Filling a string?

Filling a string?

[Marcin Borkowski]

Hi all,

so I want part of the buffer to have wrapped lines (preferably at word
boundaries), and part to have not (like having toggle-truncate lines
only for a region).  I suspect this is not possible, so my next bet is
to have a filling function for a string (so that I can fill it before
inserting into a buffer).  Is there anything like that in Emacs or
should I just use a temp buffer and the built-in filling functions?

TIA,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University

Re: Filling a string?

[Tassilo Horn]

Marcin Borkowski <mbork@mbork.pl> writes:

Hi Marcin,

> so I want part of the buffer to have wrapped lines (preferably at word
> boundaries), and part to have not (like having toggle-truncate lines
> only for a region).  I suspect this is not possible

Can't you just insert unwrapped lines and use `fill-region' on the parts
you want to have wrapped?

Bye,
Tassilo

Re: Filling a string?

[Vaidheeswaran C]

On Friday 17 July 2015 01:41 PM, Tassilo Horn wrote:
> Marcin Borkowski <mbork@mbork.pl> writes:
> 
> Hi Marcin,
> 
>> > so I want part of the buffer to have wrapped lines (preferably at word
>> > boundaries), and part to have not (like having toggle-truncate lines
>> > only for a region).  I suspect this is not possible
> Can't you just insert unwrapped lines and use `fill-region' on the parts
> you want to have wrapped?

I have a feeling that he wants the "fill" to be "soft" on certain
paragraphs of his choosing.  The only mode that I know of where in
Emacs "persists" text properties is "Enriched Mode".

    (info "(emacs) Hard and Soft Newlines")

In other words, the user wants to configure right/left margins and
importantly the width of the text area on per-paragraph basis. In the
actual file, a paragraph will have no newline at all howsoever it may
be displayed.

> Bye,
> Tassilo
> 
> 

Re: Filling a string?

[Tassilo Horn]

Vaidheeswaran C <vaidheeswaran.chinnaraju@gmail.com> writes:

>>> > so I want part of the buffer to have wrapped lines (preferably at
>>> > word boundaries), and part to have not (like having
>>> > toggle-truncate lines only for a region).  I suspect this is not
>>> > possible
>> Can't you just insert unwrapped lines and use `fill-region' on the
>> parts you want to have wrapped?
>
> I have a feeling that he wants the "fill" to be "soft" on certain
> paragraphs of his choosing.  The only mode that I know of where in
> Emacs "persists" text properties is "Enriched Mode".
>
>     (info "(emacs) Hard and Soft Newlines")
>
> In other words, the user wants to configure right/left margins and
> importantly the width of the text area on per-paragraph basis. In the
> actual file, a paragraph will have no newline at all howsoever it may
> be displayed.

Ah, ok.  I think it's possible, too.  There are left-margin and
right-margin text properties.

,----[ (info "(elisp)Format Properties") ]
| These text properties affect the behavior of the fill commands.  They
| are used for representing formatted text.  *Note Filling::, and *note
| Margins::.
| 
| [...]
| 
| ‘right-margin’
|      This property specifies an extra right margin for filling this part
|      of the text.
| 
| ‘left-margin’
|      This property specifies an extra left margin for filling this part
|      of the text.
`----

So possibly adding these properties to some paragraphs in your buffer +
`visual-line-mode' might do the trick.

Bye,
Tassilo

Re: Filling a string?

[Tassilo Horn]

Tassilo Horn <tsdh@gnu.org> writes:

> Ah, ok.  I think it's possible, too.  There are left-margin and
> right-margin text properties.
>
> ,----[ (info "(elisp)Format Properties") ]
> | These text properties affect the behavior of the fill commands.  They
> | are used for representing formatted text.  *Note Filling::, and *note
> | Margins::.
> | 
> | [...]
> | 
> | ‘right-margin’
> |      This property specifies an extra right margin for filling this part
> |      of the text.
> | 
> | ‘left-margin’
> |      This property specifies an extra left margin for filling this part
> |      of the text.
> `----
>
> So possibly adding these properties to some paragraphs in your buffer
> + `visual-line-mode' might do the trick.

I just had some time to test this, and sadly it seems to apply only to
hard filling with `fill-paragraph' and friends.

Bye,
Tassilo

Re: Filling a string?

[Emanuel Berg]

Marcin Borkowski <mbork@mbork.pl> writes:

> so I want part of the buffer to have wrapped lines
> (preferably at word boundaries), and part to have
> not (like having toggle-truncate lines only for
> a region).

Can't you just enable/disable filling in the portions
where it is desired/undesired?

> , so my next bet is to have a filling function for
> a string (so that I can fill it before inserting
> into a buffer). Is there anything like that in Emacs
> or should I just use a temp buffer and the built-in
> filling functions?

Make a region and then `fill-region'!

-- 
underground experts united
http://user.it.uu.se/~embe8573

Re: Filling a string?

[Pascal J. Bourguignon]

Marcin Borkowski <mbork@mbork.pl> writes:

> Hi all,
>
> so I want part of the buffer to have wrapped lines (preferably at word
> boundaries), and part to have not (like having toggle-truncate lines
> only for a region).  I suspect this is not possible, so my next bet is
> to have a filling function for a string (so that I can fill it before
> inserting into a buffer).  Is there anything like that in Emacs or
> should I just use a temp buffer and the built-in filling functions?

You can use set-justification-left et al. to insert newlines in paragraph (and refill a paragraph).

You can use set-justification-left et al. to insert newlines in
paragraph (and refill a paragraph).

So you can have both kind of paragraphs in the same buffer.

You can reset the justification after inserting the string in the
buffer.  If you do that by program, you may use the set-justification
function.

-- 
__Pascal Bourguignon__                 http://www.informatimago.com/
“The factory of the future will have only two employees, a man and a
dog. The man will be there to feed the dog. The dog will be there to
keep the man from touching the equipment.” -- Carl Bass CEO Autodesk