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#-*- mode: shell-script;-*-
# darcs command line completion.
# Copyright 2002 "David Roundy" <droundy@abridgegame.org>
# This archive should be copied in the directory /etc/bash_completion.d/
_darcs()
{
local cur
cur=${COMP_WORDS[COMP_CWORD]}
COMPREPLY=()
if (($COMP_CWORD == 1)); then
COMPREPLY=( $( darcs --commands | command grep "^$cur" ) )
return 0
fi
# Top-level options do not accept any further options
case "${COMP_WORDS[1]}" in
(-*) COMPREPLY=''; return 0;;
esac
# Build a new command line copying all the tokens and inserting
# '--list-options' before the first option (a token starting with '-').
local -a cmdline
local i=0
local m=$(( ${#COMP_WORDS[@]} - 1 ))
for token in "${COMP_WORDS[@]:0:${m}}"
do
case "$token" in
(-*) cmdline+=("--list-options" "${COMP_WORDS[@]:${i}}");
break;;
(*) cmdline+=("$token");
i=$(( $i + 1 ));;
esac
done
test $i -eq $m && cmdline+=("--list-options")
# So that the following "command-output to array" operation splits only at
# newlines, not at each space, tab or newline.
local IFS=$'\n'
COMPREPLY=( $( "${cmdline[@]}" 2>/dev/null |\
command grep "^${cur//./\\.}" | cut -d ';' -f 1) )
# Then, we adapt the resulting strings to be reusable by bash. If we don't
# do this, in the case where we have two repositories named
# ~/space in there-0.1 and ~/space in there-0.2, the first completion will
# give us:
# bash> darcs push ~/space in there-0.
# ~/space in there-0.1 ~/space in there-0.2
# and we have introduced two spaces in the command line (if we try to
# recomplete that, it won't find anything, as it doesn't know anything
# starting with "there-0.").
# printf %q will gracefully add the necessary backslashes.
#
# Bash also interprets colon as a separator. If we didn't handle it
# specially, completing http://example.org/repo from http://e would
# give us:
# bash> darcs pull http:http://example.org/repo
# An option would be to require the user to escape : as \: and we
# would do the same here. Instead, we return only the part after
# the last colon that is already there, and thus fool bash. The
# downside is that bash only shows this part to the user.
local i=${#COMPREPLY[*]}
local colonprefixes=${cur%"${cur##*:}"}
while [ $((--i)) -ge 0 ]; do
COMPREPLY[$i]=`printf %q "${COMPREPLY[$i]}"`
COMPREPLY[$i]=${COMPREPLY[$i]#"$colonprefixes"}
done
return 0
}
complete -F _darcs -o default darcs
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