From: Reiner Steib Date: Thu, 10 May 2007 18:44:01 +0000 (+0000) Subject: (Running NNDiary): Use ~/.gnus.el instead of gnusrc. X-Git-Tag: emacs-pretest-22.0.990~52 X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=a85126764b5adf12e0e92527736d11115070b6f3;p=emacs.git (Running NNDiary): Use ~/.gnus.el instead of gnusrc. (Email Based Diary): New. Proper documentation for the nndiary back end and the gnus-diary library. --- diff --git a/man/ChangeLog b/man/ChangeLog index f4971973846..10775aa6c43 100644 --- a/man/ChangeLog +++ b/man/ChangeLog @@ -1,3 +1,12 @@ +2007-05-10 Reiner Steib + + * gnus.texi (Running NNDiary): Use ~/.gnus.el instead of gnusrc. + +2007-05-10 Didier Verna + + * gnus.texi (Email Based Diary): New. Proper documentation for the + nndiary back end and the gnus-diary library. + 2007-05-05 Francesco Potort,Al(B * maintaining.texi (Create Tags Table): Add text about the dangers of diff --git a/man/gnus.texi b/man/gnus.texi index 48ecd630265..dc02efa766f 100644 --- a/man/gnus.texi +++ b/man/gnus.texi @@ -623,6 +623,7 @@ Select Methods * IMAP:: Using Gnus as a @acronym{IMAP} client. * Other Sources:: Reading directories, files, SOUP packets. * Combined Groups:: Combining groups into one group. +* Email Based Diary:: Using mails to manage diary events in Gnus. * Gnus Unplugged:: Reading news and mail offline. Server Buffer @@ -720,6 +721,25 @@ Combined Groups * Virtual Groups:: Combining articles from many groups. * Kibozed Groups:: Looking through parts of the newsfeed for articles. +Email Based Diary + +* The NNDiary Back End:: Basic setup and usage. +* The Gnus Diary Library:: Utility toolkit on top of nndiary. +* Sending or Not Sending:: A final note on sending diary messages. + +The NNDiary Back End + +* Diary Messages:: What makes a message valid for nndiary. +* Running NNDiary:: NNDiary has two modes of operation. +* Customizing NNDiary:: Bells and whistles. + +The Gnus Diary Library + +* Diary Summary Line Format:: A nicer summary buffer line format. +* Diary Articles Sorting:: A nicer way to sort messages. +* Diary Headers Generation:: Not doing it manually. +* Diary Group Parameters:: Not handling them manually. + Gnus Unplugged * Agent Basics:: How it all is supposed to work. @@ -8148,8 +8168,8 @@ Some variables to customize the citation highlights: @vindex gnus-cite-parse-max-size @item gnus-cite-parse-max-size -If the article size if bigger than this variable (which is 25000 by -default), no citation highlighting will be performed. +If the article size in bytes is bigger than this variable (which is +25000 by default), no citation highlighting will be performed. @item gnus-cite-max-prefix @vindex gnus-cite-max-prefix @@ -12343,6 +12363,7 @@ The different methods all have their peculiarities, of course. * IMAP:: Using Gnus as a @acronym{IMAP} client. * Other Sources:: Reading directories, files, SOUP packets. * Combined Groups:: Combining groups into one group. +* Email Based Diary:: Using mails to manage diary events in Gnus. * Gnus Unplugged:: Reading news and mail offline. @end menu @@ -17878,6 +17899,381 @@ Articles marked as read in the @code{nnkiboze} group will have their @acronym{NOV} lines removed from the @acronym{NOV} file. +@node Email Based Diary +@section Email Based Diary +@cindex diary +@cindex email based diary +@cindex calendar + +This section describes a special mail back end called @code{nndiary}, +and its companion library @code{gnus-diary}. It is ``special'' in the +sense that it is not meant to be one of the standard alternatives for +reading mail with Gnus. See @ref{Choosing a Mail Back End} for that. +Instead, it is used to treat @emph{some} of your mails in a special way, +namely, as event reminders. + +Here is a typical scenario: + +@itemize @bullet +@item +You've got a date with Andy Mc Dowell or Bruce Willis (select according +to your sexual preference) in one month. You don't want to forget it. +@item +So you send a ``reminder'' message (actually, a diary one) to yourself. +@item +You forget all about it and keep on getting and reading new mail, as usual. +@item +From time to time, as you type `g' in the group buffer and as the date +is getting closer, the message will pop up again to remind you of your +appointment, just as if it were new and unread. +@item +Read your ``new'' messages, this one included, and start dreaming again +of the night you're gonna have. +@item +Once the date is over (you actually fell asleep just after dinner), the +message will be automatically deleted if it is marked as expirable. +@end itemize + +The Gnus Diary back end has the ability to handle regular appointments +(that wouldn't ever be deleted) as well as punctual ones, operates as a +real mail back end and is configurable in many ways. All of this is +explained in the sections below. + +@menu +* The NNDiary Back End:: Basic setup and usage. +* The Gnus Diary Library:: Utility toolkit on top of nndiary. +* Sending or Not Sending:: A final note on sending diary messages. +@end menu + + +@node The NNDiary Back End +@subsection The NNDiary Back End +@cindex nndiary +@cindex the nndiary back end + +@code{nndiary} is a back end very similar to @code{nnml} (@pxref{Mail +Spool}). Actually, it could appear as a mix of @code{nnml} and +@code{nndraft}. If you know @code{nnml}, you're already familiar with +the message storing scheme of @code{nndiary}: one file per message, one +directory per group. + + Before anything, there is one requirement to be able to run +@code{nndiary} properly: you @emph{must} use the group timestamp feature +of Gnus. This adds a timestamp to each group's parameters. @ref{Group +Timestamp} to see how it's done. + +@menu +* Diary Messages:: What makes a message valid for nndiary. +* Running NNDiary:: NNDiary has two modes of operation. +* Customizing NNDiary:: Bells and whistles. +@end menu + +@node Diary Messages +@subsubsection Diary Messages +@cindex nndiary messages +@cindex nndiary mails + +@code{nndiary} messages are just normal ones, except for the mandatory +presence of 7 special headers. These headers are of the form +@code{X-Diary-}, @code{} being one of +@code{Minute}, @code{Hour}, @code{Dom}, @code{Month}, @code{Year}, +@code{Time-Zone} and @code{Dow}. @code{Dom} means ``Day of Month'', and +@code{dow} means ``Day of Week''. These headers actually behave like +crontab specifications and define the event date(s): + +@itemize @bullet +@item +For all headers except the @code{Time-Zone} one, a header value is +either a star (meaning all possible values), or a list of fields +(separated by a comma). +@item +A field is either an integer, or a range. +@item +A range is two integers separated by a dash. +@item +Possible integer values are 0--59 for @code{Minute}, 0--23 for +@code{Hour}, 1--31 for @code{Dom}, 1--12 for @code{Month}, above 1971 +for @code{Year} and 0--6 for @code{Dow} (0 meaning Sunday). +@item +As a special case, a star in either @code{Dom} or @code{Dow} doesn't +mean ``all possible values'', but ``use only the other field''. Note +that if both are star'ed, the use of either one gives the same result. +@item +The @code{Time-Zone} header is special in that it can only have one +value (@code{GMT}, for instance). A star doesn't mean ``all possible +values'' (because it makes no sense), but ``the current local time +zone''. Most of the time, you'll be using a star here. However, for a +list of available time zone values, see the variable +@code{nndiary-headers}. +@end itemize + +As a concrete example, here are the diary headers to add to your message +for specifying ``Each Monday and each 1st of month, at 12:00, 20:00, +21:00, 22:00, 23:00 and 24:00, from 1999 to 2010'' (I'll let you find +what to do then): + +@example +X-Diary-Minute: 0 +X-Diary-Hour: 12, 20-24 +X-Diary-Dom: 1 +X-Diary-Month: * +X-Diary-Year: 1999-2010 +X-Diary-Dow: 1 +X-Diary-Time-Zone: * +@end example + +@node Running NNDiary +@subsubsection Running NNDiary +@cindex running nndiary +@cindex nndiary operation modes + +@code{nndiary} has two modes of operation: ``traditional'' (the default) +and ``autonomous''. In traditional mode, @code{nndiary} does not get new +mail by itself. You have to move (@kbd{B m}) or copy (@kbd{B c}) mails +from your primary mail back end to nndiary groups in order to handle them +as diary messages. In autonomous mode, @code{nndiary} retrieves its own +mail and handles it independently from your primary mail back end. + +One should note that Gnus is not inherently designed to allow several +``master'' mail back ends at the same time. However, this does make +sense with @code{nndiary}: you really want to send and receive diary +messages to your diary groups directly. So, @code{nndiary} supports +being sort of a ``second primary mail back end'' (to my knowledge, it is +the only back end offering this feature). However, there is a limitation +(which I hope to fix some day): respooling doesn't work in autonomous +mode. + +In order to use @code{nndiary} in autonomous mode, you have several +things to do: + +@itemize @bullet +@item +Allow @code{nndiary} to retrieve new mail by itself. Put the following +line in your @file{~/.gnus.el} file: + +@lisp +(setq nndiary-get-new-mail t) +@end lisp +@item +You must arrange for diary messages (those containing @code{X-Diary-*} +headers) to be split in a private folder @emph{before} Gnus treat them. +Again, this is needed because Gnus cannot (yet ?) properly handle +multiple primary mail back ends. Getting those messages from a separate +source will compensate this misfeature to some extent. + +As an example, here's my procmailrc entry to store diary files in +@file{~/.nndiary} (the default @code{nndiary} mail source file): + +@example +:0 HD : +* ^X-Diary +.nndiary +@end example +@end itemize + +Once this is done, you might want to customize the following two options +that affect the diary mail retrieval and splitting processes: + +@defvar nndiary-mail-sources +This is the diary-specific replacement for the standard +@code{mail-sources} variable. It obeys the same syntax, and defaults to +@code{(file :path "~/.nndiary")}. +@end defvar + +@defvar nndiary-split-methods +This is the diary-specific replacement for the standard +@code{nnmail-split-methods} variable. It obeys the same syntax. +@end defvar + + Finally, you may add a permanent @code{nndiary} virtual server +(something like @code{(nndiary "diary")} should do) to your +@code{gnus-secondary-select-methods}. + + Hopefully, almost everything (see the TODO section in +@file{nndiary.el}) will work as expected when you restart Gnus: in +autonomous mode, typing @kbd{g} and @kbd{M-g} in the group buffer, will +also get your new diary mails and split them according to your +diary-specific rules, @kbd{F} will find your new diary groups etc. + +@node Customizing NNDiary +@subsubsection Customizing NNDiary +@cindex customizing nndiary +@cindex nndiary customization + +Now that @code{nndiary} is up and running, it's time to customize it. +The custom group is called @code{nndiary} (no, really ?!). You should +browse it to figure out which options you'd like to tweak. The following +two variables are probably the only ones you will want to change: + +@defvar nndiary-reminders +This is the list of times when you want to be reminded of your +appointements (e.g. 3 weeks before, then 2 days before, then 1 hour +before and that's it). Remember that ``being reminded'' means that the +diary message will pop up as brand new and unread again when you get new +mail. +@end defvar + +@defvar nndiary-week-starts-on-monday +Rather self-explanatory. Otherwise, Sunday is assumed (this is the +default). +@end defvar + + +@node The Gnus Diary Library +@subsection The Gnus Diary Library +@cindex gnus-diary +@cindex the gnus diary library + +Using @code{nndiary} manually (I mean, writing the headers by hand and +so on) would be rather boring. Fortunately, there is a library called +@code{gnus-diary} written on top of @code{nndiary}, that does many +useful things for you. + + In order to use it, add the following line to your @file{~/.gnus.el} file: + +@lisp +(require 'gnus-diary) +@end lisp + + Also, you shouldn't use any @code{gnus-user-format-function-[d|D]} +(@pxref{Summary Buffer Lines}). @code{gnus-diary} provides both of these +(sorry if you used them before). + + +@menu +* Diary Summary Line Format:: A nicer summary buffer line format. +* Diary Articles Sorting:: A nicer way to sort messages. +* Diary Headers Generation:: Not doing it manually. +* Diary Group Parameters:: Not handling them manually. +@end menu + +@node Diary Summary Line Format +@subsubsection Diary Summary Line Format +@cindex diary summary buffer line +@cindex diary summary line format + +Displaying diary messages in standard summary line format (usually +something like @samp{From Joe: Subject}) is pretty useless. Most of +the time, you're the one who wrote the message, and you mostly want to +see the event's date. + + @code{gnus-diary} provides two supplemental user formats to be used in +summary line formats. @code{D} corresponds to a formatted time string +for the next occurrence of the event (e.g. ``Sat, Sep 22 01, 12:00''), +while @code{d} corresponds to an approximative remaining time until the +next occurrence of the event (e.g. ``in 6 months, 1 week''). + + For example, here's how Joe's birthday is displayed in my +@code{nndiary+diary:birthdays} summary buffer (note that the message is +expirable, but will never be deleted, as it specifies a periodic event): + +@example + E Sat, Sep 22 01, 12:00: Joe's birthday (in 6 months, 1 week) +@end example + +In order to get something like the above, you would normally add the +following line to your diary groups'parameters: + +@lisp +(gnus-summary-line-format "%U%R%z %uD: %(%s%) (%ud)\n") +@end lisp + +However, @code{gnus-diary} does it automatically (@pxref{Diary Group +Parameters}). You can however customize the provided summary line format +with the following user options: + +@defvar gnus-diary-summary-line-format +Defines the summary line format used for diary groups (@pxref{Summary +Buffer Lines}). @code{gnus-diary} uses it to automatically update the +diary groups'parameters. +@end defvar + +@defvar gnus-diary-time-format +Defines the format to display dates in diary summary buffers. This is +used by the @code{D} user format. See the docstring for details. +@end defvar + +@defvar gnus-diary-delay-format-function +Defines the format function to use for displaying delays (remaining +times) in diary summary buffers. This is used by the @code{d} user +format. There are currently built-in functions for English and French; +you can also define your own. See the docstring for details. +@end defvar + +@node Diary Articles Sorting +@subsubsection Diary Articles Sorting +@cindex diary articles sorting +@cindex diary summary lines sorting +@findex gnus-summary-sort-by-schedule +@findex gnus-thread-sort-by-schedule +@findex gnus-article-sort-by-schedule + +@code{gnus-diary} provides new sorting functions (@pxref{Sorting the +Summary Buffer} ) called @code{gnus-summary-sort-by-schedule}, +@code{gnus-thread-sort-by-schedule} and +@code{gnus-article-sort-by-schedule}. These functions let you organize +your diary summary buffers from the closest event to the farthest one. + +@code{gnus-diary} automatically installs +@code{gnus-summary-sort-by-schedule} as a menu item in the summary +buffer's ``sort'' menu, and the two others as the primary (hence +default) sorting functions in the group parameters (@pxref{Diary Group +Parameters}). + +@node Diary Headers Generation +@subsubsection Diary Headers Generation +@cindex diary headers generation +@findex gnus-diary-check-message + +@code{gnus-diary} provides a function called +@code{gnus-diary-check-message} to help you handle the @code{X-Diary-*} +headers. This function ensures that the current message contains all the +required diary headers, and prompts you for values or corrections if +needed. + + This function is hooked into the @code{nndiary} back end, so that +moving or copying an article to a diary group will trigger it +automatically. It is also bound to @kbd{C-c D c} in @code{message-mode} +and @code{article-edit-mode} in order to ease the process of converting +a usual mail to a diary one. + + This function takes a prefix argument which will force prompting of +all diary headers, regardless of their presence or validity. That way, +you can very easily reschedule an already valid diary message, for +instance. + +@node Diary Group Parameters +@subsubsection Diary Group Parameters +@cindex diary group parameters + +When you create a new diary group, or visit one, @code{gnus-diary} +automatically checks your group parameters and if needed, sets the +summary line format to the diary-specific value, installs the +diary-specific sorting functions, and also adds the different +@code{X-Diary-*} headers to the group's posting-style. It is then easier +to send a diary message, because if you use @kbd{C-u a} or @kbd{C-u m} +on a diary group to prepare a message, these headers will be inserted +automatically (although not filled with proper values yet). + +@node Sending or Not Sending +@subsection Sending or Not Sending + +Well, assuming you've read of of the above, here are two final notes on +mail sending with @code{nndiary}: + +@itemize @bullet +@item +@code{nndiary} is a @emph{real} mail back end. You really send real diary +messsages for real. This means for instance that you can give +appointements to anybody (provided they use Gnus and @code{nndiary}) by +sending the diary message to them as well. +@item +However, since @code{nndiary} also has a @code{request-post} method, you +can also use @kbd{C-u a} instead of @kbd{C-u m} on a diary group and the +message won't actually be sent; just stored locally in the group. This +comes in very handy for private appointments. +@end itemize + @node Gnus Unplugged @section Gnus Unplugged @cindex offline