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SubjectRe: [PATCH] checkpatch: suggest spaces around binary operators in strict mode
On 07/08/2011 07:01 PM, Joe Perches wrote:
> On Fri, 2011-07-08 at 17:41 -0400, Pavel Roskin wrote:
>> Signed-off-by: Pavel Roskin<proski@gnu.org>
>> ---
>> scripts/checkpatch.pl | 2 ++
>> 1 files changed, 2 insertions(+), 0 deletions(-)
>>
>> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
>> index b0aa2c6..9431ada 100755
>> --- a/scripts/checkpatch.pl
>> +++ b/scripts/checkpatch.pl
>> @@ -2167,6 +2167,8 @@ sub process {
>> if ($ctx =~ /Wx[^WCE]|[^WCE]xW/) {
>> ERROR("need consistent spacing around '$op' $at\n" .
>> $hereptr);
>> + } elsif ($ctx =~ /[^WCE]x[^WCE]/) {
>> + CHK("spaces suggested around '$op' $at\n" . $hereptr);
>
> Hey Pavel.
>
> This should probably not be an elsif but
> a standalone test.

Maybe. I just tried to minimize the changes. I think all of the
operators in the condition above the lines I changed need spaces around
them, so I decided to reuse the code block.

Spaces around binary operands are pretty standard. scripts/Lindent
would add them.

I understand that not everybody wants that rule enforced, so I used a
nicely worded warning and enabled it only in the strict mode. That was
done to avoid sparking a flamewar about formatting.

There are some cases when missing spaces are palatable, in particular
with "|", which is thin. So this may be OK:

(high_id << 8)|(low_id & 0xff)

But I've seen checkpatch ignore stuff like this:

ah->ah_gain.g_current-ah->ah_gain.g_f_corr

And that is just horrible on the eyes. I want checkpatch to catch that.

> Also, there's an upcoming patch in mm that
> classifies all output ERROR/WARN/CHK types.
>
> This one should be "SPACING".

OK, please keep my suggestion in mind.

--
Regards,
Pavel Roskin


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