strstr(3): add special case for empty needle, as in wcsstr(3)

strstr(3): add special case for empty needle, as in wcsstr(3)

[Stefan Kanthak]

Hi,

in the section return value, wcsstr(3) provides the following note
for the special case of an empty needle:

<https://man7.org/linux/man-pages/man3/wcsstr.3.html#RETURN_VALUE>

|  Note the special case: If needle is the empty wide-character
|  string, the return value is always haystack itself.

The same note is but missing in strstr(3) and should be added there:

<https://man7.org/linux/man-pages/man3/strstr.3.html#RETURN_VALUE>

|  Note the special case: If needle is the empty string, the return
|  value is always haystack itself.

regards
Stefan

Re: strstr(3): add special case for empty needle, as in wcsstr(3)

[Alejandro Colomar (man-pages)]

Hi Stefan,

On 7/12/21 11:20 AM, Stefan Kanthak wrote:
> Hi,
> 
> in the section return value, wcsstr(3) provides the following note
> for the special case of an empty needle:
> 
> <https://man7.org/linux/man-pages/man3/wcsstr.3.html#RETURN_VALUE>
> 
> |  Note the special case: If needle is the empty wide-character
> |  string, the return value is always haystack itself.
> 
> The same note is but missing in strstr(3) and should be added there:
> 
> <https://man7.org/linux/man-pages/man3/strstr.3.html#RETURN_VALUE>
> 
> |  Note the special case: If needle is the empty string, the return
> |  value is always haystack itself.

Thanks, I applied a patch with that addition.  What a coincidence! I was 
looking for that special case this morning, and had to guess it out 
considering it as a normal case :)

Regards,

Alex

-- 
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/