[PATCH] org-agenda.el: Fix clocking issues regex

[Tim Frana <tfr@mailbox.org>]

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Hi,

The method org-agenda-show-clocking-issues has a faulty regex, which 
leads to false-positive
clocking issues: " Clocked: +(-\\|\\([0-9]+:[0-9]+\\))"

There is no outer group to limit the OR-expression \\|, so the right 
half will match timestamps with
a closing parenthesis without any "Clocked" in front of it.

I added a non-capturing group in the attached patch: " Clocked: 
+(\\(?:-\\|\\([0-9]+:[0-9]+\\)\\))".


Reproduction:

Define a custom agenda:
(setq org-agenda-custom-commands '(("d" "Clock report for today" agenda ""
                                     ((org-agenda-span 1)
(org-agenda-start-with-clockreport-mode t)
                                      (org-agenda-start-with-log-mode 
'clockcheck)))))

Use an org file that is included in org-agenda-files, and add this 
sample headline:
Sample headline with time and closing parenthesis in it (it happened at 
12:00)

Clock in and out of the headline, make sure the clock timespan is at 
least 1 minute, and open the
agenda defined above. Observe that the headline is reported as 
overlapping with itself, as the
faulty regex will match twice on its agenda line.

Best Regards,
Tim



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From ac37efa543ab5823b5f2c62336d3e36b67fe516a Mon Sep 17 00:00:00 2001
From: mosquito-magnet <24659697+mosquito-magnet@users.noreply.github.com>
Date: Sat, 15 May 2021 15:43:28 +0200
Subject: [PATCH] org-agenda.el: Fix clocking issues regex

* org-agenda.el (org-agenda-show-clocking-issues): Fix regex to prevent false-positive clocking
issue detection.

Regex was missing a grouping to restrict the alternative \| to the
literal parentheses.

TINYCHANGE
---
 lisp/org-agenda.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index 95848ab9b..bf917d321 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -6059,7 +6059,7 @@ (defun org-agenda-show-clocking-issues ()
 		       '((:background "DarkRed") (:foreground "white"))))
 	 issue face m te ts dt ov)
     (goto-char (point-min))
-    (while (re-search-forward " Clocked: +(-\\|\\([0-9]+:[0-9]+\\))" nil t)
+    (while (re-search-forward " Clocked: +(\\(?:-\\|\\([0-9]+:[0-9]+\\)\\))" nil t)
       (setq issue nil face def-face)
       (catch 'next
 	(setq m (org-get-at-bol 'org-marker)
-- 
2.29.0