linux-kernel - Re: [PATCH] checkpatch: add help info if no filenames are given

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Date:   Tue, 18 May 2021 10:38:03 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Joe Perches <joe@...ches.com>, Andy Whitcroft <apw@...onical.com>,
        Dwaipayan Ray <dwaipayanray1@...il.com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] checkpatch: add help info if no filenames are given

On 05/18/2021 10:22 AM, Joe Perches wrote:
> On Tue, 2021-05-18 at 09:25 +0800, Tiezhu Yang wrote:
>> After commit 45107ff6d526 ("checkpatch: if no filenames then read stdin"),
>> if no filenames are given, it will read patch from stdin rather than exit
>> directly. This means the script waits for input indefinitely, which
>> confuses new checkpatch users at first.
>>
>> Add some help info on this behaviour of checkpatch to lower the confusion.
>>
>> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
>> ---
>>   scripts/checkpatch.pl | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
>> index 23697a6..825eb00 100755
>> --- a/scripts/checkpatch.pl
>> +++ b/scripts/checkpatch.pl
>> @@ -80,6 +80,8 @@ sub help {
>>   Usage: $P [OPTION]... [FILE]...
>>   Version: $V
>>   
>>
>> +When FILE is -, or absent, checkpatch reads from standard input.
>> +
>>   Options:
>>     -q, --quiet                quiet
>>     -v, --verbose              verbose mode
>> @@ -138,8 +140,6 @@ Options:
>>     --kconfig-prefix=WORD      use WORD as a prefix for Kconfig symbols (default
>>                                ${CONFIG_})
>>     -h, --help, --version      display this help and exit
>> -
>> -When FILE is - read standard input.
> This line is redundant/unnecessary.

This commit adds
"When FILE is -, or absent, checkpatch reads from standard input."
and delete
"When FILE is - read standard input."

>
>>   EOM
>>   
>>
>>   	exit($exitcode);