completion/alias: rename

There is no reason for this to be in the `plugins` directory, it just needs to have a load priority sufficiently high that it runs after any aliases are defined.

plugins/available/alias-completion.plugin.bash

@@ -1,98 +0,0 @@
-# shellcheck shell=bash
-about-plugin 'Automatic completion of aliases'
-# Load after the other completions to understand what needs to be completed
-# BASH_IT_LOAD_PRIORITY: 800
-
-# References:
-# http://superuser.com/a/437508/119764
-# http://stackoverflow.com/a/1793178/1228454
-
-# Automatically add completion for all aliases to commands having completion functions
-function alias_completion() {
-	local namespace="alias_completion"
-	local tmp_file completion_loader alias_name line completions
-	local alias_arg_words new_completion compl_func compl_wrapper alias_defn
-
-	# create array of function completion triggers, keeping multi-word triggers together
-	IFS=$'\n' read -d '' -ra completions < <(complete -p)
-	((${#completions[@]} == 0)) && return 0
-
-	completions=("${completions[@]##complete -* * -}") # strip all but last option plus trigger(s)
-	completions=("${completions[@]#complete -}")       # strip anything missed
-	completions=("${completions[@]#? * }")             # strip last option and arg, leaving only trigger(s)
-
-	# create temporary file for wrapper functions and completions
-	tmp_file="$(mktemp -t "${namespace}-${RANDOM}XXXXXX")" || return 1
-
-	completion_loader="$(complete -p -D 2> /dev/null | sed -Ene 's/.* -F ([^ ]*).*/\1/p')"
-
-	# read in "<alias> '<aliased command>' '<command args>'" lines from defined aliases
-	# some aliases do have backslashes that needs to be interpreted
-	# shellcheck disable=SC2162
-	while read line; do
-		line="${line#alias }"
-		alias_name="${line%%=*}"
-		alias_defn="${line#*=}"                 # alias definition
-		alias_cmd="${alias_defn%%[[:space:]]*}" # first word of alias
-		alias_cmd="${alias_cmd:1}"              # lose opening quotation mark
-		alias_args="${alias_defn#*[[:space:]]}" # everything after first word
-		alias_args="${alias_args%\'}"           # lose ending quotation mark
-
-		# skip aliases to pipes, boolean control structures and other command lists
-		[[ "${alias_args}" =~ [\|\&\;\)\(\n] ]] && continue
-		# avoid expanding wildcards
-		read -a alias_arg_words <<< "$alias_args"
-
-		# skip alias if there is no completion function triggered by the aliased command
-		if ! _bash-it-array-contains-element "$alias_cmd" "${completions[@]}"; then
-			if [[ -n "$completion_loader" ]]; then
-				# force loading of completions for the aliased command
-				"${completion_loader:?}" "${alias_cmd}"
-				# 124 means completion loader was successful
-				[[ $? -eq 124 ]] || continue
-				completions+=("$alias_cmd")
-			else
-				continue
-			fi
-		fi
-		new_completion="$(complete -p "$alias_cmd" 2> /dev/null)"
-
-		# create a wrapper inserting the alias arguments if any
-		if [[ -n $alias_args ]]; then
-			compl_func="${new_completion/#* -F /}"
-			compl_func="${compl_func%% *}"
-			# avoid recursive call loops by ignoring our own functions
-			if [[ "${compl_func#_"$namespace"::}" == "$compl_func" ]]; then
-				compl_wrapper="_${namespace}::${alias_name}"
-				echo "function $compl_wrapper {
-                        local compl_word=\$2
-                        local prec_word=\$3
-                        # check if prec_word is the alias itself. if so, replace it
-                        # with the last word in the unaliased form, i.e.,
-                        # alias_cmd + ' ' + alias_args.
-                        if [[ \$COMP_LINE == \"\$prec_word \$compl_word\" ]]; then
-                            prec_word='$alias_cmd $alias_args'
-                            prec_word=\${prec_word#* }
-                        fi
-                        (( COMP_CWORD += ${#alias_arg_words[@]} ))
-                        COMP_WORDS=($alias_cmd $alias_args \${COMP_WORDS[@]:1})
-                        (( COMP_POINT -= \${#COMP_LINE} ))
-                        COMP_LINE=\${COMP_LINE/$alias_name/$alias_cmd $alias_args}
-                        (( COMP_POINT += \${#COMP_LINE} ))
-                        $compl_func \"$alias_cmd\" \"\$compl_word\" \"\$prec_word\"
-                    }" >> "$tmp_file"
-				new_completion="${new_completion/ -F $compl_func / -F $compl_wrapper }"
-			fi
-		fi
-
-		# replace completion trigger by alias
-		if [[ -n $new_completion ]]; then
-			new_completion="${new_completion% *} $alias_name"
-			echo "$new_completion" >> "$tmp_file"
-		fi
-	done < <(alias -p)
-	# shellcheck source=/dev/null
-	source "$tmp_file" && command rm -f "$tmp_file"
-}
-
-alias_completion