Bash-completion is written with FHS in mind where completion scripts
all get added to /usr/share/bash-completion/completions and are picked
up by the dynamic completion loader from there---whether they are
part of bash-completion or installed by another package.

On Guix systems, we want not only to search within bash-completion's own
directory, but also in the user's profile and guix home profile, as well
as in the system profile.
This is what this patch does.


--- a/bash_completion
+++ b/bash_completion
@@ -2173,7 +2173,15 @@ complete -F _minimal ''
 
 __load_completion()
 {
-    local -a dirs=(${BASH_COMPLETION_USER_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/bash-completion}/completions)
+    local -a dirs=(
+        ${BASH_COMPLETION_USER_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/bash-completion}/completions
+        "$HOME/.guix-profile/share/bash-completion/completions"
+        "$HOME/.guix-profile/etc/bash_completion.d"
+        "$HOME/.guix-home/profile/share/bash-completion/completions"
+        "$HOME/.guix-home/profile/etc/bash_completion.d"
+        "/run/current-system/profile/share/bash-completion/completions"
+        "/run/current-system/profile/etc/bash_completion.d" )
+
     local ifs=$IFS IFS=: dir cmd="${1##*/}" compfile
     [[ -n $cmd ]] || return 1
     for dir in ${XDG_DATA_DIRS:-/usr/local/share:/usr/share}; do
         dirs+=( $dir/bash-completion/completions )
f='/guix/diff/gnu/packages/xiph.scm?id=461602d07c8da0e29bae392270f4ef3fd4f7fffb'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/xiph.scm'>
<input type='hidden' name='id' value='461602d07c8da0e29bae392270f4ef3fd4f7fffb'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=461602d07c8da0e29bae392270f4ef3fd4f7fffb'>root</a>/<a href='/guix/log/gnu?id=461602d07c8da0e29bae392270f4ef3fd4f7fffb'>gnu</a>/<a href='/guix/log/gnu/packages?id=461602d07c8da0e29bae392270f4ef3fd4f7fffb'>packages</a>/<a href='/guix/log/gnu/packages/xiph.scm?id=461602d07c8da0e29bae392270f4ef3fd4f7fffb'>xiph.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/xiph.scm?id=461602d07c8da0e29bae392270f4ef3fd4f7fffb&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-04-14 17:15:08 -0400'>2023-04-14</span></td><td><a href='/guix/commit/gnu/packages/xiph.scm?id=3bacd3c76a58ebe70f98be654f09cbd4166093ab'>Merge branch 'master' into core-updates.</a><span class='msg-avail'>...<span class='msg-tooltip'>Conflicts:
	gnu/local.mk
	gnu/packages/build-tools.scm
	gnu/packages/certs.scm
	gnu/packages/check.scm
	gnu/packages/compression.scm
	gnu/packages/cups.scm
	gnu/packages/fontutils.scm
	gnu/packages/gnuzilla.scm
	gnu/packages/guile.scm
	gnu/packages/ibus.scm
	gnu/packages/image-processing.scm
	gnu/packages/linux.scm
	gnu/packages/music.scm
	gnu/packages/nss.scm
	gnu/packages/pdf.scm
	gnu/packages/python-xyz.scm
	gnu/packages/qt.scm
	gnu/packages/ruby.scm
	gnu/packages/shells.scm
	gnu/packages/tex.scm
	gnu/packages/video.scm
	gnu/packages/vulkan.scm
	gnu/packages/web.scm
	gnu/packages/webkit.scm
	gnu/packages/wm.scm
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2023-03-24 21:40:00 -0400'>2023-03-24</span></td><td><a href='/guix/commit/gnu/packages/xiph.scm?id=c1a2e26b28ab2a2b2cb0b0c6ca46da93efe97948'>gnu: speexdsp: Update to 1.2.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/xiph.scm (speexdsp): Update to 1.2.1.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2023-02-07 09:14:13 -0500'>2023-02-07</span></td><td><a href='/guix/commit/gnu/packages/xiph.scm?id=31dac1f0fb3d85dd4d3e57a878b87216d4ca3e40'>gnu: speex: Update to 1.2.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/xiph.scm (speex): Update to 1.2.1.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-08-27 17:10:55 +0200'>2022-08-27</span></td><td><a href='/guix/commit/gnu/packages/xiph.scm?id=ad384816fe260be98bc53701d9d761197ef162fc'>Merge branch 'staging' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-08-14 02:00:01 +0200'>2022-08-14</span></td><td><a href='/guix/commit/gnu/packages/xiph.scm?id=d248d8b5198076e47915f83acdc21eb76dcbdb62'>gnu: rnnoise: Remove input labels.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/xiph.scm (rnnoise)[native-inputs]:
Remove input labels.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2022-08-14 02:00:01 +0200'>2022-08-14</span></td><td><a href='/guix/commit/gnu/packages/xiph.scm?id=2388d2d3f7e43d73b0a8a6c1282be16bafb918a7'>gnu: rnnoise: Unhide and rename variable.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/xiph.scm (xiph-rnnoise): Rename to…
(rnnoise): …this.  Adjust all users.
[properties]: Remove HIDDEN? property as it is no longer ambiguous.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>