[PATCH] Add option to automatically align tags in agenda view

[Adam Porter <adam@alphapapa.net>]

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Hi Nicolas,

Here is a patch to optionally automatically align tags in the agenda
view to the right edge of the window.  I don't yet have the CA done, but
I think this qualifies as a tinychange.

Thanks,
Adam


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From 8cd0a4035ddb8fcd90d6011c9fd529526472b379 Mon Sep 17 00:00:00 2001
From: Adam Porter <adam@alphapapa.net>
Date: Mon, 7 Aug 2017 08:50:26 -0500
Subject: [PATCH] org-agenda.el: Add option to automatically align tags in
 agenda

(org-agenda-align-tags): Handle automatic alignment
(org-agenda-tags-column): Add 'auto setting

TINYCHANGE
---
 lisp/org-agenda.el | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index c8097de..52cbea0 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -1886,13 +1886,19 @@ When this is the symbol `prefix', only remove tags when
 (defvaralias 'org-agenda-remove-tags-when-in-prefix
   'org-agenda-remove-tags)
 
-(defcustom org-agenda-tags-column -80
+(defcustom org-agenda-tags-column 'auto
   "Shift tags in agenda items to this column.
-If this number is positive, it specifies the column.  If it is negative,
-it means that the tags should be flushright to that column.  For example,
--80 works well for a normal 80 character screen."
+If set to `auto', tags will be automatically aligned to the right
+edge of the window.
+
+If set to a positive number, tags will be left-aligned to that
+column.  If set to a negative number, tags will be right-aligned
+to that column.  For example, -80 works well for a normal 80
+character screen."
   :group 'org-agenda-line-format
-  :type 'integer)
+  :type '(choice
+	  (const :tag "Automatically align to right edge of window" auto)
+	  (integer :tag "Specific column" -80)))
 
 (defvaralias 'org-agenda-align-tags-to-column 'org-agenda-tags-column)
 
@@ -8959,7 +8965,11 @@ If FORCE-TAGS is non nil, the car of it returns the new tags."
 
 (defun org-agenda-align-tags (&optional line)
   "Align all tags in agenda items to `org-agenda-tags-column'."
-  (let ((inhibit-read-only t) l c)
+  (let ((inhibit-read-only t)
+	(org-agenda-tags-column (pcase org-agenda-tags-column
+				  ('auto (- (window-text-width)))
+				  (otherwise org-agenda-tags-column)))
+	l c)
     (save-excursion
       (goto-char (if line (point-at-bol) (point-min)))
       (while (re-search-forward "\\([ \t]+\\)\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$"
-- 
2.7.4