Re: [PATCH] lisp/org-clock.el (org-clock-sum): Rewrite regex using rx

[Morgan Smith]

Ihor Radchenko <yantar92@posteo.net> writes:

>> * testing/lisp/test-org-clock.el (test-org-clock/clocktable/insert):
>> Add a clock time that does not include timestamps.
>> ...
>> -
>> -      (goto-line 2)
>> +      (insert (org-test-clock-create-clock ". 1:00" ". 2:00")
>> +              "CLOCK: => 1:00\n")
>
> This is not a valid clock format. Matching such lines is a bug.
> See https://list.orgmode.org/orgmode/87wpkkhafc.fsf@saiph.selenimh/

Let me preface this defense with the fact that I don't like this format
and I don't think we should support it.  Rewriting `org-clock-sum' would
be much easier if we drop support for it.  However, I do believe we
currently support it.

First of all, it currently does work.

Accord to the "Version 4.78" release notes as found on worg, this is
valid.

```
   - You may specify clocking times by hand (i.e. without
     clocking in and out) using this syntax.

     : CLOCK: => 2:00

     Thanks to Scott Jaderholm for this proposal.
```

Also last time I went to rewrite `org-clock-sum' you said
(https://list.orgmode.org/orgmode/87bkg7xbxo.fsf@localhost/):

```
Further, you dropped the

             ((match-end 4)
              ;; A naked time.

branch of the code, which accounts for CLOCK: => HH:MM lines that are not clock 
elements.
```