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Re: Getting the click position in a string
From: |
David Kastrup |
Subject: |
Re: Getting the click position in a string |
Date: |
Tue, 25 Apr 2006 16:55:28 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
address@hidden (Kim F. Storm) writes:
> David Kastrup <address@hidden> writes:
>
>> Hi,
>>
>> I am trying to fix mouse.el so that it can heed follow-link properties
>> in display strings. But it does not appear that the mouse click info
>> gives the requisite position information: there is posn-string, and
>> there is posn-point, but it does not look like there is
>> posn-string-pos or whatever else which would be able to pinpoint the
>> actual position within a string that is used as a display property or
>> before-string or after-string.
>
> It should be there --
>
> posn-string should return a cons ("string" . POS)
Uh, what?
posn-string is a compiled Lisp function in `subr.el'.
(posn-string POSITION)
Return the string object of POSITION, or nil if a buffer position.
POSITION should be a list of the form returned by the `event-start'
and `event-end' functions.
[back]
I am afraid that the help string does not suggest that. "string
object" is not really a well-known term in my book and amounts to a
string in my naive connotations. It appears that indeed a cons is
returned.
Similarly for
posn-object is a compiled Lisp function in `subr.el'.
(posn-object POSITION)
Return the object (image or string) of POSITION.
POSITION should be a list of the form returned by the `event-start'
and `event-end' functions.
[back]
I mean, how is one supposed to guess that "image or string" is
actually going to be a cons?
I am not sure that the name of those functions is well-chosen. But
irrespective of that, the doc strings are less than helpful here. We
need to do something about that.
Personally, I'd have expected posn-object and posn-string to just
return the image or string, and then have a separate posn-offset or
posn-object-pos or so that will deliver the corresponding offset _if_
there is such a one.
That would seem somewhat natural.
Sorry for noticing this only now.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
- Getting the click position in a string, David Kastrup, 2006/04/25
- Re: Getting the click position in a string, Kim F. Storm, 2006/04/25
- Re: Getting the click position in a string,
David Kastrup <=
- Re: Getting the click position in a string, David Kastrup, 2006/04/26
- Re: Getting the click position in a string, Kim F. Storm, 2006/04/26
- Re: Getting the click position in a string, David Kastrup, 2006/04/26
- Re: Getting the click position in a string, David Kastrup, 2006/04/26
- Re: Getting the click position in a string, David Kastrup, 2006/04/26
- Re: Getting the click position in a string, Stefan Monnier, 2006/04/26
- Re: Getting the click position in a string, David Kastrup, 2006/04/27
- Re: Getting the click position in a string, Stefan Monnier, 2006/04/27
- Re: Getting the click position in a string, David Kastrup, 2006/04/27