Merge pull request #435 from Fuco1/balance-at-point-target-commodity

Balance at point and target commodity

I like it.  Thanks.

2 files changed, 19 insertions, 4 deletions

diff --git a/lisp/ledger-commodities.el b/lisp/ledger-commodities.el
index ea6319ba..48fb78f7 100644
--- a/lisp/ledger-commodities.el
+++ b/lisp/ledger-commodities.el
@@ -33,6 +33,16 @@
   :type 'string
   :group 'ledger-reconcile)
 
+(defun ledger-read-commodity-with-prompt (prompt)
+  "Read commodity name after PROMPT.
+
+Default value is `ledger-reconcile-default-commodity'."
+  (let* ((buffer (current-buffer))
+         (commodities (with-temp-buffer
+                        (ledger-exec-ledger buffer (current-buffer) "commodities")
+                        (split-string (buffer-string) "\n" t))))
+    (completing-read prompt commodities nil t nil nil ledger-reconcile-default-commodity)))
+
 (defun ledger-split-commodity-string (str)
   "Split a commoditized string, STR, into two parts.
 Returns a list with (value commodity)."
diff --git a/lisp/ledger-mode.el b/lisp/ledger-mode.el
index 30f25dfc..26de84fc 100644
--- a/lisp/ledger-mode.el
+++ b/lisp/ledger-mode.el
@@ -125,14 +125,19 @@
                          ": "))
                nil 'ledger-minibuffer-history default))
 
-(defun ledger-display-balance-at-point ()
+(defun ledger-display-balance-at-point (&optional arg)
   "Display the cleared-or-pending balance.
-And calculate the target-delta of the account being reconciled."
-  (interactive)
+And calculate the target-delta of the account being reconciled.
+
+With prefix argument \\[universal-argument] ask for the target commodity and convert
+the balance into that."
+  (interactive "P")
   (let* ((account (ledger-read-account-with-prompt "Account balance to show"))
+         (target-commodity (when arg (ledger-read-commodity-with-prompt "Target commodity: ")))
          (buffer (current-buffer))
          (balance (with-temp-buffer
-                    (ledger-exec-ledger buffer (current-buffer) "cleared" account)
+                    (apply 'ledger-exec-ledger buffer (current-buffer) "cleared" account
+                            (when target-commodity (list "-X" target-commodity)))
                     (if (> (buffer-size) 0)
                         (buffer-substring-no-properties (point-min) (1- (point-max)))
                       (concat account " is empty.")))))