Hi Nikita,

On 02/07/2019 15:07, Nikita Popov wrote:
> Friendly reminder that this RFC needs to go into voting until Monday
> (preferably earlier) to make it into 7.4.

Thanks! Without the reminder, I would probably have missed it.

> Here's my feedback:
> 
>  * I would prefer to make escaping not driver-sensitive, as the current
> implementation is. Whether ?? is interpreted as a single ? or ?? should not
> depend on the driver.

Most of the feedback I had was quite the opposite (fear of desruption in
the other drivers). In fact in the latest iteration, I went for PDO API
setting, that lets the driver decide whether or not to enable the
feature, which means only pdo_pgsql would be affected:

https://github.com/mbeccati/php-src/commit/b8a9703b805e0dffd618823656c8610777efdc3e

>  * I would prefer to use \? instead of ?? for escaping. The former is much
> more easily understood by a PHP developer and has less chance of clashing
> with operators (PHP itself has a ?? operator, it's not so absurd to think
> that it also exists elsewhere). The RFC argues against this because it
> makes writing a literal \? harder (which would be \\\\?), but I think that
> a) the need for a literal \? seems rather rare and b) double-escaping is
> already a well-understood problem for anyone who ever used regular
> expressions.

Fair enough. Tbh, I have no strong preference... Would "\?" require also
implementing escape of the escape? Would that require some re2c magic?


Cheers
-- 
Matteo Beccati

Development & Consulting - http://www.beccati.com/

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