How to insert apostrophe (') into code and verbatim text?

How to insert apostrophe (') into code and verbatim text?

[Uriel Avalos]

Here's an easy one for the guru's, why does an apostrophe at the beginning of a =code= not work? When I export the following text to HTML, the "'life" variable isn't set as code (and the = symbols show up):

	Select ='life= for the x variable.

If I escape the apostrophe, I course get back the escape character in the HTML:

    	Select =\'life= for the x variable.

-- 
--Thanks!
Uriel

Re: How to insert apostrophe (') into code and verbatim text?

[Nick Dokos]

Uriel Avalos <amscopub-mail@yahoo.com> wrote:

> Here's an easy one for the guru's, why does an apostrophe at the beginning of a =code= not work? When I export the following text to HTML, the "'life" variable isn't set as code (and the = symbols show up):
> 
> 	Select ='life= for the x variable.
> 
> If I escape the apostrophe, I course get back the escape character in the HTML:
> 
>     	Select =\'life= for the x variable.
> 

Emphasis is applied by matching against a regular expression stored in the variable
org-emph-re. I get

,----
| org-emph-re is a variable defined in `org.el'.
| Its value is 
| "\\([ 	('\"{]\\|^\\)\\(\\([*/_=~+]\\)\\([^ 	
\n,\"']\\|[^ 	
\n,\"'].*?\\(?:\n.*?\\)\\{0,1\\}[^ 	
\n,\"']\\)\\3\\)\\([- 	.,:!?;'\")}\\]\\|$\\)"
| 
| Documentation:
| Regular expression for matching emphasis.
`----

which is way too complicated for my simple mind to wrap around without
some guidance. But the doc for org-export-with-emphasize says:

,----
| org-export-with-emphasize is a variable defined in `org-exp.el'.
| Its value is t
| 
| Documentation:
| Non-nil means, interpret *word*, /word/, and _word_ as emphasized text.
| If the export target supports emphasizing text, the word will be
| typeset in bold, italic, or underlined, respectively.  Works only for
| single words, but you can say: I *really* *mean* *this*.
| Not all export backends support this.
| 
| This option can also be set with the +OPTIONS line, e.g. "*:nil".
`----

so *words* are emphasized[1].

Can you write

 	Select '=life= for the x variable.

instead? The quote is not part of the <code> block, but does that
make much difference? And if it does, a little postprocessing on the
HTML might be all that is needed[2].

HTH,
Nick

[1] although after staring at it for a while and with the hindsight
provided by the org-export-with-emphasize doc, the part that goes [^ 	^M\n,\"']
specifically excludes spaces, tabs, carriage returns, newlines,
commas, double quotes and single quotes as components of words.

[2] You might try changing the RE (it is constructed in
org.el:org-set-emph-re()) - but regular expressions are very unforgiving
beasts: you forget one character or add one too many and the whole thing
goes to hell in a handbasket, faster than a bat out of hell - choose
your own cliche' :-)

Re: How to insert apostrophe (') into code and verbatim text?

[Uriel Avalos]

So I guess it's too complicated for the gurus. :-)

I'm already doing '=life= but I thought perhaps there was a quick hack to get ='life= to work. Oh well, not a biggie, life moves on...

On Thu, 04 Feb 2010 11:53:30 -0500
Nick Dokos <nicholas.dokos@hp.com> wrote:

> Uriel Avalos <amscopub-mail@yahoo.com> wrote:
> 
> > Here's an easy one for the guru's, why does an apostrophe at the beginning of a =code= not work? When I export the following text to HTML, the "'life" variable isn't set as code (and the = symbols show up):
> > 
> > 	Select ='life= for the x variable.
> > 
> > If I escape the apostrophe, I course get back the escape character in the HTML:
> > 
> >     	Select =\'life= for the x variable.
> > 
> 
> Emphasis is applied by matching against a regular expression stored in the variable
> org-emph-re. I get
> 
> ,----
> | org-emph-re is a variable defined in `org.el'.
> | Its value is 
> | "\\([ 	('\"{]\\|^\\)\\(\\([*/_=~+]\\)\\([^ 	
> \n,\"']\\|[^ 	
> \n,\"'].*?\\(?:\n.*?\\)\\{0,1\\}[^ 	
> \n,\"']\\)\\3\\)\\([- 	.,:!?;'\")}\\]\\|$\\)"
> | 
> | Documentation:
> | Regular expression for matching emphasis.
> `----
> 
> which is way too complicated for my simple mind to wrap around without
> some guidance. But the doc for org-export-with-emphasize says:
> 
> ,----
> | org-export-with-emphasize is a variable defined in `org-exp.el'.
> | Its value is t
> | 
> | Documentation:
> | Non-nil means, interpret *word*, /word/, and _word_ as emphasized text.
> | If the export target supports emphasizing text, the word will be
> | typeset in bold, italic, or underlined, respectively.  Works only for
> | single words, but you can say: I *really* *mean* *this*.
> | Not all export backends support this.
> | 
> | This option can also be set with the +OPTIONS line, e.g. "*:nil".
> `----
> 
> so *words* are emphasized[1].
> 
> Can you write
> 
>  	Select '=life= for the x variable.
> 
> instead? The quote is not part of the <code> block, but does that
> make much difference? And if it does, a little postprocessing on the
> HTML might be all that is needed[2].
> 
> HTH,
> Nick
> 
> [1] although after staring at it for a while and with the hindsight
> provided by the org-export-with-emphasize doc, the part that goes [^ 	^M\n,\"']
> specifically excludes spaces, tabs, carriage returns, newlines,
> commas, double quotes and single quotes as components of words.
> 
> [2] You might try changing the RE (it is constructed in
> org.el:org-set-emph-re()) - but regular expressions are very unforgiving
> beasts: you forget one character or add one too many and the whole thing
> goes to hell in a handbasket, faster than a bat out of hell - choose
> your own cliche' :-)


-- 
--Thanks!
Uriel

Re: How to insert apostrophe (') into code and verbatim text?

[Nick Dokos]

Uriel Avalos <amscopub-mail@yahoo.com> wrote:

> So I guess it's too complicated for the gurus. :-)
> 
> I'm already doing '=life= but I thought perhaps there was a quick hack
> to get ='life= to work. Oh well, not a biggie, life moves on...
> 

Too complicated for me, perhaps: I'm no guru :-)

Carsten had a suggestion of playing around with the various components
of the RE (see the variable org-emphasis-regexp-components) - did you
see that? But you will have to experiment and set them for *your*
purposes.

Cheers,
Nick

Re: How to insert apostrophe (') into code and verbatim text?

[Carsten Dominik]

On Feb 4, 2010, at 5:48 PM, Uriel Avalos wrote:

> Here's an easy one for the guru's, why does an apostrophe at the  
> beginning of a =code= not work? When I export the following text to  
> HTML, the "'life" variable isn't set as code (and the = symbols show  
> up):
>
> 	Select ='life= for the x variable.
>
> If I escape the apostrophe, I course get back the escape character  
> in the HTML:
>
>    	Select =\'life= for the x variable.

That is because '=life=' was considered more likely than what you are  
using.
Org-mode is using a heuristic method to figure out what is a normal  
equal sign, and what introduces code.  Feel free to play with the  
variable `org-emphasis-regexp-components' and see if you can come up  
with something that works for you.

- Carsten