GNU bug report logs - #70725
29.3; dired-do-touch completion

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From: Thierry Volpiatto <thievol <at> posteo.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: christopher <at> librehacker.com, 70725 <at> debbugs.gnu.org
Subject: bug#70725: 29.3; dired-do-touch completion
Date: Sat, 04 May 2024 12:31:39 +0000

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Thierry Volpiatto <thievol <at> posteo.net>
>> Cc: christopher <at> librehacker.com,  70725-done <at> debbugs.gnu.org
>> Date: Fri, 03 May 2024 07:10:37 +0000
>> 
>> Eli Zaretskii <eliz <at> gnu.org> writes:
>> 
>> >> Cc: 70725 <at> debbugs.gnu.org
>> >> From: Thierry Volpiatto <thievol <at> posteo.net>
>> >> Date: Fri, 03 May 2024 04:55:41 +0000
>> >> 
>> >> Christopher Howard <christopher <at> librehacker.com> writes:
>> >> 
>> >> > 1. install helm
>> >> > 2. emacs -q
>> >> > 3. M-x helm-mode
>> >> > 4. M-x dired (to some directory with files)
>> >> > 5. M-x dired-do-touch (T)
>> >> >
>> >> > My problem is that, when I try to use this command in helm mode, helm
>> >> > only gives me one completion option - the timestamp already on the
>> >> > file. Helm tells me it is responding to a completing-read call. But
>> >> > the dired-do-touch prompt says that the default action should be
>> >> > "now", i.e., the current date and time. Maybe this is a helm issue,
>> >> > but I was wondering if maybe something needs to be tweaked in
>> >> > dired-do-touch so that it passes a correct completion list off to
>> >> > completing-read.
>> >> 
>> >> "now" is not a valid answer for touch, it is just here in prompt to tell
>> >> you what DEFAULT is, so what you see in Helm completion is what you have
>> >> with vanilla Emacs if you press M-n. There is no issue here.
>> >> That said you have better time using helm-find-files instead of dired
>> >> for such operations on files.
>> >
>> > Thanks, Thierry.  I'm therefore closing this bug.
>> 
>> Hello Eli,
>> I didn't check carefully and I see now that the prompt says "now" for
>> DEFAULT but indeed the DEFAULT is the timestamp of the selected file and
>> not `current-time`, so to reflect what the prompt says (now) we have to
>> modify DEFAULT, maybe like this in `dired-do-chxxx`:
>> 
>> @@ -437,4 +437,7 @@
>> -			   (format-time-string
>> -			    "%Y%m%d%H%M.%S"
>> -			    (file-attribute-modification-time
>> -			     (file-attributes default-file))))
>> +			   (list
>> +                            (format-time-string
>> +			     "%Y%m%d%H%M.%S" (current-time))
>> +                            (format-time-string
>> +			     "%Y%m%d%H%M.%S"
>> +			     (file-attribute-modification-time
>> +			      (file-attributes default-file)))))
>
> Thanks, but can any of you two please show a recipe I could use to
> look into this, without having to install Helm?  Because the
> underlying issue is not Helm-specific, is it?

You don't have to install Helm, this is a dired (minor) issue.

From a dired buffer hit "T", the prompt show as default "now", now hit
M-n and examine the timestamp, you will see it the file timestamp but
not the "now timestamp".


-- 
Thierry

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