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# Please add "source /path/to/bash-autocomplete.sh" to your .bashrc to use this.
_clang_filedir()
{
# _filedir function provided by recent versions of bash-completion package is
# better than "compgen -f" because the former honors spaces in pathnames while
# the latter doesn't. So we use compgen only when _filedir is not provided.
_filedir 2> /dev/null || COMPREPLY=( $( compgen -f ) )
}
_clang()
{
local cur prev words cword arg flags w1 w2
# If latest bash-completion is not supported just initialize COMPREPLY and
# initialize variables by setting manually.
_init_completion -n 2> /dev/null
if [[ "$?" != 0 ]]; then
COMPREPLY=()
cword=$COMP_CWORD
cur="${COMP_WORDS[$cword]}"
fi
w1="${COMP_WORDS[$cword - 1]}"
if [[ $cword > 1 ]]; then
w2="${COMP_WORDS[$cword - 2]}"
fi
# Pass all the current command-line flags to clang, so that clang can handle
# these internally.
# '=' is separated differently by bash, so we have to concat them without ','
for i in `seq 1 $cword`; do
if [[ $i == $cword || "${COMP_WORDS[$(($i+1))]}" == '=' ]]; then
arg="$arg${COMP_WORDS[$i]}"
else
arg="$arg${COMP_WORDS[$i]},"
fi
done
# expand ~ to $HOME
eval local path=${COMP_WORDS[0]}
# Use $'\t' so that bash expands the \t for older versions of sed.
flags=$( "$path" --autocomplete="$arg" 2>/dev/null | sed -e $'s/\t.*//' )
# If clang is old that it does not support --autocomplete,
# fall back to the filename completion.
if [[ "$?" != 0 ]]; then
_clang_filedir
return
fi
# When clang does not emit any possible autocompletion, or user pushed tab after " ",
# just autocomplete files.
if [[ "$flags" == "$(echo -e '\n')" ]]; then
# If -foo=<tab> and there was no possible values, autocomplete files.
[[ "$cur" == '=' || "$cur" == -*= ]] && cur=""
_clang_filedir
elif [[ "$cur" == '=' ]]; then
COMPREPLY=( $( compgen -W "$flags" -- "") )
else
# Bash automatically appends a space after '=' by default.
# Disable it so that it works nicely for options in the form of -foo=bar.
[[ "${flags: -1}" == '=' ]] && compopt -o nospace 2> /dev/null
COMPREPLY=( $( compgen -W "$flags" -- "$cur" ) )
fi
}
complete -F _clang clang