bash-completion: redirect introspection errors to null

If completion is attempted on an invalid path, busctl might respond with an error.
This shouldn't be seen, introspection is supposed to just fail silently.

diff --git a/shell-completion/bash/busctl b/shell-completion/bash/busctl
index c357c25bc32d87b1f80eac36eb3085e5c26d34ce..1ac8ac7ecae1785616aac5e5cf3eef851585137c 100644 (file)
--- a/shell-completion/bash/busctl
+++ b/shell-completion/bash/busctl
@@ -28,20 +28,23 @@ __contains_word () {
 
 __get_machines() {
         local a b
-        machinectl list --no-legend --no-pager | { while read a b; do echo " $a"; done; };
+        machinectl list --no-legend --no-pager 2>/dev/null |
+                { while read a b; do echo " $a"; done; };
 }
 
 __get_busnames() {
         local mode=$1
         local a b
-        busctl $mode list --no-legend --no-pager | { while read a b; do echo " $a"; done; };
+        busctl $mode list --no-legend --no-pager 2>/dev/null |
+                { while read a b; do echo " $a"; done; };
 }
 
 __get_objects() {
         local mode=$1
         local busname=$2
         local a b
-        busctl $mode tree --list --no-legend --no-pager $busname | { while read a b; do echo " $a"; done; };
+        busctl $mode tree --list --no-legend --no-pager $busname 2>/dev/null |
+                { while read a b; do echo " $a"; done; };
 }
 
 __get_interfaces() {
@@ -49,7 +52,8 @@ __get_interfaces() {
         local busname=$2
         local path=$3
         local a b c
-        busctl $mode introspect --list --no-legend --no-pager $busname $path | { while read a b c; do [[ "$b" == "interface" ]] && echo " $a"; done; };
+        busctl $mode introspect --list --no-legend --no-pager $busname $path 2>/dev/null |
+                { while read a b c; do [[ "$b" == "interface" ]] && echo " $a"; done; };
 }
 
 __get_members() {
@@ -60,7 +64,9 @@ __get_members() {
         local type=$5
         local flags=$6
         local a b c d e
-        busctl $mode introspect --list --no-legend --no-pager $busname $path $interface | sed -e 's/^\.//' | { while read a b c d e; do [[ "$b" == "$type" && ( -z $flags || "$e" == "$flags" ) ]] && echo " $a"; done; };
+        busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
+                sed -e 's/^\.//' |
+                { while read a b c d e; do [[ "$b" == "$type" && ( -z $flags || "$e" == "$flags" ) ]] && echo " $a"; done; };
 }
 
 __get_signature() {
@@ -70,7 +76,8 @@ __get_signature() {
         local interface=$4
         local member=$5
         local a b c d
-        busctl $mode introspect --list --no-legend --no-pager $busname $path $interface | sed -e 's/^\.//' | { while read a b c d; do [[ "$a" == "$member" && "$c" != '-' ]] && echo " \"$c\""; done; };
+        busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
+                sed -e 's/^\.//' | { while read a b c d; do [[ "$a" == "$member" && "$c" != '-' ]] && echo " \"$c\""; done; };
 }
 
 _busctl() {