" ++
+  "  more digits ('\\.\\d+'), or two sequences of one or more\n" ++
+  "  digits each separated by '/' ('\\d+\\/\\d+'). In all cases,\n" ++
+  "  an optional sign, '+' or '-', may precede the rational\n" ++
+  "  number.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'rec' is a reconciliation mark: an asterisk '*'. It may\n" ++
+  "  immediately follow the record type, or it may be separated\n" ++
+  "  from the record type by whitespace: ie, both 'todo*' and\n" ++
+  "  'todo *' are legal.\n" ++
+  "\n" ++
+  "\n" ++
+  "* 'id' (in an 'xfer' record) is a sequence of digits: a\n" ++
+  "  check number or other identifying number."
diff --git a/UMMParser.hs b/UMMParser.hs
new file mode 100644
--- /dev/null
+++ b/UMMParser.hs
@@ -0,0 +1,347 @@
+{- Copyright 2009 Uwe Hollerbach <uh@alumni.caltech.edu>
+
+This file is part of umm, Uwe's Money Manager.
+
+umm is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+umm is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+License for more details.
+
+You should have received a copy of the GNU General Public License
+along with umm; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+$Id: UMMParser.hs,v 1.28 2009/11/14 22:41:36 uwe Exp $ -}
+
+-- TODO: template := <to be determined>
+
+module UMMParser (parseURecord, parseUDate, parseUCommand) where
+import Prelude
+import Data.Char
+import Data.Ratio
+import Text.ParserCombinators.Parsec as TPCP hiding (spaces)
+
+import UMMData
+
+readInt s = foldl ma 0 s
+  where ma v1 v2 = 10*v1 + (toInteger (digitToInt v2))
+
+readAmt ip fp =
+  let l = length fp
+      e = 10^l
+      iv = readInt ip
+      fv = readInt fp
+  in (e*iv + fv) % e
+
+trimspace str = f (f str)
+  where f = dropWhile isSpace . reverse
+
+-- Hide parsec's spaces and substitute this one:
+-- want "spaces" to mean an actual something there
+
+spaces = many1 space
+
+escChar =
+  do char '\\'
+     c <- anyChar
+     return (case c of
+             'a' -> chr 7
+             'b' -> chr 8
+             't' -> '\t'
+             'n' -> '\n'
+             'v' -> chr 11
+             'f' -> chr 12
+             'r' -> '\r'
+             _ -> c)
+
+-- The usual quoted-string with escaped quotes inside
+
+parseString =
+  do spaces
+     char '"'
+     str <- many (escChar <|> (noneOf "\""))
+     char '"'
+     return str
+
+parseOptionalString = option "" (TPCP.try parseString)
+
+-- TODO: are there some here that we need to add or remove?
+
+symbol = oneOf "!$%&*+-/:<=>?@^_~"
+
+parseName =
+  do spaces
+     first <- letter
+     rest <- many (letter <|> digit <|> symbol)
+     return (Name (first:rest))
+
+parseOptionalName = option (Name "") (TPCP.try parseName)
+
+parseInt = many1 digit >>= return . readInt
+
+-- Parse first alternative for amounts: \d+(\.\d*)?
+
+parseAmt1 =
+  do ip <- many1 digit
+     fp <- option "" (char '.' >> many digit)
+     return (readAmt ip fp)
+
+-- Parse second alternative for amounts: \.\d+
+
+parseAmt2 =
+  do char '.'
+     fp <- many1 digit
+     return (readAmt "0" fp)
+
+-- Parse third alternative for amounts: \d+/\d+: this is how rationals
+-- get displayed if they're not integers scaled by a power of 10, so
+-- we'd better be able to handle them...
+
+parseAmt3 =
+  do n <- parseInt
+     char '/'
+     d <- parseInt
+     return (n%d)
+
+-- Parse a floating-point-formatted number as either \d+(\.\d*)? or \.\d+
+
+parseAmount =
+  do many space
+     s <- option '+' (oneOf "+-")
+     v <- (TPCP.try parseAmt3) <|>
+           parseAmt1 <|>
+           parseAmt2
+     return (Amount (if s == '+' then v else negate v))
+
+parseOptionalAmount = option (Amount 1) (TPCP.try parseAmount)
+
+-- A date: three groups of digits separated by '/' or '-' (but not mixed)
+-- where the first group of digits is the year, the second the month, and
+-- the third the day: YYYY/MM/DD or YYYY-MM-DD: no messing around with
+-- whether days come first or months, and also no implicit 19xx or 20xx
+-- or whatever.
+
+parseDate =
+  do spaces
+     y <- parseInt
+     m <- pMS '/' <|> pMS '-'
+     d <- parseInt
+     return (Date (fromInteger y) (fromInteger m) (fromInteger d))
+  where pMS s =
+          do char s
+             m <- parseInt
+             char s
+             return m
+
+parseReconcile =
+  option False (TPCP.try (many space >> char '*' >> return True))
+
+-- The top-level record parsers
+
+parseCIE =
+  do rtype <- string "ccs" <|> string "income" <|> string "expense"
+     name <- parseName
+     desc <- parseOptionalString
+     return (case rtype of
+               "ccs" -> CCSRec name desc
+               "income" -> IncomeRec name desc
+               "expense" -> ExpenseRec name desc)
+
+parseAccount =
+  do string "account"
+     name <- parseName
+     date <- parseDate
+     desc <- parseOptionalString
+     return (AccountRec name date desc)
+
+parseGroup =
+  do string "group"
+     names <- many1 parseName
+     return (GroupRec (head names) (tail names))
+
+parsePrice =
+  do string "price"
+     date <- parseDate
+     amt1 <- parseOptionalAmount
+     name1 <- parseName
+     amt2 <- parseAmount
+     name2 <- parseOptionalName
+     return (PriceRec date False (CCSAmount name1 amt1) (CCSAmount name2 amt2))
+
+parseXfer =
+  do string "xfer"
+     rec <- parseReconcile
+     date <- parseDate
+     acc1 <- parseName
+     acc2 <- parseName
+     amt <- parseAmount
+     ccs <- parseOptionalName
+     memo <- parseOptionalString
+     chknum <- option 0 (TPCP.try (spaces >> parseInt))
+     return (XferRec date rec acc1 acc2 (CCSAmount ccs amt)
+                     memo (fromInteger chknum))
+
+-- 'buy' and 'sell' are purely syntactic sugar for 'exch': 'buy' is
+-- exactly the same, and 'sell' is the same as if {amt1,ccs1} and
+-- {amt2,ccs2} were swapped in an exch
+
+parseEBS =
+  do rtype <- string "buy" <|> string "sell" <|> string "exch"
+     rec <- parseReconcile
+     date <- parseDate
+     acct <- parseName
+     amt1 <- parseAmount
+     name1 <- parseName
+     amt2 <- parseAmount
+     name2 <- parseOptionalName
+     memo <- parseOptionalString
+     let et = case rtype of
+                "buy" -> B
+                "sell" -> S
+                "exch" -> E
+         ccsa1 = CCSAmount name1 amt1
+         ccsa2 = CCSAmount name2 amt2
+     if et == S
+        then return (ExchRec et date rec acct ccsa2 ccsa1 memo)
+        else return (ExchRec et date rec acct ccsa1 ccsa2 memo)
+
+parseSplit =
+  do string "split"
+     date <- parseDate
+     name <- parseName
+     amt1 <- parseAmount
+     amt2 <- parseAmount
+     return (SplitRec date name amt1 amt2)
+
+parseTodo =
+  do string "todo"
+     rec <- parseReconcile
+     date <- parseDate
+     spaces
+     memo <- many anyChar
+     return (ToDoRec date rec (trimspace memo))
+
+parseComment =
+  do many1 (char '#')
+     many space
+     comment <- many anyChar
+     return (CommentRec (trimspace comment))
+
+parseBlank = many space >> return (CommentRec "")
+
+parseRecord =
+  do many space
+     record <- parsePrice
+           <|> parseXfer
+           <|> (TPCP.try parseCIE)
+           <|> (TPCP.try parseEBS)
+           <|> parseSplit
+           <|> parseTodo
+           <|> (TPCP.try parseAccount)
+           <|> parseGroup
+           <|> parseComment
+           <|> parseBlank	-- this must be last, as it can match nothing
+     many space
+     eof
+     return record
+
+parseURecord input =
+  case parse parseRecord "umm record" input of
+       Left _ -> ErrorRec input
+       Right val -> val
+
+parseUDate input = parse parseDate "umm date" (" " ++ input)
+
+parsePrefixOf n str =
+  string (take n str) >> opts (drop n str) >> return str
+  where opts [] = return ()
+        opts (c:cs) = optional (char c >> opts cs)
+
+parseCmdBalance now =
+  do parsePrefixOf 3 "balance"
+     name <- parseOptionalName
+     date <- option now (TPCP.try parseDate)
+     return (BalanceCmd name date)
+
+parseCmdBasis now =
+  do parsePrefixOf 3 "basis"
+     name <- parseName
+     date <- option now (TPCP.try parseDate)
+     return (BasisCmd name date)
+
+-- TODO: make verbose/nonverbose work... somehow add optional verbosity
+-- ok, this is really cheesy! make it better!
+
+parseCmdChange now =
+  do parsePrefixOf 1 "change"
+     name <- parseName
+     date1 <- option now parseDate
+     date2 <- option start_time parseDate
+     if compare date2 date1 == LT
+        then return (ChangeCmd True name date2 date1)
+        else return (ChangeCmd False name date1 date2)
+
+parseCmdList =
+  do parsePrefixOf 1 "list"
+     many space
+     w <- option "all" (parsePrefixOf 1 "ccs" <|>
+                        parsePrefixOf 1 "groups" <|>
+                        parsePrefixOf 1 "incomes" <|>
+                        parsePrefixOf 1 "expenses" <|>
+                        TPCP.try (parsePrefixOf 2 "all") <|>
+                        parsePrefixOf 2 "accounts")
+     return (ListDataCmd (case w of
+                            "all" -> COLAll
+                            "ccs" -> COLCCS
+                            "accounts" -> COLAccts
+                            "groups" -> COLGrps
+                            "incomes" -> COLIncs
+                            "expenses" -> COLExps))
+
+parseCmdPrice now =
+  do parsePrefixOf 1 "price"
+     name <- parseName
+     date <- option now (TPCP.try parseDate)
+     return (PriceCmd name date)
+
+parseCmdReconcile now =
+  do parsePrefixOf 3 "reconcile"
+     name <- parseOptionalName
+     date <- option now (TPCP.try parseDate)
+     return (ReconcileCmd name date)
+
+parseCmdRegister now =
+  do parsePrefixOf 3 "register"
+     name <- parseName
+     date1 <- option now (TPCP.try parseDate)
+     date2 <- option start_time (TPCP.try parseDate)
+     if compare date2 date1 == LT
+        then return (RegisterCmd name date2 date1)
+        else return (RegisterCmd name date1 date2)
+
+parseCmdToDo now =
+  do parsePrefixOf 1 "todo"
+     date <- option now (TPCP.try parseDate)
+     return (ToDoCmd date)
+
+parseCommand date =
+  do cmd <- parseCmdChange date
+        <|> parseCmdList
+        <|> parseCmdPrice date
+        <|> parseCmdToDo date
+        <|> TPCP.try (parseCmdBalance date)
+        <|> parseCmdBasis date
+        <|> TPCP.try (parseCmdRegister date)
+        <|> parseCmdReconcile date
+     eof
+     return cmd
+
+parseUCommand now input =
+  case parse (parseCommand now) "umm command" input of
+       Left err -> error (show err)
+       Right val -> val
diff --git a/sample1.dat b/sample1.dat
new file mode 100644
--- /dev/null
+++ b/sample1.dat
@@ -0,0 +1,39 @@
+ccs US$ "The Almighty Buck"
+
+income cash
+income interestexpense cash
+
+account acc1 2009-9-1 "test account 1"
+account acc2 2009-9-1 "test account 2"
+
+group all acc1 acc2ccs FOO "The Foo Companies"
+ccs BAR "The Bar Companies"ccs CLAM "Groupe Mollusque"
+
+xfer 2009-9-1 cash acc1 100buy 2009-9-1 acc1 10 FOO 15
+xfer 2009-9-2 interest acc1 0.25buy 2009-9-2 acc1 20 FOO 27
+xfer 2009-9-3 acc1 cash 5.25
+
+xfer 2009-9-1 cash acc2 100buy 2009-9-1 acc2 10 BAR 25
+xfer 2009-9-2 interest acc2 0.25
+buy 2009-9-2 acc2 20 FOO 27
+xfer 2009-9-3 acc2 cash 5.25
+xfer 2009-9-4 acc1 acc2 25
+
+xfer 2009-9-5 cash acc1 200buy 2009-9-5 acc1 30 FOO 40
+buy 2009-9-5 acc1 30 BAR 40
+
+price 2009-9-5 FOO 1.5
+
+xfer 2009-9-6 cash acc1 20 CLAM
+
+price 2009-10-21 FOO 2.1
+price 2009-10-24 FOO 2.4
+price 2009-10-25 FOO 2.5
+price 2009-10-23 FOO 2.3
+price 2009-10-22 FOO 2.2
+
+price 2009-10-25 BAR 3.25
+price 2009-10-27 3 BAR 10
+
+split 2009-11-5 CLAM 2 1
+price 2009-11-11 CLAM 0.001
diff --git a/sample2.dat b/sample2.dat
new file mode 100644
--- /dev/null
+++ b/sample2.dat
@@ -0,0 +1,323 @@
+# Copyright 2009 Uwe Hollerbach <uh@alumni.caltech.edu>
+#
+# This file is part of umm, Uwe's Money Manager.
+#
+# $Id: sample1.dat,v 1.4 2009/11/09 23:07:22 uwe Exp $
+
+# Sample ledger file: a small investment club with 6 people,
+# investing 50 dollars each twice per month
+
+# NAMES AND VALUES OF SECURITIES ARE TOTALLY FAKE AND MADE UP
+
+todo 2009-10-15 Search for "run" in the ledger file, then run each command
+todo 2009-10-15 as indicated, and follow along with the numbers. The club
+todo 2009-10-15 doesn't begin until 2150, so you'll see all [empty] here!
+
+################################################################
+# actual ledger begins here
+
+# The format of the club will be:
+#
+# 1)	at each meeting, we determine the value of a share,
+#	initially 50 US$
+#
+# 2)	from cash, we put money into each member's account,
+#	then transfer that cash into the club account
+#	then transfer the appropriate number of shares back to each member
+#
+# 3)	the club account will therefore contain cash and/or securities
+#	and a negative number of club shares: its net value will always
+#	equal 0, which determines the value of a share;
+#	member accounts will contain increasing numbers of club shares
+#	and temporarily 
+#
+# 4)	periodically, the club invests, turning cash in the club account
+#	into securities
+
+ccs US$ "The Almighty Buck"
+
+income cash
+income interest
+expense cash
+
+# This is the source of contribution cash. This is slightly convoluted,
+# we're doing it this way to easily track the total contributions over
+# time. If desired, we could have an individual contributions account for
+# each member, cont-Al, cont-Barb, etc, but that would be even worse.
+# With macros, this would be a lot easier: a one-line macro could expand
+# to several transactions.
+
+account contributions 2150-1-1 "The source of contributions"
+
+account Al 2150-1-1 "Alfred the Butler"
+account Barb 2150-1-1 "Barbarella, Queen of the Galaxy"
+account Chas 2150-1-1 "Karolus Magnus, Imperator Romanorum et Rex Francorum"
+account Deb 2150-1-1 "Debutante Smashingella"
+account Ed 2150-1-1 "AEthelraed the Unready"
+account Frank 2150-1-1 "Dr Frank N Furter"
+
+account club 2150-1-1 "Le Club d'Investment"
+ccs share "A share of Le Club"
+
+# Exclude contributions from this so that we see just the value of
+# the club as a whole and of each member's shares, not also the
+# contributions.
+
+group all Al Barb Chas Deb Ed Frank club
+
+# meeting 1
+
+xfer 2150-1-1 contributions Al 50
+xfer 2150-1-1 Al club 50
+xfer 2150-1-1 club Al 1 share
+xfer 2150-1-1 contributions Barb 50
+xfer 2150-1-1 Barb club 50
+xfer 2150-1-1 club Barb 1 share
+xfer 2150-1-1 contributions Chas 50
+xfer 2150-1-1 Chas club 50
+xfer 2150-1-1 club Chas 1 share
+xfer 2150-1-1 contributions Deb 50
+xfer 2150-1-1 Deb club 50
+xfer 2150-1-1 club Deb 1 share
+xfer 2150-1-1 contributions Ed 50
+xfer 2150-1-1 Ed club 50
+xfer 2150-1-1 club Ed 1 share
+xfer 2150-1-1 contributions Frank 50
+xfer 2150-1-1 Frank club 50
+xfer 2150-1-1 club Frank 1 share
+
+# run "umm sample1.dat bal 2150-1-14"
+# to find that share price is 300/6 = 50
+
+# meeting 2
+
+xfer 2150-1-15 contributions Al 50
+xfer 2150-1-15 Al club 50
+xfer 2150-1-15 club Al 1 share
+xfer 2150-1-15 contributions Barb 50
+xfer 2150-1-15 Barb club 50
+xfer 2150-1-15 club Barb 1 share
+xfer 2150-1-15 contributions Chas 50
+xfer 2150-1-15 Chas club 50
+xfer 2150-1-15 club Chas 1 share
+xfer 2150-1-15 contributions Deb 50
+xfer 2150-1-15 Deb club 50
+xfer 2150-1-15 club Deb 1 share
+xfer 2150-1-15 contributions Ed 50
+xfer 2150-1-15 Ed club 50
+xfer 2150-1-15 club Ed 1 share
+xfer 2150-1-15 contributions Frank 50
+xfer 2150-1-15 Frank club 50
+xfer 2150-1-15 club Frank 1 share
+
+xfer 2150-1-30 interest club 3
+
+# run "umm sample1.dat bal 2150-1-30"
+# to find that share price is 603/12 = 50.25,
+# so each member buys $50/$50.25 = 0.995025... shares
+
+# meeting 3
+
+xfer 2150-2-1 contributions Al 50
+xfer 2150-2-1 Al club 50
+xfer 2150-2-1 club Al 0.995025 share
+xfer 2150-2-1 contributions Barb 50
+xfer 2150-2-1 Barb club 50
+xfer 2150-2-1 club Barb 0.995025 share
+xfer 2150-2-1 contributions Chas 50
+xfer 2150-2-1 Chas club 50
+xfer 2150-2-1 club Chas 0.995025 share
+xfer 2150-2-1 contributions Deb 50
+xfer 2150-2-1 Deb club 50
+xfer 2150-2-1 club Deb 0.995025 share
+xfer 2150-2-1 contributions Ed 50
+xfer 2150-2-1 Ed club 50
+xfer 2150-2-1 club Ed 0.995025 share
+xfer 2150-2-1 contributions Frank 50
+xfer 2150-2-1 Frank club 50
+xfer 2150-2-1 club Frank 0.995025 share
+
+# run "umm sample1.dat bal 2150-2-14"
+# to find that share price is 903/17.97015
+# so each member still buys 0.995025... shares
+# but AEthelraed doesn't contribute,
+# and Frank can only afford $40 this time
+
+# meeting 4
+
+xfer 2150-2-15 contributions Al 50
+xfer 2150-2-15 Al club 50
+xfer 2150-2-15 club Al 0.995025 share
+xfer 2150-2-15 contributions Barb 50
+xfer 2150-2-15 Barb club 50
+xfer 2150-2-15 club Barb 0.995025 share
+xfer 2150-2-15 contributions Chas 50
+xfer 2150-2-15 Chas club 50
+xfer 2150-2-15 club Chas 0.995025 share
+xfer 2150-2-15 contributions Deb 50
+xfer 2150-2-15 Deb club 50
+xfer 2150-2-15 club Deb 0.995025 share
+todo 2150-2-15 AEthelraed misses, Frank partial!
+xfer 2150-2-15 contributions Frank 40
+xfer 2150-2-15 Frank club 40
+xfer 2150-2-15 club Frank 0.79602 share
+
+xfer 2150-2-28 interest club 6
+
+# run "umm sample1.dat bal 2150-2-28"
+# to find that share price is 1149/22.74627 = 50.513777
+# so each member buys $50/$50.513777 = 0.989829... shares
+
+# meeting 5
+
+xfer 2150-3-1 contributions Al 50
+xfer 2150-3-1 Al club 50
+xfer 2150-3-1 club Al 0.989829 share
+xfer 2150-3-1 contributions Barb 50
+xfer 2150-3-1 Barb club 50
+xfer 2150-3-1 club Barb 0.989829 share
+xfer 2150-3-1 contributions Chas 50
+xfer 2150-3-1 Chas club 50
+xfer 2150-3-1 club Chas 0.989829 share
+xfer 2150-3-1 contributions Deb 50
+xfer 2150-3-1 Deb club 50
+xfer 2150-3-1 club Deb 0.989829 share
+xfer 2150-3-1 contributions Ed 50
+xfer 2150-3-1 Ed club 50
+xfer 2150-3-1 club Ed 0.989829 share
+xfer 2150-3-1 contributions Frank 50
+xfer 2150-3-1 Frank club 50
+xfer 2150-3-1 club Frank 0.989829 share
+
+# members determine to buy shares in Insatiable Enterprises,
+# which is currently trading about $44 per share;
+# transaction gets executed a couple of days later
+
+ccs IE "Insatiable Enterprises"
+
+xfer 2150-3-4 club cash 9 "commission to broker"
+buy 2150-3-4 club 32 IE 1415.36 "bought shares at 44.23"
+
+# IE has gone down slightly by next meeting
+price 2150-3-14 IE 43.95
+
+# run "umm sample1.dat bal 2150-3-14"
+# to find that club owns 32 shares of IE worth $1406.40, plus $24.64
+# against 28.685244 shares outstanding: each share is worth $49.887670
+# so each member buys 1.002252 shares
+
+# meeting 6
+
+xfer 2150-3-15 contributions Al 50
+xfer 2150-3-15 Al club 50
+xfer 2150-3-15 club Al 1.002252 share
+xfer 2150-3-15 contributions Barb 50
+xfer 2150-3-15 Barb club 50
+xfer 2150-3-15 club Barb 1.002252 share
+xfer 2150-3-15 contributions Chas 50
+xfer 2150-3-15 Chas club 50
+xfer 2150-3-15 club Chas 1.002252 share
+xfer 2150-3-15 contributions Deb 50
+xfer 2150-3-15 Deb club 50
+xfer 2150-3-15 club Deb 1.002252 share
+xfer 2150-3-15 contributions Ed 50
+xfer 2150-3-15 Ed club 50
+xfer 2150-3-15 club Ed 1.002252 share
+xfer 2150-3-15 contributions Frank 50
+xfer 2150-3-15 Frank club 50
+xfer 2150-3-15 club Frank 1.002252 share
+
+# uh-oh, IE might not have been a good buy!
+price 2150-3-30 IE 38.11
+xfer 2150-3-30 interest club 1.62
+
+# run "umm sample1.dat bal 2150-3-30"
+# to find that club owns 32 shares of IE worth $1219.52, plus $326.26
+# against 34.698756 shares outstanding: each share is worth $44.548571
+# so each member buys 1.122370 shares
+
+# meeting 7
+
+xfer 2150-4-1 contributions Al 50
+xfer 2150-4-1 Al club 50
+xfer 2150-4-1 club Al 1.122370 share
+xfer 2150-4-1 contributions Barb 50
+xfer 2150-4-1 Barb club 50
+xfer 2150-4-1 club Barb 1.122370 share
+xfer 2150-4-1 contributions Chas 50
+xfer 2150-4-1 Chas club 50
+xfer 2150-4-1 club Chas 1.122370 share
+xfer 2150-4-1 contributions Deb 50
+xfer 2150-4-1 Deb club 50
+xfer 2150-4-1 club Deb 1.122370 share
+xfer 2150-4-1 contributions Ed 50
+xfer 2150-4-1 Ed club 50
+xfer 2150-4-1 club Ed 1.122370 share
+xfer 2150-4-1 contributions Frank 50
+xfer 2150-4-1 Frank club 50
+xfer 2150-4-1 club Frank 1.122370 share
+
+# members still believe in IE, so decide to buy more
+
+xfer 2150-4-4 club cash 9 "commission to broker"
+buy 2150-4-4 club 16 IE 607.20 "bought shares at 37.95"
+
+# IE has recovered a little bit
+price 2150-4-14 IE 39.50
+
+# run "umm sample1.dat bal 2150-4-14"
+# to find that club owns 48 shares of IE worth $1896.00, plus $10.06
+# against 41.432976 shares outstanding: each share is worth $46.003454
+# so each member buys 1.086875 shares
+
+# meeting 8
+
+xfer 2150-4-15 contributions Al 50
+xfer 2150-4-15 Al club 50
+xfer 2150-4-15 club Al 1.086875 share
+xfer 2150-4-15 contributions Barb 50
+xfer 2150-4-15 Barb club 50
+xfer 2150-4-15 club Barb 1.086875 share
+xfer 2150-4-15 contributions Chas 50
+xfer 2150-4-15 Chas club 50
+xfer 2150-4-15 club Chas 1.086875 share
+xfer 2150-4-15 contributions Deb 50
+xfer 2150-4-15 Deb club 50
+xfer 2150-4-15 club Deb 1.086875 share
+xfer 2150-4-15 contributions Ed 50
+xfer 2150-4-15 Ed club 50
+xfer 2150-4-15 club Ed 1.086875 share
+xfer 2150-4-15 contributions Frank 50
+xfer 2150-4-15 Frank club 50
+xfer 2150-4-15 club Frank 1.086875 share
+
+# IE goes up very nicely!
+price 2150-4-30 IE 51.43
+xfer 2150-4-30 interest club 1.54
+
+# run "umm sample1.dat bal 2150-4-30"
+# to find that club owns 48 shares of IE worth $2468.64, plus $311.60
+# against 47.954226 shares outstanding: each share is worth $57.976955
+# so each member buys 0.862412 shares... but AEthelraed misses again
+
+# meeting 9
+
+xfer 2150-5-1 contributions Al 50
+xfer 2150-5-1 Al club 50
+xfer 2150-5-1 club Al 0.862412 share
+xfer 2150-5-1 contributions Barb 50
+xfer 2150-5-1 Barb club 50
+xfer 2150-5-1 club Barb 0.862412 share
+xfer 2150-5-1 contributions Chas 50
+xfer 2150-5-1 Chas club 50
+xfer 2150-5-1 club Chas 0.862412 share
+xfer 2150-5-1 contributions Deb 50
+xfer 2150-5-1 Deb club 50
+xfer 2150-5-1 club Deb 0.862412 share
+todo 2150-5-1 AEthelraed misses!
+xfer 2150-5-1 contributions Frank 50
+xfer 2150-5-1 Frank club 50
+xfer 2150-5-1 club Frank 0.862412 share
+
+# And so on and on and on... make up your own numbers from here on!
+
