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path: root/bash/bashrc.d/completion.bash
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# Simple completions for Bash builtins and POSIX utilities; more specific or
# complex stuff goes in ~/.bash_completion.d, for possible dynamic loading

# If COMP_WORDBREAKS has a value, strip all colons from it; this allows
# completing filenames correctly, since a colon is not a shell metacharacter:
# <http://tiswww.case.edu/php/chet/bash/FAQ> (E13)
if [[ -n $COMP_WORDBREAKS ]] ; then
    COMP_WORDBREAKS=${COMP_WORDBREAKS//:}
fi

# If ~/.hosts exists, use that as the host completion file rather than
# /etc/hosts, so I can populate the list myself
if [[ -f $HOME/.hosts ]] ; then
    HOSTFILE=$HOME/.hosts
fi

# Aliases
complete -A alias \
    'unalias'

# Bash builtins
complete -A builtin \
    'builtin'
complete -A enabled \
    'disable'
complete -A disabled \
    'enable'

# Bash options
complete -A setopt \
    'set'

# Commands
complete -A command \
    'alias' \
    'command' \
    'complete' \
    'compopt' \
    'coproc' \
    'do' \
    'exec' \
    'if' \
    'hash' \
    'then' \
    'time' \
    'type' \
    'until' \
    'while'

# Directories
complete -A directory \
    'cd' \
    'pushd' \
    'mkdir' \
    'rmdir'

# Functions and variables
complete -A function \
    'function'
complete -A function -A variable \
    'declare' \
    'export' \
    'local' \
    'readonly' \
    'typeset' \
    'unset'
complete -A variable \
    'for' \
    'getopts' \
    'let' \
    'read' \
    'select'

# Help topics
complete -A helptopic \
    'help'

# Jobspecs
complete -P '%' -A job \
    'disown' \
    'fg' \
    'jobs'
complete -P '%' -A stopped \
    'bg'

# Readline bindings
complete -A binding \
    'bind'

# Shell options
complete -A shopt \
    'shopt'

# Signal names
complete -A signal \
    'trap'

# The `mapfile` builtin in Bash >= 4.0
if ((BASH_VERSINFO[0] >= 4)) ; then
    complete -A arrayvar \
        'mapfile' \
        'readarray'
fi

# If we have dynamic completion loading (Bash>=4.0), use it
if ((BASH_VERSINFO[0] >= 4)) ; then

    # Handler tries to load appropriate completion for commands
    _completion_loader() {
        [[ -n $1 ]] || return
        local compspec
        compspec=$HOME/.bash_completion.d/$1.bash
        [[ -f $compspec ]] || return
        source "$compspec" >/dev/null 2>&1 && return 124
    }
    complete -D -F _completion_loader -o bashdefault -o default

# If not, load all of the completions up now
else
    for sh in "$HOME"/.bash_completion.d/*.bash ; do
        [[ -e $sh ]] || continue
        source "$sh"
    done
    unset -v sh
fi