Wikipedia OpenSearch and semantic bash completion

I wrote a tool that use the opensearch API for mediawiki to display the results of a query in wikipedia:

$ opensearch Charles Darw
Charles_Darwin   Charles Robert Darwin FRS (12 February 1809 – 19 April 1882) was an English...
Charles_Darwin_University   Charles Darwin University (CDU) is an Australian public university wi...
Charles_Darwin%27s_health   For much of his adult life, Charles Darwin's health was repeatedly co...
Charles_Darwin_Foundation   The Charles Darwin Foundation was founded in 1959, under the auspices...
Charles_Darwin_National_Park   Charles Darwin National Park is in the Northern Territory of Austr...
Charles_Darwin_Research_Station   The Charles Darwin Research Station (CDRS) is a biological rese...
Charles_Darwin%27s_education   Charles Darwin's education gave him a foundation in the doctrine o...
Charles_Darwin_%281758%E2%80%931778%29   Charles Darwin (3 September 1758–15 May 1778) was the ...
Charles_Darwin%27s_religious_views   Charles Darwin's views on religion have been the subject of ...
Charles_Darwin_and_the_Tree_of_Life   Charles Darwin and the Tree of Life is a 2009 television do...
Charles_Darwin_School   Charles Darwin School is the only secondary school in the Biggin Hill area. 
Charles_Darwin_%28aviator%29   Major Charles John Wharton Darwin was a First World War flying ace...
Charles_Darwin_Reserve   Charles Darwin Reserve is a 686 km2 nature reserve in Western Australia.
Charles_Darwin_bibliography   This is a partial list of the writings of Charles Darwin, including...
Darwin   Darwin may refer to:

This tool is available on github at:

https://github.com/lindenb/ccsandbox/blob/master/src/opensearch.cpp

Bash completion

Now I want to use this tool for bash completion. Say, I wrote a tool named 'foo' that expects the title of a wikipedia article as an argument. In ~/.bash_completion.d/, I wrote a file named opensearch:

_opensearch()

    	{

        local cur choice reply

        COMPREPLY=()

        cur="${COMP_WORDS[COMP_CWORD]}"

        choice=$(opensearch -d -c ${cur})

        reply=$(compgen -W "${choice}" -- ${cur})

        COMPREPLY=( $reply )

        return 0

    	} &&



complete -F _opensearch foo

This script is activated when a new terminal is loaded in ${HOME}/.bashrc:

(...)
if [ -f ${HOME}/.bash_completion.d/opensearch ]; then
    . ${HOME}/.bash_completion.d/opensearch
fi

Now, typing 'foo', a keyword and <TAB> activates this new completion:

$ foo Charles_D <TAB> <TAB>

Charles_Dance              Charles_Darwin_University  Charles_Doolittle_Walcott  Charles_Dutoit
Charles_Darwin             Charles_Dickens            Charles_Durning
$ foo Charles_D

That's it,

Pierre