elispQ: How can I extract text from #("text" ... )

elispQ: How can I extract text from #("text" ... )

[Mirko]

Hi,

I am parsing an xml file using xml.el, and I am getting for attributes
values such as:
 #("Typically only electric field is assigned" 0 41 (face font-lock-
string-face fontified t)))

Now, these are variables of type string. How can I extract just the
text from it?

Thank you,

Mirko

RE: elispQ: How can I extract text from #("text" ... )

[Drew Adams]

> values such as:
>  #("Typically only electric field is assigned" 0 41 (face font-lock-
> string-face fontified t)))
> 
> Now, these are variables of type string. How can I extract just the
> text from it?

You can use function `substring-no-properties' to give you a plain string that
has no face or other properties.

But you might not need to. What do you want to do with the resulting text
(string)?

Re: elispQ: How can I extract text from #("text" ... )

[Mirko]

On Apr 4, 12:14 am, "Drew Adams" <drew.ad...@oracle.com> wrote:
> > values such as:
> >  #("Typically only electric field is assigned" 0 41 (face font-lock-
> > string-face fontified t)))
>
> > Now, these are variables of type string. How can I extract just the
> > text from it?
>
> You can use function `substring-no-properties' to give you a plain string that
> has no face or other properties.
>
> But you might not need to. What do you want to do with the resulting text
> (string)?

Thanks,

I compare its contents to some text strings using string= or insert
them into a buffer.  I am converting a freemind mindmap to a latex
(beamer) file.

Mirko

RE: elispQ: How can I extract text from #("text" ... )

[Drew Adams]

> > > values such as:
> > >  #("Typically only electric field is assigned" 0 41 (face 
> > >  font-lock-string-face fontified t)))
> >
> > > Now, these are variables of type string. How can I 
> > > extract just the text from it?
> >
> > You can use function `substring-no-properties' to give you 
> > a plain string that has no face or other properties.
> >
> > But you might not need to. What do you want to do with the 
> ? resulting text (string)?
>  
> I compare its contents to some text strings using string= or insert
> them into a buffer.  I am converting a freemind mindmap to a latex
> (beamer) file.

AFAIK, string= ignores text properties and should do what you want.

Re: elispQ: How can I extract text from #("text" ... )

[Mirko]

On Apr 4, 10:11 am, "Drew Adams" <drew.ad...@oracle.com> wrote:
> > > > values such as:
> > > >  #("Typically only electric field is assigned" 0 41 (face
> > > >  font-lock-string-face fontified t)))
>
> > > > Now, these are variables of type string. How can I
> > > > extract just the text from it?
>
> > > You can use function `substring-no-properties' to give you
> > > a plain string that has no face or other properties.
>
> > > But you might not need to. What do you want to do with the
> > ? resulting text (string)?
>
> > I compare its contents to some text strings using string= or insert
> > them into a buffer.  I am converting a freemind mindmap to a latex
> > (beamer) file.
>
> AFAIK, string= ignores text properties and should do what you want.

It does work, you are right.  It is that all the extra stuff is really
not necessary in my application.  And it obscures debugging.

Thanks

RE: elispQ: How can I extract text from #("text" ... )

[Drew Adams]

> > AFAIK, string= ignores text properties and should do what
> > you want.
> 
> It does work, you are right.  It is that all the extra stuff is really
> not necessary in my application.  And it obscures debugging.

Then I guess your options are to either (1) prevent the string from having a
text property to begin with or (2) remove the text property.

For #1, you need to find where that happens. #2 is straightforward:

 (substring-no-properties string-w-text-props)

Depending on what you are doing, you might alternatively use a print function to
insert text (without faces) in a buffer.:

 (with-output-to-temp-buffer "foo" (princ some-text))

And if you are getting the text from a buffer in the first place, you can use
`buffer-substring-no-properties' instead of `buffer-substring'. See also
`insert-buffer-substring-no-properties'.

HTH

Re: elispQ: How can I extract text from #("text" ... )

[Mirko]

On Apr 4, 11:57 am, "Drew Adams" <drew.ad...@oracle.com> wrote:
> > > AFAIK, string= ignores text properties and should do what
> > > you want.
>
> > It does work, you are right.  It is that all the extra stuff is really
> > not necessary in my application.  And it obscures debugging.
>
> Then I guess your options are to either (1) prevent the string from having a
> text property to begin with or (2) remove the text property.
>
> For #1, you need to find where that happens. #2 is straightforward:
>
>  (substring-no-properties string-w-text-props)
>
> Depending on what you are doing, you might alternatively use a print function to
> insert text (without faces) in a buffer.:
>
>  (with-output-to-temp-buffer "foo" (princ some-text))
>
> And if you are getting the text from a buffer in the first place, you can use
> `buffer-substring-no-properties' instead of `buffer-substring'. See also
> `insert-buffer-substring-no-properties'.
>
> HTH

Thanks for the pointers to those functions.  I will communicate with
the xml.el maintainer to see if he sees anything problem in
implementing them.  But I can always fall back to the (substring-no-
properties).

Out of curiosity, do you know where is the #( syntax described?  I
could not find it in the manual.

Thanks again,

Mirko

RE: elispQ: How can I extract text from #("text" ... )

[Drew Adams]

> Out of curiosity, do you know where is the #( syntax described?  I
> could not find it in the manual.

Elisp manual, node Text Props and Strings.

BTW, how did you look for it? `C-s #' finds it pretty quickly.

Perhaps Eli will add an index entry to the manual for this (there are other
entries for #, but not this one).

Re: elispQ: How can I extract text from #("text" ... )

[Eli Zaretskii]

> From: "Drew Adams" <drew.adams@oracle.com>
> Cc: "'Eli Zaretskii'" <eliz@gnu.org>
> Date: Fri, 4 Apr 2008 11:28:44 -0700
> 
> Perhaps Eli will add an index entry to the manual for this (there are other
> entries for #, but not this one).

Done.

Re: elispQ: How can I extract text from #("text" ... )

[David Combs]

In article <mailman.10042.1207410333.18990.help-gnu-emacs@gnu.org>,
Eli Zaretskii  <eliz@gnu.org> wrote:
>> From: "Drew Adams" <drew.adams@oracle.com>
>> Cc: "'Eli Zaretskii'" <eliz@gnu.org>
>> Date: Fri, 4 Apr 2008 11:28:44 -0700
>> 
>> Perhaps Eli will add an index entry to the manual for this (there are other
>> entries for #, but not this one).
>
>Done.
>
>

Where is this most-most-most-recent copy of the elisp man?

Thanks!

David

Re: elispQ: How can I extract text from #("text" ... )

[Eli Zaretskii]

> From: dkcombs@panix.com (David Combs)
> Date: Sun, 4 May 2008 01:28:21 +0000 (UTC)
> 
> In article <mailman.10042.1207410333.18990.help-gnu-emacs@gnu.org>,
> Eli Zaretskii  <eliz@gnu.org> wrote:
> >> From: "Drew Adams" <drew.adams@oracle.com>
> >> Cc: "'Eli Zaretskii'" <eliz@gnu.org>
> >> Date: Fri, 4 Apr 2008 11:28:44 -0700
> >> 
> >> Perhaps Eli will add an index entry to the manual for this (there are other
> >> entries for #, but not this one).
> >
> >Done.
> >
> >
> 
> Where is this most-most-most-recent copy of the elisp man?

In the Emacs CVS.

Re: elispQ: How can I extract text from #("text" ... )

[Joel J. Adamson]

dkcombs@panix.com (David Combs) writes:

> In article <mailman.10042.1207410333.18990.help-gnu-emacs@gnu.org>,
> Eli Zaretskii  <eliz@gnu.org> wrote:
>>> From: "Drew Adams" <drew.adams@oracle.com>
>>> Cc: "'Eli Zaretskii'" <eliz@gnu.org>
>>> Date: Fri, 4 Apr 2008 11:28:44 -0700
>>> 
>>> Perhaps Eli will add an index entry to the manual for this (there are other
>>> entries for #, but not this one).
>>
>>Done.
>>
>>
>
> Where is this most-most-most-recent copy of the elisp man?

Did you mean to type a comma?

,----
| Where is this most-most-most-recent copy of the elisp, man?
`----

The manual is in info format; it comes with the most recent versions of
Emacs (in CVS) and you should be able to read it with "\C-h mElisp".

,----
| # man elisp
`----

should get you

,----
| No manual entry for elisp
`----

Joel
-- 
Joel J. Adamson
Biostatistician
Pediatric Psychopharmacology Research Unit
Massachusetts General Hospital
Boston, MA  02114
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Re: elispQ: How can I extract text from #("text" ... )

[Mirko]

On Apr 4, 2:28 pm, "Drew Adams" <drew.ad...@oracle.com> wrote:
> > Out of curiosity, do you know where is the #( syntax described?  I
> > could not find it in the manual.
>
> Elisp manual, node Text Props and Strings.
>
> BTW, how did you look for it? `C-s #' finds it pretty quickly.
>
> Perhaps Eli will add an index entry to the manual for this (there are other
> entries for #, but not this one).

I was looking for #(  in the index.  I also browsed through several
sections including the onw for substring-no-properties, but did not
see the #( mentioned -- might have overlooked it.

Re: elispQ: How can I extract text from #("text" ... )

[Tim X]

Mirko <mvukovic@nycap.rr.com> writes:

> Hi,
>
> I am parsing an xml file using xml.el, and I am getting for attributes
> values such as:
>  #("Typically only electric field is assigned" 0 41 (face font-lock-
> string-face fontified t)))
>
> Now, these are variables of type string. How can I extract just the
> text from it?
>

I'm not sure I understand what your trying to do. The result you are
getting looks like an elisp list structure to me. You should be able to
extract what you want using car, cdr and friends. 

e.g 

(setq my-var ("Typically only electric field is assigned" 0 41 (face font-lock-
string-face fontified t)))

(car my-var)
 => "Typically only electric field is assigned"

(cdr my-var)
  => (0 41 (face font-lock-string-face fontified t))

etc

Tim

-- 
tcross (at) rapttech dot com dot au