Logical not in org-entities.el

Logical not in org-entities.el

[Florian Beck]

Hi!

org-entities contains the line:

("not" "\\textlnot{}" nil "¬" "[angled dash]" "¬" "¬")

This should be

("neg" "\\neg" t "¬" "[angled dash]" "¬" "¬")

The first line fails in math mode (i.e. "\not" is not replaced at all 
and negates/slashes the next symbol); the second works in either case.

Re: Logical not in org-entities.el

[Florian Beck]

> org-entities contains the line:
>
> ("not" "\\textlnot{}" nil "¬" "[angled dash]" "¬" "¬")
>
> This should be
>
> ("neg" "\\neg" t "¬" "[angled dash]" "¬" "¬")
>
> The first line fails in math mode (i.e. "\not" is not replaced at all
> and negates/slashes the next symbol); the second works in either case.

OK, so org doesn't touch anything inside a math environment at all. 
Which makes sense in a way. The confusion arises with 
org-pretty-entities because what you see is definitely not what you get.

Re: Logical not in org-entities.el

[Bastien]

Hi Florian,

Florian Beck <fb@miszellen.de> writes:

> The confusion arises with org-pretty-entities because
> what you see is definitely not what you get.

Mhh... not sure what you mean: what do you see that you don't get?

Thanks,

-- 
 Bastien

Re: Logical not in org-entities.el

[Florian Beck]

On 01/06/2013 07:14 AM, Bastien wrote:
> Hi Florian,
>
> Florian Beck <fb@miszellen.de> writes:
>
>> The confusion arises with org-pretty-entities because
>> what you see is definitely not what you get.
>
> Mhh... not sure what you mean: what do you see that you don't get?

With org-pretty-entities:
On display, org-entities handles all entities and displays them as 
unicode characters, even inside math blocks.
On export, org-entities only handles entities outside math. Most of the 
time it doesn't matter because the entity name is the same as the latex 
command. But in case of "$\not a$" latex export and fontification 
differ: the fontified buffer shows the angled dash (¬), the exported 
document shows a slash through the next charaxter.

Re: Logical not in org-entities.el

[Bastien]

Hi Florian,

Florian Beck <fb@miszellen.de> writes:

> With org-pretty-entities:
> On display, org-entities handles all entities and displays them as unicode
> characters, even inside math blocks.
> On export, org-entities only handles entities outside math. Most of the
> time it doesn't matter because the entity name is the same as the latex
> command. But in case of "$\not a$" latex export and fontification differ:
> the fontified buffer shows the angled dash (¬), the exported document shows
> a slash through the next charaxter.

In master, I added

  ("neg" "\\neg{}" nil "&not;" "[angled dash]" "¬" "¬")

in (defconst org-entities ...)

so that you can now use it to produce \\neg{} where relevant.

Thanks,

-- 
 Bastien

Re: Logical not in org-entities.el

[Florian Beck]

On 01/06/2013 12:39 PM, Bastien wrote:

> In master, I added
>
>    ("neg" "\\neg{}" nil "¬" "[angled dash]" "¬" "¬")
>
> in (defconst org-entities ...)
>
> so that you can now use it to produce \\neg{} where relevant.

Thanks, but: \neg has to be put in math mode.

Re: Logical not in org-entities.el

[Bastien]

Hi Florian,

Florian Beck <fb@miszellen.de> writes:

> Thanks, but: \neg has to be put in math mode.

Isn't it the case for other entities as well?

-- 
 Bastien