check: also check "accounts"/"commodities" on demand

(cherry picked from commit 0c2bf54f2955e3a25fd0282acc42608f957abaea)

hledger-lib/Hledger/Read/Common.hs

@@ -45,6 +45,8 @@ module Hledger.Read.Common (
   parseAndFinaliseJournal,
   parseAndFinaliseJournal',
   journalFinalise,
+  journalCheckAccountsDeclared,
+  journalCheckCommoditiesDeclared,
   journalCheckPayeesDeclared,
   setYear,
   getYear,

hledger/Hledger/Cli/Commands/Check.hs

@@ -45,7 +45,9 @@ check copts@CliOpts{rawopts_} j = do
 -- (Currently, just the optional checks that only the check command
 -- can do; not the checks done by default or with --strict.)
 data Check =
-    Ordereddates
+    Accounts
+  | Commodities
+  | Ordereddates
   | Payees
   | Uniqueleafnames
   deriving (Read,Show,Eq)
@@ -74,12 +76,17 @@ parseCheckArgument s =
 runCheck :: CliOpts -> Journal -> (Check,[String]) -> IO ()
 runCheck copts@CliOpts{rawopts_} j (check,args) = 
   case check of
-    Ordereddates    -> checkdates copts' j
+    Accounts -> case journalCheckAccountsDeclared j of
+      Right () -> return ()
+      Left err -> hPutStrLn stderr ("Error: "++err) >> exitFailure
+    Commodities -> case journalCheckCommoditiesDeclared j of
+      Right () -> return ()
+      Left err -> hPutStrLn stderr ("Error: "++err) >> exitFailure
+    Ordereddates -> checkdates copts' j
+    Payees -> case journalCheckPayeesDeclared j of
+      Right () -> return ()
+      Left err -> hPutStrLn stderr ("Error: "++err) >> exitFailure
     Uniqueleafnames -> checkdupes copts' j
-    Payees          ->
-      case journalCheckPayeesDeclared j of
-        Right () -> return ()
-        Left err -> hPutStrLn stderr ("Error: "++err) >> exitFailure
   where
     -- Hack: append the provided args to the raw opts,
     -- in case the check can use them (like checkdates --unique). 

hledger/Hledger/Cli/Commands/Check.md

@@ -21,7 +21,8 @@ Here are the checks currently available:
 
 ### Basic checks
 
-These are always run by this command and other commands:
+These checks are always run automatically, by (almost) all hledger commands,
+including `check`:
 
 - **parseable** - data files are well-formed and can be 
   [successfully parsed](hledger.html#input-files)
@@ -35,8 +36,8 @@ These are always run by this command and other commands:
 
 ### Strict checks
 
-These are always run by this and other commands when `-s`/`--strict` is used
-([strict mode]):
+These additional checks are run when the `-s`/`--strict` ([strict mode]) flag is used.
+They can also be run by specifying their names as arguments to `check`:
 
 - **accounts** - all account names used by transactions 
   [have been declared](hledger.html#account-error-checking)
@@ -46,7 +47,7 @@ These are always run by this and other commands when `-s`/`--strict` is used
 
 ### Other checks
 
-These checks can be run by specifying their names as arguments to the check command:
+These checks can be run only by specifying their names as arguments to `check`:
 
 - **ordereddates** - transactions are ordered by date (similar to the old `check-dates` command)
 
@@ -56,7 +57,7 @@ These checks can be run by specifying their names as arguments to the check comm
 
 ### Add-on checks
 
-Some checks are not yet integrated with this command, but are available as
+These checks are not yet integrated with `check`, but are available as
 [add-on commands] in <https://github.com/simonmichael/hledger/tree/master/bin>:
 
 - **hledger-check-tagfiles** - all tag values containing / (a forward slash) exist as file paths