perf completion: Use more comp words

The completion words $words and $cword are available, so we might as
well use them instead of directly accessing COMP_WORDS.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1372941691-14684-8-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/tools/perf/bash_completion b/tools/perf/bash_completion
index ee9c6d85f2c9..62e157db2e2b 100644
--- a/tools/perf/bash_completion
+++ b/tools/perf/bash_completion
@@ -92,15 +92,15 @@ __ltrim_colon_completions()
 type perf &>/dev/null &&
 _perf()
 {
-        local cur prev cmd
+        local cur words cword prev cmd
 
         COMPREPLY=()
-        _get_comp_words_by_ref -n : cur prev
+        _get_comp_words_by_ref -n =: cur words cword prev
 
-        cmd=${COMP_WORDS[0]}
+        cmd=${words[0]}
 
         # List perf subcommands or long options
-        if [ $COMP_CWORD -eq 1 ]; then
+        if [ $cword -eq 1 ]; then
                 if [[ $cur == --* ]]; then
                         COMPREPLY=( $( compgen -W '--help --version \
                         --exec-path --html-path --paginate --no-pager \
@@ -110,13 +110,13 @@ _perf()
                         COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
                 fi
         # List possible events for -e option
-        elif [[ $prev == "-e" && "${COMP_WORDS[1]}" == @(record|stat|top) ]]; then
+        elif [[ $prev == "-e" && "${words[1]}" == @(record|stat|top) ]]; then
                 evts=$($cmd list --raw-dump)
                 COMPREPLY=( $( compgen -W '$evts' -- "$cur" ) )
                 __ltrim_colon_completions $cur
         # List long option names
         elif [[ $cur == --* ]];  then
-                subcmd=${COMP_WORDS[1]}
+                subcmd=${words[1]}
                 opts=$($cmd $subcmd --list-opts)
                 COMPREPLY=( $( compgen -W '$opts' -- "$cur" ) )
         fi