[PATCH 06/13] perf tools: Fix the bash completion for listing subcommands of perf

[Yunlong Song]

The bash completion does not support listing subcommands for 'perf
--<long option> <TAB>'.

Example:

Before this patch:

 $ perf --debug <TAB>
 $

As shown above, the subcommands of perf does not come out.

After this patch:

 $ perf --debug <TAB>
 annotate       buildid-cache  data           evlist         inject
 kvm            lock           probe          report         script
 test           top            version
 bench          buildid-list   diff           help           kmem
 list           mem            record         sched          stat
 timechart      trace

As shown above, the subcommands of perf can come out now.

Signed-off-by: Yunlong Song <yunlong.song@xxxxxxxxxx>
---
 tools/perf/perf-completion.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/perf-completion.sh b/tools/perf/perf-completion.sh
index 3e25d3e..7b98ae4 100644
--- a/tools/perf/perf-completion.sh
+++ b/tools/perf/perf-completion.sh
@@ -130,7 +130,7 @@ __perf_main ()
 	# Skip options backward and find the last perf command
 	__perf_prev_skip_opts
 	# List perf subcommands or long options
-	if [ $cword -eq 1 ]; then
+	if [ -z $prev_skip_opts ]; then
 		if [[ $cur == --* ]]; then
 			cmds=$($cmd --list-opts)
 		else
-- 
1.8.5.2

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