perf completion: Introduce a layer of indirection

Define the variables cur, words, cword, and prev outside the main
completion function so that we have a chance to override it when we
introduce zsh support.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1384704807-15779-2-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 11 insertions, 6 deletions

diff --git a/tools/perf/bash_completion b/tools/perf/bash_completion
index 62e157db2e2b..3efdc84f112c 100644
--- a/tools/perf/bash_completion
+++ b/tools/perf/bash_completion
@@ -89,15 +89,12 @@ __ltrim_colon_completions()
         fi
 }
 
-type perf &>/dev/null &&
-_perf()
+__perf_main ()
 {
-        local cur words cword prev cmd
-
-        COMPREPLY=()
-        _get_comp_words_by_ref -n =: cur words cword prev
+        local cmd
 
         cmd=${words[0]}
+        COMPREPLY=()
 
         # List perf subcommands or long options
         if [ $cword -eq 1 ]; then
@@ -120,6 +117,14 @@ _perf()
                 opts=$($cmd $subcmd --list-opts)
                 COMPREPLY=( $( compgen -W '$opts' -- "$cur" ) )
         fi
+}
+
+type perf &>/dev/null &&
+_perf()
+{
+        local cur words cword prev
+        _get_comp_words_by_ref -n =: cur words cword prev
+        __perf_main
 } &&
 
 complete -o bashdefault -o default -o nospace -F _perf perf 2>/dev/null \