1 files changed, 84 insertions, 0 deletions
diff --git a/shell/bash-completion b/shell/bash-completion
new file mode 100644
index 0000000..a0f07dc
--- /dev/null
+++ b/shell/bash-completion
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+_detect_kver() {
+    local kver_validator='^[[:digit:]]+(\.[[:digit:]]+)+'
+    offset=$(hexdump -s 526 -n 2 -e '"%0d"' "$1" 2>/dev/null) || return 1
+    read kver _ < \
+        <(dd if="$1" bs=1 count=127 skip=$(( offset + 0x200 )) 2>/dev/null)
+    [[ $kver =~ $kver_validator ]] && printf "$kver"
+}
+
+_lsinitcpio() {
+    local cur opts
+    opts=(-a --analyze -c --config -h --help -l --list
+          -n --nocolor -V --version -v --verbose -x --extract)
+
+    _get_comp_words_by_ref cur
+
+    case $cur in
+        -*)
+            COMPREPLY=($(compgen -W "${opts[*]}" -- "$cur")) ;;
+        *)
+            _filedir ;;
+    esac
+}
+
+_find_kernel_versions() {
+    local -a matches
+    local dir f kver
+
+    for f in /boot/*; do
+        # only match regular files which pass validation
+        if [[ ! -L $f && -f $f ]] && kver=$(_detect_kver "$f"); then
+            matches+=("$f" "$kver")
+        fi
+    done
+
+    COMPREPLY=($(compgen -W "${matches[*]}" -- $cur))
+}
+
+_files_from_dirs() {
+    local files stripsuf d f
+
+    if [[ $1 = -s ]]; then
+        stripsuf=$2
+        shift 2
+    fi
+
+    for d in "$@"; do
+        for f in "$d"/*; do
+            [[ -f $f ]] && files+=("${f##*/}")
+        done
+    done
+
+    printf '%s\n' "${files[@]%$stripsuf}"
+}
+
+_mkinitcpio() {
+    local action cur prev opts
+    opts=(-A --addhooks -c --config -g --generate -H --hookhelp -h --help -k --kernel
+          -L --listhooks -M --automods -n --nocolor -P --allpresets -p --preset -r --moduleroot
+          -S --skiphooks -s --save -t --builddir -V --version -v --verbose -z --compress)
+
+    _get_comp_words_by_ref cur prev
+
+    case $prev in
+        -[cg]|--config|--generate)
+            _filedir ;;
+        -r|--moduleroot|-t|--builddir)
+            _filedir -d ;;
+        -k|--kernel)
+            _find_kernel_versions ;;
+        -p|--preset)
+            COMPREPLY=($(compgen -W "$(_files_from_dirs -s .preset /etc/mkinitcpio.d)" -- "$cur")) ;;
+        -[AHS]|--add|--hookhelp|--skiphooks)
+            COMPREPLY=($(compgen -W "$(_files_from_dirs {/usr,}/lib/initcpio/install)" -- "$cur")) ;;
+        *)
+            COMPREPLY=($(compgen -W "${opts[*]}" -- "$cur")) ;;
+    esac
+}
+
+complete -F _mkinitcpio mkinitcpio
+complete -F _lsinitcpio lsinitcpio
+
+# vim: set et ts=4 sw=4 ft=sh: