<tool id="cat_multiple" name="Concatenate multiple datasets" version="0.2">
    <description>tail-to-head</description>
    <command><![CDATA[
        cat
        #for $file in $input
            "$file"
        #end for
        > "$out_file1"
        ]]>
    </command>
    <inputs>
        <param name="input" type="data" label="Concatenate Dataset" multiple="True"/>
    </inputs>
    <outputs>
        <data name="out_file1" format_source="input" metadata_source="input"/>
    </outputs>
    <tests>
        <test>
            <param name="input" value="1.bed,2.bed"/>
            <output name="out_file1" file="cat_wrapper_out1.bed"/>
        </test>
    </tests>
    <help>

.. class:: warningmark

**WARNING:** Be careful not to concatenate datasets of different kinds (e.g., sequences with intervals). This tool does not check if the datasets being concatenated are in the same format.

-----

**What it does**

Concatenates datasets

-----

**Example**

Concatenating Dataset::

    chrX  151087187  151087355  A  0  -
    chrX  151572400  151572481  B  0  +

with Dataset1::

    chr1  151242630  151242955  X  0  +
    chr1  151271715  151271999  Y  0  +
    chr1  151278832  151279227  Z  0  -

and with Dataset2::

    chr2  100000030  200000955  P  0  +
    chr2  100000015  200000999  Q  0  +

will result in the following::

    chrX  151087187  151087355  A  0  -
    chrX  151572400  151572481  B  0  +
    chr1  151242630  151242955  X  0  +
    chr1  151271715  151271999  Y  0  +
    chr1  151278832  151279227  Z  0  -
    chr2  100000030  200000955  P  0  +
    chr2  100000015  200000999  Q  0  +

-----

Adapted from galaxy's catWrapper.xml to allow multiple input files

    </help>
</tool>