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 in the system profile.
This is what this patch does.


--- a/bash_completion	2016-08-03 10:23:02.356782287 +0200
+++ b/bash_completion	2016-08-03 10:27:50.120140403 +0200
@@ -1960,7 +1960,13 @@
 
 __load_completion()
 {
-    local -a dirs=( ${BASH_COMPLETION_USER_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/bash-completion}/completions )
+    local -a dirs=(
+        "$HOME/.guix-profile/share/bash-completion/completions/$base"
+        "$HOME/.guix-profile/etc/bash_completion.d/$base"
+        "/run/current-system/profile/share/bash-completion/completions/$base"
+        "/run/current-system/profile/etc/bash_completion.d/$base"
+        ${BASH_COMPLETION_USER_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/bash-completion}/completions )
+
     local OIFS=$IFS IFS=: dir cmd="$1" compfile
     for dir in ${XDG_DATA_DIRS:-/usr/local/share:/usr/share}; do
         dirs+=( $dir/bash-completion/completions )
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<div class='path'>path: <a href='/guix/log/?id=526171269d70f5c28820e2ac54c082def7068edd'>root</a>/<a href='/guix/log/tests?id=526171269d70f5c28820e2ac54c082def7068edd'>tests</a>/<a href='/guix/log/tests/utils.scm?id=526171269d70f5c28820e2ac54c082def7068edd'>utils.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/tests/utils.scm?id=526171269d70f5c28820e2ac54c082def7068edd&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-02-03 12:41:28 +0100'>2021-02-03</span></td><td><a href='/guix/commit/tests/utils.scm?id=9505b54a4f9f0265c9d8be53763f0c59d6f62a44'>utils: Add string distance.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/utils.scm (string-distance): New procedure.
(string-closest): New procedure.
* tests/utils.scm ("string-distance", "string-closest"): New tests.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>zimoun</td></tr>
<tr><td><span title='2021-02-01 17:32:34 +0100'>2021-02-01</span></td><td><a href='/guix/commit/tests/utils.scm?id=579506e272cf68649ec68ad8a976a17426ea630c'>utils: Add 'version-unique-prefix'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/utils.scm (version-unique-prefix): New procedure.
* tests/utils.scm ("version-unique-prefix"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>