Bash completion working properly with colons in tasks names.

[fiedor]

For gh-14

using helpers added in http://anonscm.debian.org/cgit/bash-completion/bash-completion.git/commit/?id=42302658705e3545471f2f4e53c2f758355a2bcc

[tkellen]

Thanks for the PR fiedor! I'm reviewing this now.

[tkellen]

There need to be some checks to ensure that these don't blow up on older versions of bash.

[tkellen]

bash that ships with osx 10.9.4

GNU bash, version 3.2.51(1)-release (x86_64-apple-darwin13)
Copyright (C) 2007 Free Software Foundation, Inc.

running grunt and hitting tab:

grunt -sh: _get_comp_words_by_ref: command not found
-sh: __ltrim_colon_completions: command not found

[mikemonteith]

__ltrim_colon_completions can be defined like this

https://github.com/GArik/bash-completion/blob/master/test/lib/library.exp

__ltrim_colon_completions()
{
    if [[ "$1" == *:* && "$COMP_WORDBREAKS" == *:* ]]; then
        # Remove colon-word prefix from COMPREPLY items
        local colon_word=${1%"${1##*:}"}
        local i=${#COMPREPLY[*]}
        while [[ $((--i)) -ge 0 ]]; do
            COMPREPLY[$i]=${COMPREPLY[$i]#"$colon_word"}
        done
    fi
}

[sindresorhus]

ping