[emacs-wiki-discuss] bug in planner-mhe.el design

[pll+ew]

Hi, 

It appears that planner-mhe uses the folder msg number, not the
Message-id to link to.  This is bad, because as an mh folder 
gets compacted (due to deleting/moving msgs) the folder msg 
number changes. 

It appears there's a defun planner-mhe-get-message-num which calls
mh-get-msg-num.  Ny guess is that it perhaps mh-e lacks a defun which
returns the real Message-id: header value. 

A brief survey of the mh-utils.el file seems to verify this.  
However, it should be possible to obtain the Message-id: of a given 
message faily easily, then search for that message-id within a folder.

The mh command line utility 'pick' provides a --component option, 
which can be used like this:

 pick [+folder] --component <regex>

e.g:  pick +Inbox --Message-id 'address@hidden'

and will properly return the correct folder message number.  If that 
folder msg number changes, the above pick command will always return 
the currenly correct folder messgge number associated with that 
Message-id.

I have no idea how to code the lisp to accomplish this, I'm hoping 
someone else does :)


-- 
Seeya,
Paul

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