Import bash-completion file from upstream project

Thanks to Igor Murzov <igor@gplsoft.org> for the initial
contribution of this file to the upstream bash-completion
project, and thanks to Ville Skyttä <ville.skytta@iki.fi>
and Koichi Murase <myoga.murase@gmail.com> for various
changes and fixes since then.

Co-authored-by: Igor Murzov <igor@gplsoft.org>
Co-authored-by: Ville Skyttä <ville.skytta@iki.fi>
Co-authored-by: Koichi Murase <myoga.murase@gmail.com>

files/shell-completion/slackpkg.bash

@@ -0,0 +1,113 @@
+# bash completion for slackpkg(8)                          -*- shell-script -*-
+# options list is based on `grep '\-.*\=.*)' /usr/sbin/slackpkg | cut -f1 -d\)`
+
+_slackpkg()
+{
+    local cur prev words cword
+    _init_completion -n = || return
+
+    local split=false
+    if [[ $cur == -?*=* ]]; then
+        prev="${cur%%?(\\)=*}"
+        cur="${cur#*=}"
+        split=true
+    fi
+
+    case "$prev" in
+        -delall | -checkmd5 | -checkgpg | -checksize | -postinst | -onoff | \
+            -download_all | -dialog | -batch | -only_new_dotnew | \
+            -use_includes | -spinning)
+            COMPREPLY=($(compgen -W 'on off' -- "$cur"))
+            return
+            ;;
+        -default_answer)
+            COMPREPLY=($(compgen -W 'yes no' -- "$cur"))
+            return
+            ;;
+        -dialog_maxargs | -mirror)
+            # argument required but no completions available
+            return
+            ;;
+    esac
+
+    $split && return
+
+    if [[ $cur == -* ]]; then
+        compopt -o nospace
+        COMPREPLY=($(compgen -W '-delall= -checkmd5= -checkgpg=
+            -checksize= -postinst= -onoff= -download_all= -dialog=
+            -dialog_maxargs= -batch= -only_new_dotnew= -use_includes=
+            -spinning= -default_answer= -mirror=' -- "$cur"))
+        return
+    fi
+
+    local confdir="/etc/slackpkg"
+    local config="$confdir/slackpkg.conf"
+
+    [[ -r $config ]] || return
+    . "$config"
+
+    local i action
+    for ((i = 1; i < ${#words[@]}; i++)); do
+        if [[ ${words[i]} != -* ]]; then
+            action="${words[i]}"
+            break
+        fi
+    done
+
+    case "$action" in
+        generate-template | search | file-search)
+            # argument required but no completions available
+            return
+            ;;
+        install-template | remove-template)
+            if [[ -e $confdir/templates ]]; then
+                COMPREPLY=($(
+                    cd "$confdir/templates"
+                    compgen -f -X "!*.template" -- "$cur"
+                ))
+                COMPREPLY=(${COMPREPLY[@]%.template})
+            fi
+            return
+            ;;
+        remove)
+            _filedir
+            COMPREPLY+=($(compgen -W 'a ap d e f k kde kdei l n t tcl x
+                xap xfce y' -- "$cur"))
+            COMPREPLY+=($(
+                cd /var/log/packages
+                compgen -f -- "$cur"
+            ))
+            return
+            ;;
+        install | reinstall | upgrade | blacklist | download)
+            _filedir
+            COMPREPLY+=($(compgen -W 'a ap d e f k kde kdei l n t tcl x
+                xap xfce y' -- "$cur"))
+            COMPREPLY+=($(cut -f 6 -d\  "${WORKDIR}/pkglist" 2>/dev/null |
+                command grep "^$cur"))
+            return
+            ;;
+        info)
+            COMPREPLY=($(cut -f 6 -d\  "${WORKDIR}/pkglist" 2>/dev/null |
+                command grep "^$cur"))
+            return
+            ;;
+        update)
+            # we should complete the same as the next `list` + "gpg"
+            COMPREPLY=($(compgen -W 'gpg' -- "$cur"))
+            ;&
+        *)
+            COMPREPLY+=($(compgen -W 'install reinstall upgrade remove
+                blacklist download update install-new upgrade-all
+                clean-system new-config check-updates help generate-template
+                install-template remove-template search file-search info' -- \
+                "$cur"))
+            return
+            ;;
+    esac
+
+} &&
+    complete -F _slackpkg slackpkg
+
+# ex: filetype=sh

slackpkg.SlackBuild

@@ -100,6 +100,10 @@ chown -R root:root $PKG/usr/man
 # Compress manual pages
 find $PKG/usr/man -type f -exec gzip -9 {} \;
 
+# Install bash-completion file
+mkdir -p $PKG/usr/share/bash-completion/completions
+cat $CWD/shell-completion/slackpkg.bash > $PKG/usr/share/bash-completion/completions/slackpkg
+
 # Update version number:
 sed -i "s/@VERSION@/$VERSION/g" $PKG/usr/sbin/slackpkg