linux-kernel - [tip:perf/core] perf tools: Fix the bash completion for listing subcommands of perf

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Date:	Sun, 22 Mar 2015 03:10:41 -0700
From:	tip-bot for Yunlong Song <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, wangnan0@...wei.com, mingo@...nel.org,
	paulus@...ba.org, hpa@...or.com, a.p.zijlstra@...llo.nl,
	acme@...hat.com, yunlong.song@...wei.com,
	linux-kernel@...r.kernel.org
Subject: [tip:perf/core] perf tools:
  Fix the bash completion for listing subcommands of perf

Commit-ID:  e003ce54d2ccbb8da0fd4f421e1cc9686ef25add
Gitweb:     http://git.kernel.org/tip/e003ce54d2ccbb8da0fd4f421e1cc9686ef25add
Author:     Yunlong Song <yunlong.song@...wei.com>
AuthorDate: Wed, 18 Mar 2015 21:35:51 +0800
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 19 Mar 2015 13:49:38 -0300

perf tools: Fix the bash completion for listing subcommands of perf

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@...wei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/1426685758-25488-7-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 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
--
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