Per my understanding, the left prefix match means the name "starts with" given prefix, while the right prefix match means the name "ends with" given prefix.

$sht(a=>aac) = 1;

$sht(a=>abc) = 1;

$sht(a=>acc) = 1;

$sht(a=>adc) = 1;

...

// both will produce same output

xlog("$shtcn(a=>a.*)");

xlog("$shtcn(a=>%~a)");

// both will produce same output

xlog("$shtcn(a=>.*c)");

xlog("$shtcn(a=>~%c)");

I usually use regex whenever possible and avoid these fancy derivatives to keep things simple and easy to understand in kamailio config.

Hope this helps.

Muhammad Shahzad Shafi

Tel: +49 176 99 83 10 85

Sent from my Huawei P40 5G phone

-------- Original message --------
From: Brooks Bridges <bbridges@call48.com>
Date: Thu, 28 Oct 2021, 23:26
To: "Kamailio (SER) - Users Mailing List" <sr-users@lists.kamailio.org>
Subject: [SR-Users] htable shtcn expressions

Referring to the expressions outlined at http://www.kamailio.org/wiki/cookbooks/5.4.x/pseudovariables#shtcn_htable_exp , is there any additional documentation or examples floating around that further explains how the right and left prefix matching works? The rest of them are pretty clear, but I'm having troubles with these and can't get them working like I would expect them to work.
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