In the usage guidelines the optional boolean "minify" parameter is not explained and there are no examples of its usage.

When we combine two javascript files that do not end with a semi-colon, a javascript error is raised.
It can happen when libraries like jQuery are used.
Here is a sample.
$(function(){ /// My code})
When using that statement in a single file no error is raised, because the semi-colon (;) is not required, it's only strongly advised.
If we combine another file to this sample an error can be raised.
The fix is easy :
in libraries/carabiner.php at the line 964 and 970, replace
$file_data .= $this->_minify( $flag, $file['dev'] ) . "\n";
and
$file_data .= $this->_get_contents( $r ) ."\n";
by
$file_data .= $this->_minify( $flag, $file['dev'] ) . ";\n";
and
$file_data .= $this->_get_contents( $r ) .";\n";

Hi,
There is an option for load assets from module? for example:
the css path is APPPATH.'modules' and we can add modules asset path next like test_module/assets/css/test.css

I believe a check should be added to prevent generating HTML references for empty paths, for example:

$css = array('');
$this->carabiner->css($css);
$this->carabiner->display('css');

will output a <link> to the base CSS directory

right now in carabiner we can define just one directory for js and css assets, can we define multiple directories for the assets like 2 directories has different scripts

public
js - css

private or module specific
js - css

According to the documentation the following format should work:

$this->carabiner->css('home.css', 'screen', 'home.css', FALSE );

I've also tried:

$this->carabiner->css('home.css', 'screen', '', FALSE );

The other files added, which are combined, work and output properly. This particular file is linked as being in the /cache/ directory but no such file exists.