Re: [Xen-devel] [PATCH] cmdline: treat hyphens and underscores the same

[Jan Beulich <jbeulich@xxxxxxxx>]

On 06.12.2019 15:46, Julien Grall wrote:
> On 05/12/2019 16:50, Jan Beulich wrote:
>> On 05.12.2019 17:27, Julien Grall wrote:
>>> On 05/12/2019 15:33, Jan Beulich wrote:
>>>> +/*
>>>> + * String comparison functions mostly matching strcmp() / strncmp(),
>>>> + * except that they treat '-' and '_' as matching one another.
>>>> + */
>>>> +static int _strcmp(const char *s1, const char *s2)
>>>
>>> I thought we were trying to avoid new function name with leading _?
>>
>> We're trying to avoid new name space violations. Such are
>> - identifiers starting with two underscores,
>> - identifiers starting with an underscore and an upper case letter,
>> - identifiers of non-static symbols starting with an underscore.
> 
> I am not sure to understand why non-static symbols only. This would 
> prevent you to use the the non-static symbol if you happen to re-use the 
> same name.

I'm afraid I don't understand. Anyway - what I've listed above is
what the language standard mandates.

> Anyway, how about calling it cmdline_strncmp()? This would be easier to 
> spot misuse on review (i.e using strncmp() rather than _strncmp()).

We already have cmdline_strcmp(), or else I would indeed have used
this prefix. No prefix (other than the lone underscore) seemed the
next best option.

Jan

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