* accessing article information
@ 2011-07-06 8:17 lee
2011-07-19 16:16 ` Lars Magne Ingebrigtsen
0 siblings, 1 reply; 5+ messages in thread
From: lee @ 2011-07-06 8:17 UTC (permalink / raw)
To: ding
Hi,
how do you access information about an article from within a
`gnus-user-format-function-*' called when generating the summary buffer?
The documentation says:
,---- [ info (gnus) Summary Buffer Lines ]
| `u'
| User defined specifier. The next character in the format string
| should be a letter. Gnus will call the function
| `gnus-user-format-function-X', where X is the letter following
| `%u'. The function will be passed the current header as argument.
| The function should return a string, which will be inserted into
| the summary just like information from any other summary specifier.
`----
What does the header passed to the function look like?
What I'm trying to do is to write a function to display article marks:
(defun gnus-user-format-function-M (header)
(let ( (str "#") )
(if (equal gnus-tmp-unread gnus-unread-mark)
(setq str (concat str "U"))
(setq str (concat str "~")))
(if (equal gnus-tmp-read gnus-read-mark)
(setq str (concat str "R"))
(setq str (concat str "~")))))
This function doesn't work. When I try to enter a group that calls it via
"%uM" in `gnus-summary-line-format', gnus says "no unread news".
Remove the second "if" statement and it works. I've searched the
documentation, looked at the source and googled, and I haven't found out
what's available in the ominous header passed to the function.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: accessing article information
2011-07-06 8:17 accessing article information lee
@ 2011-07-19 16:16 ` Lars Magne Ingebrigtsen
2011-07-19 18:24 ` lee
0 siblings, 1 reply; 5+ messages in thread
From: Lars Magne Ingebrigtsen @ 2011-07-19 16:16 UTC (permalink / raw)
To: ding
lee <lee@yun.yagibdah.de> writes:
> how do you access information about an article from within a
> `gnus-user-format-function-*' called when generating the summary buffer?
> The documentation says:
>
> ,---- [ info (gnus) Summary Buffer Lines ]
> | `u'
> | User defined specifier. The next character in the format string
> | should be a letter. Gnus will call the function
> | `gnus-user-format-function-X', where X is the letter following
> | `%u'. The function will be passed the current header as argument.
> | The function should return a string, which will be inserted into
> | the summary just like information from any other summary specifier.
> `----
>
> What does the header passed to the function look like?
It's a header vector. Use `mail-header-number' etc to access the slots.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog http://lars.ingebrigtsen.no/
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: accessing article information
2011-07-19 16:16 ` Lars Magne Ingebrigtsen
@ 2011-07-19 18:24 ` lee
2011-07-19 18:27 ` Lars Magne Ingebrigtsen
0 siblings, 1 reply; 5+ messages in thread
From: lee @ 2011-07-19 18:24 UTC (permalink / raw)
To: ding
Lars Magne Ingebrigtsen <larsi@gnus.org> writes:
> lee <lee@yun.yagibdah.de> writes:
>
>> how do you access information about an article from within a
>> `gnus-user-format-function-*' called when generating the summary buffer?
>> The documentation says:
>>
>> ,---- [ info (gnus) Summary Buffer Lines ]
>> | `u'
>> | User defined specifier. The next character in the format string
>> | should be a letter. Gnus will call the function
>> | `gnus-user-format-function-X', where X is the letter following
>> | `%u'. The function will be passed the current header as argument.
>> | The function should return a string, which will be inserted into
>> | the summary just like information from any other summary specifier.
>> `----
>>
>> What does the header passed to the function look like?
>
> It's a header vector. Use `mail-header-number' etc to access the slots.
Thanks! When I look at the macros defined in nnheader.el, there don't
seem to be any macros to access the marks an article has. Can I use
`gnus-summary-article-mark' as defined in gnus-sum.el in a
`gnus-user-format-function-*' to find out the marks?
Hm, looking at the .marks files, where does gnus store marks like
killed, caught up with, etc.?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: accessing article information
2011-07-19 18:24 ` lee
@ 2011-07-19 18:27 ` Lars Magne Ingebrigtsen
2011-07-19 22:50 ` lee
0 siblings, 1 reply; 5+ messages in thread
From: Lars Magne Ingebrigtsen @ 2011-07-19 18:27 UTC (permalink / raw)
To: ding
lee <lee@yun.yagibdah.de> writes:
> Thanks! When I look at the macros defined in nnheader.el, there don't
> seem to be any macros to access the marks an article has.
The marks aren't in the header vector.
> Can I use `gnus-summary-article-mark' as defined in gnus-sum.el in a
> `gnus-user-format-function-*' to find out the marks?
I think so.
> Hm, looking at the .marks files, where does gnus store marks like
> killed, caught up with, etc.?
In the .newsrc.eld file.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog http://lars.ingebrigtsen.no/
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: accessing article information
2011-07-19 18:27 ` Lars Magne Ingebrigtsen
@ 2011-07-19 22:50 ` lee
0 siblings, 0 replies; 5+ messages in thread
From: lee @ 2011-07-19 22:50 UTC (permalink / raw)
To: ding
Lars Magne Ingebrigtsen <larsi@gnus.org> writes:
> lee <lee@yun.yagibdah.de> writes:
>
>> Can I use `gnus-summary-article-mark' as defined in gnus-sum.el in a
>> `gnus-user-format-function-*' to find out the marks?
>
> I think so.
(defun gnus-user-format-function-M (header)
(gnus-summary-article-mark (mail-header-number header)))
... works and yields numbers that correspond to marks. It gives one
number per article, like the one for `gnus-ancient-mark' for read
articles.
>> Hm, looking at the .marks files, where does gnus store marks like
>> killed, caught up with, etc.?
>
> In the .newsrc.eld file.
And how do you access them? I suspect they are the second of the
numbers in `gnus-newsgroup-data' ... but then, what if an article has
several marks ... something to trace further tomorrow. It's always good
to have the sources :)
^ permalink raw reply [flat|nested] 5+ messages in thread
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2011-07-06 8:17 accessing article information lee
2011-07-19 16:16 ` Lars Magne Ingebrigtsen
2011-07-19 18:24 ` lee
2011-07-19 18:27 ` Lars Magne Ingebrigtsen
2011-07-19 22:50 ` lee
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