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mu4e.texi: add hint about getting fields from raw messages 

from a mailing-list reply, a quick & dirty way to get arbitrary headers
from a message.
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djcb 2014-09-02 05:15:25 -07:00
parent 08bd686903
commit 068e459cc4
1 changed files with 29 additions and 9 deletions
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38
mu4e/mu4e.texi
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@ -2345,19 +2345,21 @@ kinds of assumptions, and they are subject to change, and should therefore
@end verbatim
@noindent
In addition, you should use functions in the right context; functions that
start with @t{mu4e-view-} are only applicable to the message view, while
functions starting with @t{mu4e-headers-} are only applicable to the headers
view. Functions without such prefixes are applicable everywhere.
In addition, you should use functions in the right context; functions
that start with @t{mu4e-view-} are only applicable to the message view,
while functions starting with @t{mu4e-headers-} are only applicable to
the headers view. Functions without such prefixes are applicable
everywhere.
@node Message functions
@section Message functions
Many functions in @t{mu4e} deal with message plist (property lists). They
contain information about messages, such as sender and recipient, subject,
date and so on. To deal with these plists, there are a number of
@code{mu4e-message-} functions (in @file{mu4e-message.el}), such as
@code{mu4e-message-field} and @code{mu4e-message-at-point}
Many functions in @t{mu4e} deal with message plist (property
lists). They contain information about messages, such as sender and
recipient, subject, date and so on. To deal with these plists, there are
a number of @code{mu4e-message-} functions (in @file{mu4e-message.el}),
such as @code{mu4e-message-field} and @code{mu4e-message-at-point}, and
a shortcut to combine the two, @code{mu4e-message-field-at-point}.
For example, to get the subject of the message at point, in either the headers
view or the message view, you could write:
@ -2380,6 +2382,24 @@ recipients of the message?''), there is a convenience function
headers view.
@end itemize
Note that the message-functions work available to @t{mu4e} -- the
headers that are stored in the database and, in
@code{mu4e-message-view}-context, the message body.
If you need access to other parts of the message, it is possible to do
so by hand, using the raw-message and some third-party tool like
@t{procmail}'s @t{formail}:
@lisp
(defun my-mu4e-any-message-field-at-point (hdr)
"Quick & dirty way to get an arbitrary header HDR at
point. Requires the 'formail' tool from procmail."
(replace-regexp-in-string "\n$" ""
(shell-command-to-string
(concat "formail -x " hdr " -c < "
(shell-quote-argument (mu4e-message-field-at-point :path))))))
@end lisp
@node Utility functions
@section Utility functions