org-mode pretty entities has \perp but not \parallel

org-mode pretty entities has \perp but not \parallel

[Brady Trainor]

Hi, I expected \parallel to work after success with \perp. That is, I've executed in buffer M-x org-toggle-pretty-entities RET, and I expected to see \parallel as unicode ∥, since \perp is overlayed (correct term?) with ⟂. Though, the former is pretty hard to see, so maybe it was decided against.

I just tried exporting to HTML (and MathJax), and it looks like the LaTeX delimited symbols should be either $\parallel$ or $\|$. So simply writing $||$ in ones' notes would /not/ be the same.

,----
| Org-mode version 8.2.10
| (8.2.10-1-g8b63dc-elpa
| @ /home/iam/.emacs.d/elpa/org-20141027/)
`----

--
Brady

Re: org-mode pretty entities has \perp but not \parallel

[Rasmus]

Brady Trainor <algebrat@uw.edu> writes:

> Hi, I expected \parallel to work after success with \perp. That is,
> I've executed in buffer M-x org-toggle-pretty-entities RET, and I
> expected to see \parallel as unicode ∥, since \perp is overlayed
> (correct term?) with ⟂.

\parallel should be added IMO as it's supported by vanilla LaTeX.

Would you be interested in providing a patch?  You would have to add it
to org-entities.el, e.g. after the perp entity and then send the patch
to this list.

>  Though, the former is pretty hard to see, so maybe it was decided
> against.

Maybe you don't have a good font?  My Emacs picks it up from Biolinum.

—Rasmus

-- 
Sådan en god dansk lagereddike kan man slet ikke bruge mere

Re: org-mode pretty entities has \perp but not \parallel

[Brady Trainor]

Hello, 

Rasmus <rasmus@gmx.us> writes:

> Brady Trainor <algebrat@uw.edu> writes:
>
>> Hi, I expected \parallel to work after success with \perp. That is,
>> I've executed in buffer M-x org-toggle-pretty-entities RET, and I
>> expected to see \parallel as unicode ∥, since \perp is overlayed
>> (correct term?) with ⟂.
>
> \parallel should be added IMO as it's supported by vanilla LaTeX.
>
> Would you be interested in providing a patch?  You would have to add it
> to org-entities.el, e.g. after the perp entity and then send the patch
> to this list.

I will start on this. 

--
Brady

>
>>  Though, the former is pretty hard to see, so maybe it was decided
>> against.
>
> Maybe you don't have a good font?  My Emacs picks it up from Biolinum.
>
> —Rasmus

Re: org-mode pretty entities has \perp but not \parallel

[Brady Trainor]

Rasmus <rasmus@gmx.us> writes:

> Would you be interested in providing a patch?  You would have to add it
> to org-entities.el, e.g. after the perp entity and then send the patch
> to this list.
>

I think this works, I did try it, with M-x org-toggle-pretty-entities. (Re: 5th and 6th argument: Is "||" a good ASCII/Latin1 representation?) 

#+BEGIN_SRC emacs-lisp
("parallel" "\\parallel" t "&parallel;" "||" "||" "∥")
#+END_SRC

I also tried to add something like

#+BEGIN_SRC 
("|" "\\\|" t "&parallel;" "||" "||" "∥")
#+END_SRC

with "\\\|" or "\\|", but it wasn't working for me. I didn't see any non-alphabetical entities ("name") in the variable org-entities-user, so I was guessing it wouldn't work with a one-line edit. 

Is the patch okay? I simply used C-x s d (C-g C-x b *Diff* RET).

--
Brady

diff -c --label /home/iam/.emacs.d/elpa/org-20141027/org-entities.el --label \#\<buffer\ org-entities.el\> /home/iam/.emacs.d/elpa/org-20141027/org-entities.el /tmp/buffer-content-1773597i
*** /home/iam/.emacs.d/elpa/org-20141027/org-entities.el
--- #<buffer org-entities.el>
***************
*** 394,399 ****
--- 394,400 ----
      ("ang" "\\angle" t "&ang;" "[angle]" "[angle]" "∠")
      ("angle" "\\angle" t "&ang;" "[angle]" "[angle]" "∠")
      ("perp" "\\perp" t "&perp;" "[up tack]" "[up tack]" "⊥")
+     ("parallel" "\\parallel" t "&parallel;" "||" "||" "∥")
      ("sdot" "\\cdot" t "&sdot;" "[dot]" "[dot]" "⋅")
      ("cdot" "\\cdot" t "&sdot;" "[dot]" "[dot]" "⋅")
      ("lceil" "\\lceil" t "&lceil;" "[left ceiling]" "[left ceiling]" "⌈")

Diff finished.  Tue Nov 18 00:35:31 2014

Re: org-mode pretty entities has \perp but not \parallel

[Rasmus]

Brady Trainor <algebrat@uw.edu> writes:

> Rasmus <rasmus@gmx.us> writes:
>
>> Would you be interested in providing a patch?  You would have to add it
>> to org-entities.el, e.g. after the perp entity and then send the patch
>> to this list.
>>
>
> I think this works, I did try it, with M-x
> org-toggle-pretty-entities. (Re: 5th and 6th argument: Is "||" a good
> ASCII/Latin1 representation?)
>
> #+BEGIN_SRC emacs-lisp
> ("parallel" "\\parallel" t "&parallel;" "||" "||" "%")
> #+END_SRC

Except the ∥ that was somehow eaten in your snip (but OK below).

> I also tried to add something like
>
> #+BEGIN_SRC 
> ("|" "\\\|" t "&parallel;" "||" "||" "%")
> #+END_SRC
>
> with "\\\|" or "\\|", but it wasn't working for me. I didn't see any
> non-alphabetical entities ("name") in the variable org-entities-user,
> so I was guessing it wouldn't work with a one-line edit.

I think they are not the same.  I'd use $\|x\|_2$ for a norm, say.
Parallel is a relation: $a\parallel b$.

> Is the patch okay? I simply used C-x s d (C-g C-x b *Diff* RET).

If you want to go "all in", which is a lot of fun, you have to submit a
TINY PATCH:

     http://orgmode.org/worg/org-contribute.html

Otherwise, I'm happy to submit it for you (though I'm not sure if
something like this would go to maint or master...?)

—Rasmus

-- 
Need more coffee. . .

Re: org-mode pretty entities has \perp but not \parallel

[Brady Trainor]

Rasmus <rasmus@gmx.us> writes:

> Brady Trainor <algebrat@uw.edu> writes:
>
[ snip ]
>> #+BEGIN_SRC emacs-lisp
>> ("parallel" "\\parallel" t "&parallel;" "||" "||" "%")
>> #+END_SRC
>
> Except the ∥ that was somehow eaten in your snip (but OK below).

Hmm, not sure where that happened, I'll have to look out for that when I'm emailing unicode parallel lines again. :)

>
>> I also tried to add something like
>>
>> #+BEGIN_SRC 
>> ("|" "\\\|" t "&parallel;" "||" "||" "%")
>> #+END_SRC
>>
>> with "\\\|" or "\\|", but it wasn't working for me. I didn't see any
>> non-alphabetical entities ("name") in the variable org-entities-user,
>> so I was guessing it wouldn't work with a one-line edit.
>
> I think they are not the same.  I'd use $\|x\|_2$ for a norm, say.
> Parallel is a relation: $a\parallel b$.

Ah yes. Now this \| makes more sense. 

>
>> Is the patch okay? I simply used C-x s d (C-g C-x b *Diff* RET).
>
> If you want to go "all in", which is a lot of fun, you have to submit a
> TINY PATCH:
>
>      http://orgmode.org/worg/org-contribute.html
>
> Otherwise, I'm happy to submit it for you (though I'm not sure if
> something like this would go to maint or master...?)
>
> —Rasmus

Yes please do submit when you have the time, though I will try to get closer to being setup for this when I can. (E.g., I'm currently on Elpa Org-mode... and my commits are mostly linear for personal files.) 

Re: org-mode pretty entities has \perp but not \parallel

[Nicolas Goaziou]

Hello,

Rasmus <rasmus@gmx.us> writes:

> Otherwise, I'm happy to submit it for you (though I'm not sure if
> something like this would go to maint or master...?)

Master, please.


Regards,

-- 
Nicolas Goaziou

Re: org-mode pretty entities has \perp but not \parallel

[Rasmus]

Brady Trainor <algebrat@uw.edu> writes:

>> I think they are not the same.  I'd use $\|x\|_2$ for a norm, say.
>> Parallel is a relation: $a\parallel b$.
>
> Ah yes. Now this \| makes more sense. 

Great! 

>> If you want to go "all in", which is a lot of fun, you have to submit a
>> TINY PATCH:
>>
>>      http://orgmode.org/worg/org-contribute.html
>> 
> Yes please do submit when you have the time, though I will try to get
> closer to being setup for this when I can. (E.g., I'm currently on
> Elpa Org-mode... and my commits are mostly linear for personal files.)

Pushed.

My "work Org" (is /usr/share/emacs/site-lisp) is different from my
"develop Org" checkout (in ~/src/org-mode), though both are based on
master.

Feel free to come back and contribute some more later!

—Rasmus

-- 
Bang bang