For some reason, this is only happening within footnotes. Within the footnote, even changing the catcodes inside a group is not working.

Khaled Hosny wrote:
On Fri, May 14, 2010 at 02:19:13PM +0900, Nathan Camillo Sidoli wrote:
OK, but is there a solution for people who are using a fair bit of
math and imputing Arabic with ASCI input?

Change the catcodes inside a group:

$a^2_3$
\bgroup
\catcode`_=11
\catcode`^=11
a^2_3
\egroup
$a^2_3$

Don't textarab environment already do this?


Philiрp Rеichmuth wrote:
Am Wed, 12 May 2010 06:46:36 +0200 schrieb Tilman Hannemann:
I have encountered a similar problem before. It should be solved
by  putting

\catcode`_=11
\catcode`^=11 %etc.

in your preamble to turn the math characters into inactive letters.
This works only if you don't have math in your file.

I prefer to enter Arabic in UTF-8 directly.

Philipp



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