bug#1507: marked as done (move-end-of-line inline doc unclear. (intangibility))

[Emacs bug Tracking System]

Your message dated Sun, 04 Jan 2009 03:12:18 -0500
with message-id <87d4f3qyl9.fsf@cyd.mit.edu>
and subject line Re: move-end-of-line inline doc unclear. (intangibility)
has caused the Emacs bug report #1507,
regarding move-end-of-line inline doc unclear. (intangibility)
to be marked as done.

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If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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-- 
1507: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=1507
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> --- Begin Message ---
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> Subject: 
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> move-end-of-line inline doc unclear. (intangibility)
>
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> Date: 
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> Sat, 6 Dec 2008 15:58:54 -0800
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>
>
> it seems to me that the move-end-of-line inline doc is unclear.
>
> in the inline doc for move-end-of-line, it says:
>
> «
> move-end-of-line is an interactive compiled Lisp function in  
> `simple.el'.
> It is bound to M-D.
> (move-end-of-line arg)
>
> Move point to end of current line as displayed.
> (If there's an image in the line, this disregards newlines
> which are part of the text that the image rests on.)
>
> With argument arg not nil or 1, move forward arg - 1 lines first.
> If point reaches the beginning or end of buffer, it stops there.
> To ignore intangibility, bind `inhibit-point-motion-hooks' to t.
> »
>
>
> • It is not clear to me what this sentence means: “(If there's an  
> image in the line, this disregards newlines which are part of the  
> text that the image rests on.)” So, if there is a image on the  
> current line... i don't know what it means to say it disregard  
> newline, because to me eol char is at the end of line...
>
> • the last paragraph about intangibility is unclear. (i don't  
> understand what it means. Looking up on that hook var didn't help much.)
>
> • am not sure if move-end-of-line should be used in elisp code,  
> which is my primary query. If this function is not suitable in elisp  
> code, perhaps the doc should say.
>
> similar in move-beginning-of-line.
>
>   Xah
> ∑ http://xahlee.org/
>
> ☄
>
>
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: move-end-of-line inline doc unclear. (intangibility)
>
>
>
>
> Date: 
>
> Sun, 04 Jan 2009 03:12:18 -0500
>
>
>
>
> > It is not clear to me what this sentence means: “(If there's an image
> > in the line, this disregards newlines which are part of the text that
> > the image rests on.)” So, if there is a image on the current line... i
> > don't know what it means to say it disregard newline, because to me
> > eol char is at the end of line...
>
> Whenever a range of text contains a text or overlay property with a
> `display' property that specifies an image to display, Emacs displays
> that image instead of displaying the range of text in the usual way.
> Hence, move-end-of-line ignores newlines in that range of text, because
> it is not displayed as the end of a line (it is "hidden" inside the
> image).
>
> > the last paragraph about intangibility is unclear. (i don't understand
> > what it means. Looking up on that hook var didn't help much.)
>
> Unfortunately, it's not feasible to explain the effects of every single
> text or overlay property in docstrings.  The role of the `intangible'
> property is explained in the "Special Properties" node of the Emacs Lisp
> reference manual.
>
> > am not sure if move-end-of-line should be used in elisp code, which is
> > my primary query. If this function is not suitable in elisp code,
> > perhaps the doc should say.
>
> This function is suitable for use in elisp code, provided one keeps in
> mind that it moves to the end of line *as displayed*, i.e., taking
> things like text properties into account, exactly as C-e does.  This may
> or may not be what you want in a Lisp program.
>
>
> --- End Message ---