"too many shorthand attributes" error

[TomPavelec]

Current state

Good examples

When custom template function is called with named argument:

    {funcName arg=argumentValue}

in function body arg can be accessed:

    $arg = $params['arg'];

---

When more named arguments are passed:

 {funcName arg=argumentValue arg2=argumentValue2}

in function body args can be accessed:

    $arg1 = $params['arg'];
    $arg2 = $params['arg2'];

---

When more shorthand args are passed:

    {funcName argumentValue argumentValue2}

in function body args can be accessed:

    $arg1 = $params[0];
    $arg2 = $params[1];

Unexpected behavior (BUG)

But when one shorthand arg is passed:

    {funcName argumentValue}

The "too many shorthand attributes" error is triggerd.

Expected behavior

When one shorthand arg is passed (it should be the same as when more shorthand args are passed):

    {funcName argumentValue}

in function body arg can be accessed:

    $arg = $params[0];

[wisskid]

did you use some for of custom compile stap to define shorttag attributes? The example you give creates an error for any number of shorthand attributes:

<?php
require_once './vendor/autoload.php';
$smarty = new Smarty();
$smarty->registerPlugin("function","funcName", function ($params, $smarty) { return ''; });
$smarty->display('string:{funcName argumentValue argumentValue2}');

returns

PHP Fatal error:  Uncaught  --> Smarty Compiler: Syntax error in template "string:{funcName argumentValue argumentValue2}"  on line 1 "{funcName argumentValue argumentValue2}" too many shorthand attributes <-- 
  thrown in /home/workspace/smarty/smarty/libs/sysplugins/smarty_internal_templatecompilerbase.php on line 1

[TomPavelec]

Im sorry, it was caused by cached result (for case "When more shorthand args are passed").

But after this patch #569 is possible to use one/more shorthands in custom func call and then they are accessible by $params[0] in func body.

So its not a BUG, but i will appriciate that shorter func calls.

{func arg arg2 arg3}
instead of:
{func arg1=arg arg2=arg2 arg3=arg3}

[wisskid]

Alright, i've renamed your PR to indicate this is not a bug but an enhancement, and referenced it in #165 where @cdp1337 suggested the same change. I'll close this issue now.