* Case-sensitivity in regular expressions and sparse trees for tags
@ 2008-09-17 19:38 Chris Randle
2008-09-18 15:43 ` Carsten Dominik
0 siblings, 1 reply; 3+ messages in thread
From: Chris Randle @ 2008-09-17 19:38 UTC (permalink / raw)
To: emacs-orgmode
Hi Gerrit
Forgive me if I've misunderstood regular expressions in Emacs or
Org-mode in some fundamental way!
I have some tags which begin "CD" followed by a number. For example
* Tagged Heading :CD123:
When I ask for a sparse tree of all tags beginning with "CD", I do
'C-c / T'
And ask for tags of
{^CD.*}
This doesn't return any of the tagged headlines, but this does:
{^cd.*}
Is this a bug, or my misunderstanding? Obviously this is no
show-stopper, I just make sure that all my regexp searches are in lower
case, but thought I'd check.
--
Chris Randle
Windows XP SP3 - GNU Emacs 22.1.1 - Org-mode 6.06b
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Case-sensitivity in regular expressions and sparse trees for tags
2008-09-17 19:38 Case-sensitivity in regular expressions and sparse trees for tags Chris Randle
@ 2008-09-18 15:43 ` Carsten Dominik
2008-09-19 6:09 ` Carsten Dominik
0 siblings, 1 reply; 3+ messages in thread
From: Carsten Dominik @ 2008-09-18 15:43 UTC (permalink / raw)
To: Chris Randle; +Cc: emacs-orgmode
Hi Chris,
On Sep 17, 2008, at 9:38 PM, Chris Randle wrote:
> Hi Gerrit
>
> Forgive me if I've misunderstood regular expressions in Emacs or
> Org-mode in some fundamental way!
>
> I have some tags which begin "CD" followed by a number. For example
>
> * Tagged Heading :CD123:
>
> When I ask for a sparse tree of all tags beginning with "CD", I do
>
> 'C-c / T'
>
> And ask for tags of
>
> {^CD.*}
>
> This doesn't return any of the tagged headlines, but this does:
>
> {^cd.*}
>
> Is this a bug, or my misunderstanding? Obviously this is no
> show-stopper, I just make sure that all my regexp searches are in
> lower
> case, but thought I'd check.
It may be a bug, and a misunderstanding.
1. I do downcase all tage before they are tested in the matcher.
2. This seems to indicate that I do want the matching to be case-
insensitive.
3. I do set case-fold-search to nil, which seems to contradict (2)
For now, I recommend to write all regexps with lower case letters. I
need to try to remember why I did not set case-fold-search.
Thanks for the report.
- Carsten
>
>
> --
> Chris Randle
> Windows XP SP3 - GNU Emacs 22.1.1 - Org-mode 6.06b
>
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Remember: use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Case-sensitivity in regular expressions and sparse trees for tags
2008-09-18 15:43 ` Carsten Dominik
@ 2008-09-19 6:09 ` Carsten Dominik
0 siblings, 0 replies; 3+ messages in thread
From: Carsten Dominik @ 2008-09-19 6:09 UTC (permalink / raw)
To: Carsten Dominik; +Cc: emacs-orgmode
On Sep 18, 2008, at 5:43 PM, Carsten Dominik wrote:
> Hi Chris,
>
> On Sep 17, 2008, at 9:38 PM, Chris Randle wrote:
>
>> Hi Gerrit
>>
>> Forgive me if I've misunderstood regular expressions in Emacs or
>> Org-mode in some fundamental way!
>>
>> I have some tags which begin "CD" followed by a number. For example
>>
>> * Tagged Heading :CD123:
>>
>> When I ask for a sparse tree of all tags beginning with "CD", I do
>>
>> 'C-c / T'
>>
>> And ask for tags of
>>
>> {^CD.*}
>>
>> This doesn't return any of the tagged headlines, but this does:
>>
>> {^cd.*}
>>
>> Is this a bug, or my misunderstanding? Obviously this is no
>> show-stopper, I just make sure that all my regexp searches are in
>> lower
>> case, but thought I'd check.
>
> It may be a bug, and a misunderstanding.
>
> 1. I do downcase all tage before they are tested in the matcher.
> 2. This seems to indicate that I do want the matching to be case-
> insensitive.
> 3. I do set case-fold-search to nil, which seems to contradict (2)
>
>
> For now, I recommend to write all regexps with lower case letters.
> I need to try to remember why I did not set case-fold-search.
I am pushing a fix today which will mkae sure that tags matching is
truly case insensitive. So that should make your old regexp work again.
- Carsten
^ permalink raw reply [flat|nested] 3+ messages in thread
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2008-09-17 19:38 Case-sensitivity in regular expressions and sparse trees for tags Chris Randle
2008-09-18 15:43 ` Carsten Dominik
2008-09-19 6:09 ` Carsten Dominik
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