* Possible bug in subtree matching with empty title + tags
@ 2020-05-02 12:49 Christian Heinrich
2020-05-02 13:23 ` Nicolas Goaziou
0 siblings, 1 reply; 2+ messages in thread
From: Christian Heinrich @ 2020-05-02 12:49 UTC (permalink / raw)
To: emacs-orgmode
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Hi,
I'm often using empty header titles that only contain tags, such as
> ** :foo:
In my case, this is sufficient (for instance for flashcards, where I never have to actually have to
use the agenda etc.). However, since Nicolas's refactoring in
be31a0c4595a6d68b03b5cfbcbcdbf2cd76d2b7f empty titles seem to be prohibited. In the above example,
using subtrees (C-/ m) on the "foo" tag will return nothing, even though the tag is in the file. Is
this a deliberate change? I didn't see a note in the manual saying that headings must not be empty
(this might be useful then).
Thanks for your help guys!
Cheers
Christian
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Possible bug in subtree matching with empty title + tags
2020-05-02 12:49 Possible bug in subtree matching with empty title + tags Christian Heinrich
@ 2020-05-02 13:23 ` Nicolas Goaziou
0 siblings, 0 replies; 2+ messages in thread
From: Nicolas Goaziou @ 2020-05-02 13:23 UTC (permalink / raw)
To: Christian Heinrich; +Cc: emacs-orgmode
Hello,
Christian Heinrich <christian@gladbachcity.de> writes:
> I'm often using empty header titles that only contain tags, such as
>
>> ** :foo:
>
> In my case, this is sufficient (for instance for flashcards, where I never have to actually have to
> use the agenda etc.). However, since Nicolas's refactoring in
> be31a0c4595a6d68b03b5cfbcbcdbf2cd76d2b7f empty titles seem to be prohibited. In the above example,
> using subtrees (C-/ m) on the "foo" tag will return nothing, even though the tag is in the file. Is
> this a deliberate change? I didn't see a note in the manual saying that headings must not be empty
> (this might be useful then).
This is not totally about empty headings, which are fine in Org.
Your example is ambiguous. Is it an empty headline with tags, or
a headline titled ":foo:" with no tag? Since we cannot support both,
choosing one breaks support for the other. You could use, e.g.,
a NO-BREAK SPACE character in your headline and lift the ambiguity.
This is not a change, but rather and undefined corner-case. There was
a discussion about it a couple of years ago, IIRC. I don't remember what
the outcome was.
Regards,
--
Nicolas Goaziou
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2020-05-02 12:49 Possible bug in subtree matching with empty title + tags Christian Heinrich
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