emacs-orgmode
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [O] Adding new table rows/cols in a formula update


From: Dima Kogan
Subject: Re: [O] Adding new table rows/cols in a formula update
Date: Sat, 11 Oct 2014 10:02:31 -0700

Nicolas Goaziou <address@hidden> writes:

>> Thanks for your work on this, the patch looks good but it cannot be
>> accepted as a "tiny change".  Would you be willing to sign the FSF
>> copyright assignment papers?
>
> Actually, it's not a tiny change. He signed copyright assignment
> already. See http://permalink.gmane.org/gmane.emacs.orgmode/91352

Here's the same patch without the TINYCHANGE marker, if that's helpful.

>From 6a361837f1f7b71a02ab5b918509def84c9fa43e Mon Sep 17 00:00:00 2001
From: Dima Kogan <address@hidden>
Date: Tue, 30 Sep 2014 22:36:21 -0700
Subject: [PATCH] org-table: Field formulas can now create columns as needed

* org-table.el (org-table-formula-create-columns): New variable.
(org-table-recalculate): Use the new org-table-formula-make-new-cols
customization to control whether org creates new columns when
a formula explicitly targets them.
---
 etc/ORG-NEWS                   |  6 +++++
 lisp/org-table.el              | 35 +++++++++++++++++++++++---
 testing/lisp/test-org-table.el | 56 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 94 insertions(+), 3 deletions(-)

diff --git a/etc/ORG-NEWS b/etc/ORG-NEWS
index 1af54ad..0a5af68 100644
--- a/etc/ORG-NEWS
+++ b/etc/ORG-NEWS
@@ -90,6 +90,12 @@ docstrings (including ~orgtbl-to-generic~) for details.
 *** Non-floating minted listings in Latex export
 It is not possible to specify =#+attr_latex: :float nil= in conjunction with
 source blocks exported by the minted package.
+*** Field formulas can now create columns as needed
+Previously, evaluating formulas that referenced out-of-bounds columns
+would throw an error. A new variable
+~org-table-formula-create-columns~ was added to adjust this
+behavior. It is now possible to silently add new columns, to do so
+with a warning or to explicitly ask the user each time.
 ** Miscellaneous
 *** File names in links accept are now compatible with URI syntax
 Absolute file names can now start with =///= in addition to =/=. E.g.,
diff --git a/lisp/org-table.el b/lisp/org-table.el
index 7607ead..14c68d6 100644
--- a/lisp/org-table.el
+++ b/lisp/org-table.el
@@ -354,6 +354,18 @@ portability of tables."
          (const :tag "Stick to hline" nil)
          (const :tag "Error on attempt to cross" error)))
 
+(defcustom org-table-formula-create-columns nil
+  "Non-nil means that evaluation of a field formula can add new
+columns if an out-of-bounds field is being set."
+  :group 'org-table-calculation
+  :version "24.5"
+  :package-version '(Org . "8.3")
+  :type '(choice
+         (const :tag "Setting an out-of-bounds field generates an error 
(default)" nil)
+         (const :tag "Setting an out-of-bounds field silently adds columns as 
needed" t)
+         (const :tag "Setting an out-of-bounds field adds columns as needed, 
but issues a warning message" warn)
+         (const :tag "When setting an out-of-bounds field, the user is 
prompted" prompt)))
+
 (defgroup org-table-import-export nil
   "Options concerning table import and export in Org-mode."
   :tag "Org Table Import Export"
@@ -3125,9 +3137,26 @@ known that the table will be realigned a little later 
anyway."
       (while (setq eq (pop eqlname1))
        (message "Re-applying formula to field: %s" (car eq))
        (org-goto-line (nth 1 eq))
-       (org-table-goto-column (nth 2 eq))
-       (org-table-eval-formula nil (nth 3 eq) 'noalign 'nocst
-                               'nostore 'noanalysis))
+       (let ((column-target (nth 2 eq)))
+         (when (> column-target 1000)
+           (user-error "Formula column target too large"))
+         (let* ((column-count (progn (end-of-line)
+                                     (1- (org-table-current-column))))
+                (create-new-column
+                 (and (> column-target column-count)
+                      (or (eq org-table-formula-create-columns t)
+                          (and
+                           (eq org-table-formula-create-columns 'warn)
+                           (progn
+                             (org-display-warning "Out-of-bounds formula added 
columns")
+                             t))
+                          (and
+                           (eq org-table-formula-create-columns 'prompt)
+                           (yes-or-no-p "Out-of-bounds formula. Add 
columns?"))))))
+           (org-table-goto-column column-target nil create-new-column))
+
+         (org-table-eval-formula nil (nth 3 eq) 'noalign 'nocst
+                                 'nostore 'noanalysis)))
 
       (org-goto-line thisline)
       (org-table-goto-column thiscol)
diff --git a/testing/lisp/test-org-table.el b/testing/lisp/test-org-table.el
index e083683..d99db27 100644
--- a/testing/lisp/test-org-table.el
+++ b/testing/lisp/test-org-table.el
@@ -1550,6 +1550,62 @@ See also `test-org-table/copy-field'."
             (progn (search-forward "# END RECEIVE ORGTBL table")
                    (match-beginning 0)))))))
 
+(ert-deftest test-org-table/field-formula-outside-table ()
+  "If `org-table-formula-create-columns' is nil, then a formula
+that references an out-of-bounds column should do nothing. If it
+is t, then new columns should be added as needed"
+
+  (let ((org-table-formula-create-columns nil))
+
+    ;; need condition-case to trap the out-of-bounds user-error
+    (condition-case
+       nil
+       (org-test-table-target-expect
+        "
+| 2 |
+| 4 |
+| 8 |
+"
+        "
+| 2 |
+| 4 |
+| 8 |
+"
+        1
+        "#+TBLFM: @1$2=5")
+      ('user-error t)))
+
+  (let ((org-table-formula-create-columns t))
+
+    ;; make sure field formulas work
+    (org-test-table-target-expect
+     "
+| 2 |
+| 4 |
+| 8 |
+"
+     "
+| 2 | 5 |
+| 4 |   |
+| 8 |   |
+"
+     1
+     "#+TBLFM: @1$2=5")
+
+    ;; and make sure column formulas work too
+    (org-test-table-target-expect
+     "
+| 2 |
+| 4 |
+| 8 |
+"
+     "
+| 2 |   | 15 |
+| 4 |   | 15 |
+| 8 |   | 15 |
+"
+     1
+     "#+TBLFM: $3=15")))
 
 (provide 'test-org-table)
 
-- 
2.0.0


reply via email to

[Prev in Thread] Current Thread [Next in Thread]