bug#42267: Fontification takes a long time when an equation contains a double prime

[PierGianLuca Porta Mana]

Hi Ikumi, thank you for taking care of this.

I wonder what other people's opinions would be about turning *off* raw-quotes 
highlighting by default (is it on by default?) – or maybe eliminating it 
altogether. There would be several reason for this:

– Quirks with apostrophes used in math mode, as the present bug showed; and also the 
complexity of distinguishing a genitive apostrophe ("the students' books") from 
a closing quote mark in a single-quote style, which often occurs in British writings for 
example.

– Quirks with multi-paragraph quotes, when one uses the quotation style that 
repeats the opening quotes (but not the closing quotes) at each paragraph.

– Syntactically it's best to introduce quotations with an appropriate macro, eg 
\enquote{} from the csquotes package, which also automatically takes care of 
quotation styles like the ones mentioned above.

Just some thoughts.
Cheers,
Luca



On 2020-07-11 07:55, Ikumi Keita wrote:
> > > > > > Ikumi Keita <ikumi@ikumi.que.jp> writes:
> > I think the behavior of the above item 1 is a bug. When f-l-e-r-b-q
> > cannot find a matching opening quote, it should just give up to extend
> > the region anymore.
>
> After reconsideration, I realized that such giving up is not appropriate
> when that unmatched close quote has, in front of it, other open-close
> quote pairs. Examples:
>        abc ``def ghi'' jkl $y''=x^{2}$
>        abc <<def ghi>> jkl $y''=x^{2}$
>
> So the correct way is to continue searching backwards another close
> quote, I think. The revised patch is attached. I'll install it soon.
>
> Regards,
> Ikumi Keita
>
>
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