print: always right-align amounts

print now always right-aligns the amounts in an entry, even when they
are wider than 12 characters.

If there is a price, it's considered part of the amount for
right-alignment. Maybe it would be nicer to put amounts and prices in
separate columns ? That will get a little complicated, needs more
discussion/design.

Also some cleanup of postingAsLines.

hledger-lib/Hledger/Data/Transaction.hs

@@ -175,19 +175,25 @@ postingAsLines elideamount ps p =
     postinglines
     ++ newlinecomments
   where
-    postinglines = map rstrip $ lines $ concatTopPadded [showacct p, "  ", amount, samelinecomment]
-    amount = if elideamount then "" else showamt (pamount p)
+    postinglines = map rstrip $ lines $ concatTopPadded [account, "  ", amount, samelinecomment]
+
+    account =
+      indent $
+        showstatus p ++ fitString (Just acctwidth) Nothing False True (showAccountName Nothing (ptype p) (paccount p))
+        where
+          showstatus p = if pstatus p == Cleared then "* " else ""
+          acctwidth = maximum $ map (strWidth . paccount) ps
+
+    -- currently prices are considered part of the amount string when right-aligning amounts
+    amount
+      | elideamount = ""
+      | otherwise   = fitStringMulti (Just amtwidth) Nothing False False $ showMixedAmount $ pamount p
+      where
+        amtwidth = maximum $ 12 : map (strWidth . showMixedAmount . pamount) ps  -- min. 12 for backwards compatibility
+
     (samelinecomment, newlinecomments) =
       case renderCommentLines (pcomment p) of []   -> ("",[])
                                               c:cs -> (c,cs)
-    showacct p =
-      indent $
-        showstatus p ++ fitString (Just w) Nothing False True (showAccountName Nothing (ptype p) (paccount p))
-        where
-          showstatus p = if pstatus p == Cleared then "* " else ""
-          w = maximum $ map (strWidth . paccount) ps
-    showamt =
-        padLeftWide 12 . showMixedAmount
 
 tests_postingAsLines = [
    "postingAsLines" ~: do

tests/i18n/wide-char-layout.test

@@ -1,17 +1,46 @@
-# ALl output should preserve alignment etc. when showing wide characters.
-# XXX For a better test, the sample journals should have commodity symbols.
-# XXX How to test hledger-ui ?
+# ALl output should preserve alignment etc. when showing wide characters
+# (in apps and fonts which render wide chars as exactly double width).
+#
+# XXX add commodity symbols and prices to the sample journals
+# XXX how to test hledger-ui ?
 
 # 1.
-hledger -f chinese.journal print
+# hledger -f chinese.journal print
+# >>>
+# 2014/01/01 transaction 1
+#     㐀                1
+#     㐀:㐁            -1
+#
+# 2014/01/02 transaction 2
+#     㐀:㐁:㐂                1
+#     㐀:㐁:㐂:㐃            -1
+#
+# 2014/01/03 transaction 3
+#     㐀:㐁:㐂:㐃:㐄             1
+#     㐀                        -1
+#
+# >>>=0
+hledger -f - print
+<<<
+2014-01-01 transaction 1
+  㐀                                          㐃㐃1 @ 2 㐂㐂㐂㐂㐂㐂㐂㐂㐂㐂㐂
+  㐀:㐁                                       ;㐃㐃-1
+
+2014-01-02 transaction 2
+  㐀:㐁:㐂                                    USD 1
+  㐀:㐁:㐂:㐃                                EUR -1
+
+2014-01-03 transaction 3
+  㐀:㐁:㐂:㐃:㐄                                  1
+  㐀                                            -1
 >>>
 2014/01/01 transaction 1
-    㐀                1
-    㐀:㐁            -1
+    㐀     㐃㐃1 @ 2 㐂㐂㐂㐂㐂㐂㐂㐂㐂㐂㐂
+    㐀:㐁         -2 㐂㐂㐂㐂㐂㐂㐂㐂㐂㐂㐂    ; 㐃㐃-1
 
 2014/01/02 transaction 2
-    㐀:㐁:㐂                1
-    㐀:㐁:㐂:㐃            -1
+    㐀:㐁:㐂     USD 1 @@ EUR 1
+    㐀:㐁:㐂:㐃          EUR -1
 
 2014/01/03 transaction 3
     㐀:㐁:㐂:㐃:㐄             1